CN115012989A - Tunnel lining trolley and vibrating system thereof - Google Patents
Tunnel lining trolley and vibrating system thereof Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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Abstract
Description
技术领域technical field
本发明涉及隧道施工技术领域,具体地说,是涉及一种用于隧道衬砌台车的振捣系统以及设置有该振捣系统的隧道衬砌台车。The invention relates to the technical field of tunnel construction, in particular to a vibrating system for a tunnel lining trolley and a tunnel lining trolley equipped with the vibrating system.
背景技术Background technique
随着我国铁路、公路建设的高速发展,隧道工程建设的数量也越来越多,因此,对隧道的衬砌质量及标准化施工要求不断提高。With the rapid development of railway and highway construction in my country, the number of tunnel projects is also increasing. Therefore, the requirements for tunnel lining quality and standardized construction are constantly improving.
在传统的隧道衬砌工艺中,进行二衬混凝土浇筑前,先将隧道衬砌台车移动至指定位置,并使隧道衬砌台车的钢模板与上板混凝土搭接;接着进行二衬混凝土浇筑,浇筑时,采用地泵将混凝土泵送至隧道衬砌台车的进料口,并在每个进料口使用手持式振捣棒进行振捣,当浇筑至拱顶时,采用电动附着式振捣器进行振捣;但是,由于二衬拱顶钢筋密集,使得拱顶混凝土无法进行人工振捣,且电动式振捣器又存在频率不足、振捣半径小等缺点,导致拱顶混凝土难以密实、饱满,因此使得隧道衬砌拱顶混凝土出现空洞、混凝土强度不足、混凝土强度不均匀等质量问题,而这些质量问题会给后期隧道运行带来极大的安全风险,因此,传统的隧道衬砌工艺已无法满足施工需求。In the traditional tunnel lining process, before the secondary lining concrete is poured, the tunnel lining trolley is moved to the designated position, and the steel formwork of the tunnel lining trolley is overlapped with the upper slab concrete; When pouring the concrete to the feed port of the tunnel lining trolley, use the ground pump to pump the concrete, and use a hand-held vibrator at each feed port to vibrate. When pouring to the vault, use an electric attached vibrator. Vibration; however, due to the dense reinforcement of the secondary lining vault, the vault concrete cannot be vibrated manually, and the electric vibrator has shortcomings such as insufficient frequency and small vibration radius, which makes the vault concrete difficult to compact and full. Therefore, quality problems such as voids, insufficient concrete strength, and uneven concrete strength of the tunnel lining vault concrete are caused, and these quality problems will bring great safety risks to the later tunnel operation. Therefore, the traditional tunnel lining technology can no longer meet the requirements. construction needs.
针对上述问题,现有的一种振捣系统,如图1所示,其包括钢模板11、多个自动插入式振捣器12和多个气动振捣器13,该振捣系统通过自动插入式振捣器12将高频振捣棒插入拱顶混凝土以对拱顶混凝土进行插入式自动振捣,从而解决拱顶二衬脱空及混凝土不密实的问题;此外,气动振捣器13具有振捣频率高、振捣半径大等优点,使其能够对深厚混凝土进行振捣,避免深厚混凝土振捣不到位、混凝土不密实。然而,该振捣系统存在以下缺点:In view of the above problems, an existing vibrating system, as shown in FIG. 1, includes a
第一,多个气动振捣器13与多个边墙进料口111之间的相对位置分布不合理,使得多个气动振捣器13对边墙及拱部位置的混凝土的振捣效果相对较差。例如,靠近钢模板11单侧底部的第一排气动振捣器13设置位置过高,即单侧第一排气动振捣器13与矮边墙顶部(即仰拱与二衬之间的施工缝)之间的距离过大,使得仰拱与二衬之间的施工缝处于气动振捣器13的最大振捣半径边缘,因此对仰拱与二衬之间的施工缝处的混凝土振捣效果差,导致仰拱与二衬之间的施工缝处混凝土容易出现病害。又例如,在钢模板的一侧上,由于相邻两排边墙进料口111的环向间距较大,且部分相邻的两排边墙进料口111之间没有设置相应的气动振捣器13,使得该相邻的两排边墙进料口111的区域处于气动振捣器13的最大振捣半径边缘,因此,该相邻的两排边墙进料口111的区域内的混凝土受振捣效果较差,密实度较低且容易出现空洞。First, the relative position distribution between the plurality of
第二,位于钢模板11拱顶处的自动插入式振捣器13不在模板中线14上,使得该部分的自动插入式振捣器13与对称分布于模板中线14两侧的拱部位置的其他自动插入式振捣13进行共同作业时,处于拱顶处的自动插入式振捣器13会或多或少的影响模板中线14两侧处的混凝土分布均匀程度及密实度,从而导致拱顶处的混凝土容易出现混凝土强度不均匀的问题。Second, the automatic plug-in
第三,沿钢模板11的长度方向(平行于模板中线14的方向),钢模板11的两端部112处的振捣器(包括自动插入式振捣器12和气动振捣器13)的布局不合理,对钢模板11端部处的混凝土振捣效果差;而由于浇筑出的二衬需要分别与上一板二衬和下一板二衬衔接,因此,对衔接处(即环向施工缝处)的混凝土的振捣就显得尤为重要,以避免出现混凝土病害。Thirdly, along the length direction of the steel formwork 11 (the direction parallel to the formwork center line 14 ), the vibrators at the two
发明内容SUMMARY OF THE INVENTION
为了解决上述问题,本发明的主要目的是提供一种提高二衬混凝土的整体浇筑质量,防止拱顶混凝土脱空,保证混凝土强度内外基本一致,且强度离散值小的振捣系统。In order to solve the above problems, the main purpose of the present invention is to provide a vibrating system that improves the overall pouring quality of the secondary lining concrete, prevents the dome concrete from emptying, and ensures that the concrete strength is basically consistent inside and outside, and the strength discrete value is small.
本发明的另一目的是提供一种设置有上述振捣系统的隧道衬砌台车。Another object of the present invention is to provide a tunnel lining trolley provided with the above-mentioned vibrating system.
为了实现本发明的主要目的,本发明提供一种振捣系统,包括钢模板,钢模板具有两个关于对称面呈对称设置的施工区,钢模板的高度方向和轴心均在对称面上,其中,每个施工区上均设置有多层浇筑窗、多组第一振捣组、至少一组第二振捣组、第三振捣组、第四振捣组、第五振捣组和第六振捣组;多层浇筑窗沿钢模板的环向分布,浇筑窗包括多个沿第一方向分布的入料口,第一方向平行于轴心;施工区具有边拱部、第一端部和第二端部,沿第一方向,边拱部位于第一端部和第二端部之间,第一振捣组和第二振捣组均设置在边拱部,多组第一振捣组沿环向与多层浇筑窗相间设置,第一振捣组包括多个沿第一方向分布的第一气动振捣器,第二振捣组包括多个沿第一方向分布的第二气动振捣器;第三振捣组和第五振捣组均设置在第一端部上,第三振捣组包括多个沿环向分布的第三气动振捣器,第五振捣组包括至少一个第一插入式振捣器;第四振捣组和第六振捣组均设置在第二端部上,第四振捣组包括多个沿环向分布的第四气动振捣器,第六振捣组包括至少一个第二插入式振捣器;在高度方向上,最下方一组第一振捣组的高度小于最底层的浇筑窗的高度,第二振捣组位于最顶层的浇筑窗的上方,第五振捣组位于第三振捣组的上方,第六振捣组位于第四振捣组的上方;在环向上,相邻两个第一气动振捣器错开设置,相邻的一个第一气动振捣器与一个第二气动振捣器错开设置;钢模板的拱顶设置有多个沿第一方向分布的第三插入式振捣器和多个沿第一方向分布的灌注孔,多个第三插入式振捣器和多个灌注孔均位于对称面上。In order to achieve the main purpose of the present invention, the present invention provides a vibrating system, including a steel formwork, the steel formwork has two construction areas symmetrically arranged with respect to the symmetry plane, and the height direction and the axis of the steel formwork are on the symmetry plane, Wherein, each construction area is provided with multi-layer pouring windows, multiple groups of the first vibrating group, at least one group of the second vibrating group, the third vibrating group, the fourth vibrating group, the fifth vibrating group and the The sixth vibrating group; the multi-layer pouring windows are distributed along the circumferential direction of the steel formwork, and the pouring windows include a plurality of feeding ports distributed along the first direction, and the first direction is parallel to the axis; the construction area has a side arch, a first end and the second end portion, along the first direction, the side arch portion is located between the first end portion and the second end portion, the first vibrating group and the second vibrating group are both arranged on the side arch portion, and multiple groups of first The vibrating groups are arranged alternately with the multi-layer pouring windows in the circumferential direction, the first vibrating group includes a plurality of first pneumatic vibrators distributed along the first direction, and the second vibrating group includes a plurality of first pneumatic vibrators distributed along the first direction. Two pneumatic vibrators; the third vibrating group and the fifth vibrating group are both arranged on the first end, the third vibrating group includes a plurality of third pneumatic vibrators distributed along the circumferential direction, and the fifth vibrating group is The group includes at least one first plug-in vibrator; the fourth vibrator group and the sixth vibrator group are both arranged on the second end, and the fourth vibrator group includes a plurality of fourth pneumatic vibrators distributed along the circumferential direction The sixth vibrating group includes at least one second plug-in vibrator; in the height direction, the height of the first vibrating group in the lowermost group is less than the height of the pouring window at the bottom layer, and the second vibrating group is located at the lowest level. Above the pouring window on the top floor, the fifth vibrating group is located above the third vibrating group, and the sixth vibrating group is located above the fourth vibrating group; in the ring direction, two adjacent first pneumatic vibrators are staggered Arrangement, an adjacent first pneumatic vibrator and a second pneumatic vibrator are staggered; the dome of the steel formwork is provided with a plurality of third plug-in vibrators distributed along the first direction and a plurality of third plug-in vibrators along the first direction. The pouring holes distributed in one direction, the plurality of third insertion-type vibrators and the plurality of pouring holes are all located on the symmetry plane.
由上可见,通过对振捣系统的设计,能够更好的提升对钢模板的边墙及拱部区域、拱顶区域、两端部区域的混凝土的振捣效果,以提高混凝土的密实度,防止混凝土出现空洞。其中,通过对第一振捣组和浇筑窗的相对位置设计,既保证了仰拱与二衬之间的施工缝处的混凝土能够受到全面、充分的振捣,又保证相邻两层浇筑窗之间的混凝土能够受到全面、充分的振捣,从而使得边墙处混凝土能够更加的密实,减少边墙处混凝土的缺陷病害;通过对第二振捣组的位置设置,使得第二振捣组能够对拱部处的混凝土进行全面、充分的振捣,以保证拱部处的混凝土能够密实无缺陷病害,同时,第二振捣组还能够配合位于拱顶处的多个第三插入式振捣器对拱顶处的混凝土进行全面、充分的振捣,以保证拱顶处混凝土分布均匀、密实且强度均匀,并防止由于振捣不到位而导致出现混凝土不密实、蜂窝麻面、拱顶脱空等问题;通过对第三振捣组和第四振捣组的设置,使得第三振捣组和第四振捣组能够对钢模板端部的边墙部分的混凝土进行全面、充分的振捣,以保证环向施工缝处混凝土的浇筑质量,从而保证相邻两板二衬之间的衔接质量;通过对第五振捣组和第六振捣组的设置,使得第一插入式振捣器和第二插入式振捣器能够对钢模板端部的拱顶部分的混凝土进行全面、充分的振捣,以避免混凝土灌入拱顶过程中因局部混凝土聚集而造成小范围内空洞或不密实,从而保证环向施工缝处混凝土的浇筑质量,提高相邻两板二衬的衔接质量。It can be seen from the above that through the design of the vibrating system, the vibrating effect of the concrete in the side wall and the arch area, the vault area and the two end areas of the steel formwork can be better improved, so as to improve the compactness of the concrete. Prevents voids in concrete. Wherein, by designing the relative position of the first vibrating group and the pouring window, it is ensured that the concrete at the construction joint between the inverted arch and the second lining can be fully and fully vibrated, and the adjacent two-story pouring windows are guaranteed. The concrete in between can be fully and fully vibrated, so that the concrete at the side wall can be more dense, and the defects and diseases of the concrete at the side wall can be reduced; by setting the position of the second vibrating group, the second vibrating group can be The concrete at the arch can be fully and fully vibrated to ensure that the concrete at the arch can be dense and free of defects. The tamper vibrates the concrete at the top of the vault comprehensively and fully to ensure that the concrete at the top of the vault is evenly distributed, dense and even in strength, and prevents the occurrence of uncompacted concrete, honeycomb surface, and vault due to insufficient vibration. Problems such as voiding; through the setting of the third and fourth vibrating groups, the third and fourth vibrating groups can comprehensively and fully carry out the concrete of the side wall part at the end of the steel formwork. Vibration to ensure the pouring quality of the concrete at the circumferential construction joint, so as to ensure the connection quality between the two adjacent plates and the second lining; by setting the fifth and sixth vibrating groups, the first plug-in type The vibrator and the second plug-in vibrator can fully and fully vibrate the concrete of the vault at the end of the steel formwork, so as to avoid small-scale voids caused by local concrete accumulation during the process of pouring concrete into the vault Or not dense, so as to ensure the pouring quality of the concrete at the circumferential construction joint and improve the connection quality of the adjacent two plates and two linings.
一个优选的方案是,在高度方向上,第三气动振捣器与矮边墙之间的最小距离介于0.8米至1米之间,第四气动振捣器与矮边墙之间的最小距离介于0.8米至1米之间,第一气动振捣器与矮边墙之间的最小距离介于0.8米至1米之间。A preferred solution is that in the height direction, the minimum distance between the third pneumatic vibrator and the short side wall is between 0.8 m and 1 m, and the minimum distance between the fourth pneumatic vibrator and the short side wall is between 0.8 m and 1 m. The distance is between 0.8m and 1m, and the minimum distance between the first pneumatic vibrator and the low side wall is between 0.8m and 1m.
由上可见,上述设计使得第一气动振捣器、第三气动振捣器、第四气动振捣器能够相互配合以对仰拱与二衬的施工缝处的混凝土进行充分、有效且全面的振捣,进而保证钢模板的边墙、端部边墙区域的混凝土的密实度,提升混凝土的浇筑质量。As can be seen from the above, the above-mentioned design enables the first pneumatic vibrator, the third pneumatic vibrator, the fourth pneumatic vibrator to cooperate with each other to fully, effectively and comprehensively carry out the concrete at the construction joint of the inverted arch and the second lining. Vibration, thereby ensuring the compactness of the concrete in the side wall and end side wall area of the steel formwork, and improving the pouring quality of the concrete.
进一步的方案是,第一气动振捣器的振捣半径介于1.8米至2.5米之间;第二气动振捣器的振捣半径介于1.8米至2.5米之间;第三气动振捣器的振捣半径介于1.8米至2.5米之间;第四气动振捣器的振捣半径介于1.8米至2.5米之间;第一插入式振捣器的振捣半径介于1.2米至1.8米之间;第二插入式振捣器的振捣半径介于1.2米至1.8米之间;第三插入式振捣器的振捣半径介于1.2米至1.8米之间;第一气动振捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第二气动振捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第三气动振捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第四振气动捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第一插入式振捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第二插入式振捣器的振捣半径与临近的其他振捣器的振捣半径咬合,第三插入式振捣器的振捣半径与临近的其他振捣器的振捣半径咬合;在第一方向上,相邻两个入料口之间的距离介于1.8米至2.5米之间,相邻两个灌注孔之间的距离介于1.2米至1.8米之间。A further solution is that the vibrating radius of the first pneumatic vibrator is between 1.8 meters and 2.5 meters; the vibration radius of the second pneumatic vibrator is between 1.8 meters and 2.5 meters; the third pneumatic vibrator is between 1.8 meters and 2.5 meters. The vibration radius of the vibrator is between 1.8m and 2.5m; the vibration radius of the fourth pneumatic vibrator is between 1.8m and 2.5m; the vibration radius of the first plug-in vibrator is between 1.2m between 1.8 m and 1.8 m; the second plug-in vibrator has a vibrating radius between 1.2 m and 1.8 m; the third plug-in vibrator has a vibrating radius between 1.2 m and 1.8 m; the first The vibration radius of the pneumatic vibrator meshes with the vibration radius of other adjacent vibrators, the vibration radius of the second pneumatic vibrator meshes with the vibration radius of other adjacent vibrators, and the third pneumatic vibrator meshes with the vibration radius of other adjacent vibrators. The vibrating radius of the vibrator is meshed with the vibrating radius of other adjacent vibrators, the vibrating radius of the fourth vibrator is meshed with the vibrating radius of other adjacent vibrators, and the vibrating radius of the first plug-in vibrator is The radius is meshed with the vibration radius of other adjacent vibrators, the vibration radius of the second plug-in vibrator is meshed with the vibration radius of other adjacent vibrators, and the vibration radius of the third plug-in vibrator is The vibrating radius of other adjacent vibrators is engaged; in the first direction, the distance between two adjacent feeding ports is between 1.8 meters and 2.5 meters, and the distance between two adjacent filling holes is between 1.8 and 2.5 meters. between 1.2 meters and 1.8 meters.
由上可见,上述设计使得第一振捣组、第二振捣组、第三振捣组、第四振捣组、第五振捣组、第六振捣组及多个第三插入式振捣器的振捣范围能够覆盖整个二衬混凝土,从而保证二衬混凝土的整体质量。As can be seen from the above, the above-mentioned design makes the first vibrating group, the second vibrating group, the third vibrating group, the fourth vibrating group, the fifth vibrating group, the sixth vibrating group and a plurality of third insertion vibrators. The vibrating range of the tamper can cover the entire secondary lining concrete, thereby ensuring the overall quality of the secondary lining concrete.
另一个优选的方案是,每个施工区均设置有至少一个手持插入式振捣棒。Another preferred solution is that each construction area is provided with at least one hand-held plug-in vibrator.
由上可见,通过设置手持插入式振捣棒,使得在向每个入料口浇筑混凝土时,施工人员能够在混凝土浇筑过程中对混凝土进行初步振捣,以使得注入的混凝土能够初步密实,同时,手持插入式振捣棒的设置能够在混凝土浇筑过程中,施工人员能够通过手持插入式振捣棒控制中埋止水带保持顺直,使中埋止水带不被挤压变形以及防止中埋止水带倾倒。It can be seen from the above that by setting the hand-held plug-in vibrator, when pouring concrete into each feeding port, the construction personnel can initially vibrate the concrete during the concrete pouring process, so that the injected concrete can be initially compacted and at the same time. , The setting of the hand-held plug-in vibrator can control the middle-buried waterstop to keep straight during the concrete pouring process, so that the middle-buried waterstop is not squeezed and deformed and prevents the middle-buried waterstop from being squeezed and deformed. Buried waterstop dumped.
进一步的方案是,在环向上,位于相邻两层浇筑窗之间的第一振捣组靠近该两组相邻的浇筑窗中高度低的一层浇筑窗设置。A further solution is that, in the circumferential direction, the first vibrating group located between two adjacent layers of pouring windows is arranged close to the first floor pouring window with a lower height among the two groups of adjacent pouring windows.
由上可见,上述设计能够保证每个入料口附近的混凝土受到更好的振捣,以对手持插入式振捣器的振捣盲区进行填补,从而提高整体二衬混凝土的浇筑质量。It can be seen from the above that the above design can ensure that the concrete near each feeding port is better vibrated, so as to fill the vibration blind area of the hand-held plug-in vibrator, thereby improving the pouring quality of the overall secondary lining concrete.
更进一步的方案是,沿第一方向,钢模板的长度介于10米至14米之间。A further solution is that the length of the steel formwork is between 10 and 14 meters in the first direction.
由上可见,通过对钢模板的长度设计,使得施工出的二衬长度适中且能够符合规范要求,同时能够保证二衬混凝土的整体浇筑质量。It can be seen from the above that by designing the length of the steel formwork, the length of the secondary lining constructed can be moderate and can meet the requirements of the specification, and at the same time, the overall pouring quality of the secondary lining concrete can be guaranteed.
更进一步的方案是,在每个施工区中,浇筑窗的数量为3层,第一振捣组的数量为三组,第二振捣组的数量为两组;在环向上,相邻两个第二气动振捣器错开设置。A further solution is that in each construction area, the number of pouring windows is 3 layers, the number of the first vibrating group is three, and the number of the second vibrating group is two; A second pneumatic vibrator is staggered.
由上可见,上述设计能够进一步优化振捣系统的结构布局,并保证对混凝土的振捣质量及振捣效果。It can be seen from the above that the above design can further optimize the structural layout of the vibrating system, and ensure the vibrating quality and vibrating effect of the concrete.
更进一步的方案是,每层浇筑窗的入料口的数量为四个,且每层浇筑窗中的三个入料口位于边拱部,剩余一个入料口位于第一端部或第二端部,在环向上,相邻两个入料口错开设置;每组第一振捣组的第一气动振捣器的数量为三个;每组第二振捣组的第二气动振捣器的数量为三个。A further solution is that the number of inlets for each layer of pouring windows is four, and three inlets in each layer of pouring windows are located at the side arch, and the remaining one is located at the first end or the second. At the end, in the ring direction, the two adjacent feeding ports are staggered; the number of the first pneumatic vibrators in each first vibrating group is three; the second pneumatic vibrators in each second vibrating group The number of devices is three.
由上可见,上述设计使得入料口、第一气动振捣器、第二气动振捣器之间的相对位置布局更加优化、合理,以进一步保证对混凝土的振捣质量及振捣效果。It can be seen from the above that the above design makes the relative position layout of the feed inlet, the first pneumatic vibrator and the second pneumatic vibrator more optimized and reasonable, so as to further ensure the vibrating quality and vibrating effect of the concrete.
更进一步的方案是,每组第三振捣组的第三气动振捣器的数量为四个;每组第四振捣组的第四气动振捣器的数量为四个;第五振捣组包括两个沿环向分布的第一插入式振捣器;第六振捣组包括两个沿环向分布的第二插入式振捣器;第三插入式振捣器的数量为四个;灌注孔的数量为三个;沿第一方向,钢模板的长度为12米。A further solution is that the number of the third pneumatic vibrators in each third vibrating group is four; the number of the fourth pneumatic vibrators in each fourth vibrating group is four; the fifth vibrating The group includes two first plug-in vibrators distributed in the circumferential direction; the sixth vibration group includes two second plug-in vibrators distributed in the circumferential direction; the number of the third plug-in vibrators is four ; The number of perfusion holes is three; along the first direction, the length of the steel formwork is 12 meters.
由上可见,上述设计能够使振捣系统的整体结构布局处于较优设计,以大幅度降低设置消除衬砌施工中存在的缺陷,使混凝土强度内外基本一致,且强度离散值小,此外,还使拱顶混凝土更加密实,防止出现蜂窝麻面、拱顶混凝土脱空等质量问题。It can be seen from the above that the above design can make the overall structural layout of the vibrating system in a better design, greatly reduce the setting and eliminate the defects existing in the lining construction, so that the concrete strength is basically consistent inside and outside, and the strength dispersion value is small. The vault concrete is more compact to prevent quality problems such as honeycomb pitted surface and voiding of vault concrete.
为了实现本发明的另一目的,本发明提供一种隧道衬砌台车,包括上述的振捣系统。In order to achieve another object of the present invention, the present invention provides a tunnel lining trolley including the above-mentioned vibrating system.
由上可见,设置有上述振捣系统的隧道衬砌台车能够提高二衬混凝土的整体浇筑质量,保证混凝土的密实度及混凝土强度的均匀性,并防止拱顶混凝土脱空;此外,还能够保证混凝土强度内外基本一致,且强度离散值小。It can be seen from the above that the tunnel lining trolley equipped with the above-mentioned vibrating system can improve the overall pouring quality of the secondary lining concrete, ensure the compactness of the concrete and the uniformity of the concrete strength, and prevent the vault concrete from emptying; in addition, it can also ensure The strength of concrete is basically the same inside and outside, and the discrete value of strength is small.
附图说明Description of drawings
图1是现有的振捣系统的结构示意图。FIG. 1 is a schematic structural diagram of a conventional vibrating system.
图2是本发明振捣系统实施例的结构示意图。FIG. 2 is a schematic structural diagram of an embodiment of the vibrating system of the present invention.
图3是本发明振捣系统实施例的浇筑窗分布的结构示意图。FIG. 3 is a schematic structural diagram of the distribution of pouring windows in an embodiment of the vibrating system of the present invention.
图4是本发明振捣系统实施例的第一振捣组和第二振捣组分布的结构示意图。4 is a schematic structural diagram of the distribution of the first vibrating group and the second vibrating group in an embodiment of the vibrating system of the present invention.
图5是本发明振捣系统实施例的使用状态示意图。FIG. 5 is a schematic diagram of a use state of an embodiment of the vibrating system of the present invention.
图6是本发明振捣系统实施例的手持插入式振捣棒在每个入料口的大致振捣范围示意图。Fig. 6 is a schematic diagram showing the approximate vibrating range of the hand-held plug-in vibrator in each feeding port of the vibrating system embodiment of the present invention.
图7是本发明振捣系统实施例的每个第一气动振捣器和每个第二气动振捣器的大致振捣范围示意图。FIG. 7 is a schematic diagram of the approximate vibration range of each first pneumatic vibrator and each second pneumatic vibrator of the vibrating system embodiment of the present invention.
图8是本发明振捣系统实施例的每个第三气动振捣器、每个第四气动振捣器、每个第一插入式振捣器和每个第二插入式振捣器的大致振捣范围示意图。8 is a general view of each third pneumatic vibrator, each fourth pneumatic vibrator, each first plug-in vibrator, and each second plug-in vibrator of the vibrating system embodiment of the present invention Schematic diagram of the vibration range.
图9是本发明振捣系统实施例的每个第三插入式振捣器的大致振捣范围示意图。FIG. 9 is a schematic diagram of the approximate vibrating range of each third insertion vibrator of the vibrating system embodiment of the present invention.
图10是本发明振捣系统实施例的检测波形图。Fig. 10 is a detection waveform diagram of an embodiment of the vibrating system of the present invention.
图11是本发明振捣系统实施例的衬砌拱顶强度声波回弹法检测数据对比表。Fig. 11 is a comparison table of detection data of lining dome strength by acoustic rebound method according to an embodiment of the vibrating system of the present invention.
以下结合附图及实施例对本发明作进一步说明。The present invention will be further described below with reference to the accompanying drawings and embodiments.
具体实施方式Detailed ways
振捣系统实施例Vibration system embodiment
参照图2至图5,振捣系统200包括钢模板2、空气压缩机和控制装置。钢模板2具有两个关于对称面201呈对称设置的施工区20,施工区20具有边拱部202、第一端部203和第二端部204,沿第一方向X,边拱部202位于第一端部203和第二端部204之间。此外,每个施工区20上均设置有多层浇筑窗21、多组第一振捣组22、至少一组第二振捣组23、第三振捣组24、第四振捣组25、第五振捣组26和第六振捣组27。其中,钢模板2的高度方向和轴心均在对称面201上,第一方向X平行于轴心。2 to 5, the vibrating
沿第一方向X,钢模板2的长度介于10米至14米之间,多层浇筑窗21沿钢模板2的环向分布,每层浇筑窗21的包括多个入料口211,多个入料口211沿第一方向X分布。在本实施例中,沿第一方向X,钢模板2的长度为12米,浇筑窗21的数量优选为三层,每层浇筑窗21包括四个入料口211,在第一方向X上,相邻两个入料口211之间的间距优选介于1.8米至2.5米之间;较优地,在第一方向X上,相邻两个入料口211之间的间距为2.2米。其中,三层浇筑窗21位于施工区20的中下部,即对应隧道的边墙区域,每层浇筑窗21中的三个入料口211位于施工区20的边拱部202,剩余一个入料口211则位于第一端部203或第二端部204,且在钢模板2的环向上,相邻两个入料口211错开设置。Along the first direction X, the length of the
进一步地,每个施工区20均设置有至少一个手持插入式振捣棒,使得在向每个入料口211浇筑混凝土时,施工人员能够在混凝土浇筑过程中对混凝土进行初步振捣,以使得注入的混凝土能够初步密实,同时,手持插入式振捣棒的设置能够在混凝土浇筑过程中,施工人员能够通过手持插入式振捣棒控制中埋止水带保持顺直,使中埋止水带不被挤压变形以及防止中埋止水带倾倒。Further, each
多组第一振捣器均设置在施工区20的边拱部202,且多组第一振捣器位于施工区20的中下部,即对应隧道的边墙区域。多组第一振捣组22沿钢模板2的环向分布,且多组第一振捣组22与多层浇筑窗21在钢模板2的环向上相间设置,每组第一振捣组22包括多个第一气动振捣器221,多个第一气动振捣器221沿第一方向X分布。在本实施例中,第一振捣组22的数量优选为三组,每组第一振捣组22包括三个第一气动振捣器221,在第一方向X上,相邻两个第一气动振捣器221之间的间距优选介于1.8米至2.5米之间,第一气动振捣器221的振捣半径优选介于1.8米至2.5米之间;较优地,第一气动振捣器221的振捣半径为2.5米,且在第一方向X上,相邻两个第一气动振捣器221之间的间距为2.2米;此外,在高度方向上,第一气动振捣器221与隧道的矮边墙之间的最小距离优选介于0.8米至1米之间,即最下方一组第一振捣组22的每个第一气动振捣器221的高度与隧道的矮边墙之间的最小距离优选介于0.8米至1米直接,且最下方的一组第一振捣组22的高度小于最底层的浇筑窗21的高度。通过对第一振捣组22和浇筑窗21的相对位置设计,既保证了仰拱与二衬之间的施工缝处的混凝土能够受到全面、充分的振捣,又保证相邻两层浇筑窗21之间的混凝土能够受到全面、充分的振捣,从而使得边墙处混凝土能够更加的密实,减少边墙处混凝土的缺陷病害。The multiple groups of first vibrators are all arranged on the
第二振捣组23设置在施工区20的边拱部202,每组第二振捣组23包括多个第二气动振捣器231,多个第二气动振捣器231沿第一方向X分布。在高度方向上,第二振捣组23位于最顶层的浇筑窗21的上方,使得第二振捣组23位于施工区20的中上部,即对应隧道的拱部区域。在本实施例中,第二振捣组23的数量优选为两组,每组第二振捣组23包括三个第二气动振捣器231,在第一方向X上,相邻两个第二气动振捣器231之间的间距优选介于1.8米至2.5米之间,第二气动振捣器231的振捣半径优选介于1.8米至2.5米之间;较优地,第二气动振捣器231的振捣半径为2.5米,且在第一方向X上,相邻两个第二气动振捣器231之间的间距为2.2米。通过对第二振捣组23的位置设置,使得第二振捣组23能够对拱部处的混凝土进行全面、充分的振捣,以保证拱部处的混凝土能够密实无缺陷病害。The second vibrating
在钢模板2的环向上,相邻两个第一气动振捣器221错开设置,相邻两个第二气动振捣器231错开设置,相邻的一个第一气动振捣器221和一个第二气动振捣器231错开设置。再者,在钢模板2的环向上,位于相邻两层浇筑窗21之间的第一振捣组22靠近该两组相邻的浇筑窗21中高度低的一层浇筑窗21设置,从而保证每个入料口211附近的混凝土受到更好的振捣,以对手持插入式振捣器的振捣盲区进行填补,从而提高整体二衬混凝土的浇筑质量。In the ring direction of the
第三振捣组24设置在施工区20的第一端部203,且第三振捣组24位于施工区20的中下部,即对应隧道的边墙区域。第三振捣组24包括多个第三气动振捣器241,多个第三气动振捣器241沿钢模板2的环向分布。在本实施例中,第三振捣组24包括四个第三气动振捣器241,其中,在钢模板2的环向上,相邻两个第三气动振捣器241之间的间距可根据位于第一端部203处的入料口211的位置进行相适应的设置及调整,以保证第三振捣组24对第一端部203处的混凝土的振捣效果。在高度方向上,第三振捣组24中高度位置最低的第三气动振捣器241与矮边墙之间的最小距离优选介于0.8米至1米之间。第三气动振捣器241的振捣半径优选介于1.8米至2.5米之间,较优地,第三气动振捣器241的振捣半径为2.2米。The third vibrating
通过对第三振捣组24的设置,使得第三振捣组24能够对钢模板2端部的边墙部分的混凝土进行全面、充分的振捣,以保证环向施工缝处混凝土的浇筑质量,从而保证相邻两板二衬之间的衔接质量;此外,第三振捣组24还用于配合第一振捣组22对仰拱与二衬之间的施工缝端部处的混凝土进行充分、有效且全面的振捣,进而保证钢模板2的边墙、端部边墙区域的混凝土的密实度,提升混凝土的浇筑质量。By setting the third vibrating
第四振捣组25设置在施工区20的第二端部204,且第四振捣组25位于施工区20的中下部,即对应隧道的边墙区域。第四振捣组25包括多个第四气动振捣器251,多个第四气动振捣器251沿钢模板2的环向分布。在本实施例中,第四振捣组25包括四个第四气动振捣器251,其中,在钢模板2的环向上,相邻两个第四气动振捣器251之间的间距可根据位于第二端部204处的入料口211的位置进行相适应的设置及调整,以保证第四振捣组25对第二端部204处的混凝土的振捣效果。在高度方向上,第四振捣组25中高度位置最低的第四气动振捣器251与矮边墙之间的最小距离优选介于0.8米至1米之间。第四气动振捣器251的振捣半径优选介于1.8米至2.5米之间,较优地,第四气动振捣器251的振捣半径为2.2米。The fourth vibrating
通过对第四振捣组25的设置,使得第四振捣组25能够对钢模板2端部的边墙部分的混凝土进行全面、充分的振捣,以保证环向施工缝处混凝土的浇筑质量,从而保证相邻两板二衬之间的衔接质量;此外,第四振捣组25还用于配合第一振捣组22对仰拱与二衬之间的施工缝端部处的混凝土进行充分、有效且全面的振捣,进而保证钢模板2的边墙、端部边墙区域的混凝土的密实度,提升混凝土的浇筑质量。By setting the fourth vibrating
第五振捣组26设置在施工区20的第一端部203,在高度方向上,第五振捣组26位于第三振捣组24的上方,使得第五振捣组26位于施工区20的中上部,即对应隧道的拱部区域。第五振捣组26包括至少一个第一插入式振捣器261,在本实施例中,第五振捣组26包括两个第一插入式振捣器261,两个第一插入式振捣器261沿钢模板2的环向分布,其中,在钢模板2的环向上,相邻两个第一插入式振捣器261之间的间距优选介于1.2米至1.8米之间,且第一插入式振捣器261的振捣半径优选介于1.2米至1.8米之间。此外,在钢模板2的环向上,相邻的一个第三气动振捣器241与一个第一插入式振捣器261之间的间距优选介于1.2米至1.8米之间;较优地,相邻两个第一插入式振捣器261之间的间距为1.5米,第一插入式振捣器261的振捣半径为1.5米,相邻的一个第三气动振捣器241与一个第一插入式振捣器261之间的间距为1.5米。The fifth vibrating
通过对第五振捣组26的设置,使得第一插入式振捣器261能够对钢模板2端部的拱顶部分的混凝土进行全面、充分的振捣,以避免混凝土灌入拱顶过程中因局部混凝土聚集而造成小范围内空洞或不密实,从而保证环向施工缝处混凝土的浇筑质量,提高相邻两板二衬的衔接质量;此外,第五振捣组26还用于配合第二振捣组23对拱顶处的混凝土进行振捣,以提高对钢模板2拱顶部分的混凝土的振捣效果。Through the arrangement of the fifth vibrating
第六振捣组27设置在施工区20的第一端部203,在高度方向上,第六振捣组27位于第四振捣组25的上方,使得第六振捣组27位于施工区20的中上部,即对应隧道的拱部区域。第六振捣组27包括至少一个第二插入式振捣器271,在本实施例中,第五振捣组26包括两个第二插入式振捣器271,两个第二插入式振捣器271沿钢模板2的环向分布,其中,在钢模板2的环向上,相邻两个第二插入式振捣器271之间的间距优选介于1.2米至1.8米之间,且第二插入式振捣器271的振捣半径优选介于1.2米至1.8米之间。此外,在钢模板2的环向上,相邻的一个第四气动振捣器251与一个第二插入式振捣器271之间的间距优选介于1.2米至1.8米之间;较优地,相邻两个第二插入式振捣器271之间的间距为1.5米,第二插入式振捣器271的振捣半径为1.5米,相邻的一个第四气动振捣器251与一个第二插入式振捣器271之间的间距为1.5米。The sixth vibrating group 27 is arranged at the
通过对第六振捣组27的设置,使得第二插入式振捣器271能够对钢模板2端部的拱顶部分的混凝土进行全面、充分的振捣,以避免混凝土灌入拱顶过程中因局部混凝土聚集而造成小范围内空洞或不密实,从而保证环向施工缝处混凝土的浇筑质量,提高相邻两板二衬的衔接质量;此外,第六振捣组27还用于配合第二振捣组23对拱顶处的混凝土进行振捣,以提高对钢模板2拱顶部分的混凝土的振捣效果。Through the arrangement of the sixth vibrating group 27, the second inserting
钢模板2的拱顶设置有多个第三插入式振捣器28和多个灌注孔29,多个第三插入式振捣器28沿第一方向X分布,多个灌注孔29沿第一方向X分布。在第一方向X上,多个第三插入式振捣器28和多个灌注孔29相间设置,且多个第三插入式振捣器28和多个灌注孔29均位于对称面201上,优选地,在第一方向X上,第三插入式振捣器28与灌注孔29之间的间距介于1.2米至1.8米之间;较优地,在第一方向X上,第三插入式振捣器28与灌注孔29之间的间距为1.5米。The dome of the
第三插入式振捣器28用于对钢模板2拱顶处的混凝土进行振捣,并在第二振捣组23的配合对拱顶处的混凝土进行更全面、更充分的振捣,以保证拱顶处混凝土分布均匀、密实且强度均匀,并防止由于振捣不到位而导致出现混凝土不密实、蜂窝麻面、拱顶脱空等问题。The third plug-in
结合图6至图9,第一气动振捣器221的振捣半径与临近的其他振捣器的振捣半径咬合,第二气动振捣器231的振捣半径与临近的其他振捣器的振捣半径咬合,第三气动振捣器241的振捣半径与临近的其他振捣器的振捣半径咬合,第四气动振捣器251的振捣半径与临近的其他振捣器的振捣半径咬合,第一插入式振捣器261的振捣半径与临近的其他振捣器的振捣半径咬合,第二插入式振捣器271的振捣半径与临近的其他振捣器的振捣半径咬合,第三插入式振捣器28的振捣半径与临近的其他振捣器的振捣半径咬合;上述设计使得第一振捣组22、第二振捣组23、第三振捣组24、第四振捣组25、第五振捣组26、第六振捣组27及多个第三插入式振捣器28的振捣范围能够覆盖整个二衬混凝土,从而保证二衬混凝土的整体质量。6 to 9 , the vibration radius of the first
空气压缩机通过阀门单元分别与每个第一气动振捣器221、每个第二气动振捣器231、每个第三气动振捣器241、每个第四气动振捣器251、每个第一插入式振捣器261、每个第二插入式振捣器271和每个第三插入式振捣器28连接,控制装置分别与空气压缩机和阀门单元电连接,从而使得控制装置能够通过空气压缩机和阀门单元控制第一振捣组22、第二振捣组23、第三振捣组24、第四振捣组25、第五振捣组26、第六振捣组27和第三插入式振捣器28进行相应的振捣作业。The air compressor is respectively connected with each first
振捣系统的施工方法实施例Example of construction method of vibrating system
本实施例采用上述振捣系统200实施例中的振捣系统200进行施工,具体的施工方法如下:This embodiment adopts the vibrating
施工时,振捣系统200的钢模板2与已浇筑成型的二衬、当前施工段的初次衬砌、仰拱及矮边墙及端头模板之间形成当前施工段的二衬浇筑腔。During construction, the
接着,向施工区20的最底层浇筑窗21浇筑混凝土,浇筑过程中,由工人操作手持插入式振捣器对最底层浇筑窗21处浇筑的混凝土进行振捣。工人操作手持插入式振捣器进行振捣时,分多次、多区域进行,即手持插入式振捣器会对最底层浇筑窗21的每个入料口211附近浇筑的混凝土进行振捣,单次振捣时间优选介于15秒至25秒之间,混凝土振捣后状态以混凝土振捣密实,表面浆体出现为宜,振捣过程中缓插慢拔,使混凝土中气泡充分排出。Next, pour concrete to the
当混凝土漫过最底层浇筑窗21所对应的第一区域内的第三气动振捣器241时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第三气动振捣器241进行第一预设时长的振捣作业;同样地,当混凝土漫过最底层浇筑窗21所对应的第一区域内的第四气动振捣器251时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第四气动振捣器251进行第一预设时长的振捣作业。其中,第一预设时长优选介于50秒至70秒之间。When the concrete flows over the third
当完成最底层浇筑窗21的浇筑后,先将手持插入式振捣器从入料口211中取出,再关闭最底层浇筑窗21的各个入料口211,随后控制装置控制空气压缩机和阀门单元中相应的阀门启动以使得最下方的一组第一振捣组22及第一区域内的第三气动振捣器241、第四气动振捣器251进行第二预设时长振捣。其中,第二预设时长优选介于30秒至50秒之间。When the pouring of the bottommost pouring
优选地,在最底层浇筑窗21浇筑完成后且最底层浇筑窗21关闭前,由工人操作手持插入式振捣器对施工区20的第一端部203处、第二端部204处的中埋止水带周边混凝土进行振捣,使中埋止水带呈顺直状态;该操作能够避免中埋止水带被挤压变形和/或倾倒,以使止水带保持顺直状态,从而保证中埋止水带的防水效果。Preferably, after the pouring of the bottommost pouring
接着,向施工区20的第二层浇筑窗21浇筑混凝土,浇筑过程中,由工人操作手持插入式振捣器对第二层浇筑窗21处浇筑的混凝土进行振捣。工人操作手持插入式振捣器进行振捣时,分多次、多区域进行,即手持插入式振捣器会对最底层浇筑窗21的每个入料口211附近浇筑的混凝土进行振捣,单次振捣时间优选介于15秒至25秒之间,混凝土振捣后状态以混凝土振捣密实,表面浆体出现为宜,振捣过程中缓插慢拔,使混凝土中气泡充分排出。Next, pour concrete to the pouring
当混凝土漫过第二层浇筑窗21所对应的第二区域内的第三气动振捣器241时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第三气动振捣器241进行第三预设时长的振捣作业;同样地,当混凝土漫过第二层浇筑窗21所对应的第二区域内的第四气动振捣器251时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第四气动振捣器251进行第三预设时长的振捣作业。其中,第三预设时长优选介于30秒至50秒之间。When the concrete flows over the third
当完成第二层浇筑窗21的浇筑后,先将手持插入式振捣器从入料口211中取出,再关闭第二层浇筑窗21的各个入料口211,随后控制装置控制空气压缩机和阀门单元中相应的阀门启动以使得第二组第一振捣组22、第二区域内的第三气动振捣器241及第四气动振捣器251进行第四预设时长振捣;以及使得最底层的一组第一振捣组22进行第五预设时长振捣。其中,第四预设时长优选介于30秒至50秒之间;第五预设时长优选介于40秒至60秒之间。When the pouring of the second-
接着,向施工区20的最顶层浇筑窗21浇筑混凝土,浇筑过程中,由工人操作手持插入式振捣器对最顶层浇筑窗21处浇筑的混凝土进行振捣。工人操作手持插入式振捣器进行振捣时,分多次、多区域进行,即手持插入式振捣器会对最顶层浇筑窗21的每个入料口211附近浇筑的混凝土进行振捣,单次振捣时间优选介于15秒至25秒之间,混凝土振捣后状态以混凝土振捣密实,表面浆体出现为宜,振捣过程中缓插慢拔,使混凝土中气泡充分排出。Next, pour concrete to the topmost pouring
当混凝土漫过最顶层浇筑窗21所对应的第三区域内的第三气动振捣器241时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第三气动振捣器241进行第六预设时长的振捣作业;同样地,当混凝土漫过最顶层浇筑窗21所对应的第二区域内的第四气动振捣器251时,控制装置控制空气压缩机和阀门单元中相应的阀门启动,以使得第四气动振捣器251进行第六预设时长的振捣作业。其中,第六预设时长优选介于30秒至50秒之间。When the concrete overflows the third
当完成最顶层浇筑窗21的浇筑后,先将手持插入式振捣器从入料口211中取出,再关闭最顶层浇筑窗21的各个入料口211,随后控制装置控制空气压缩机和阀门单元中相应的阀门启动以使得最上方的一组第一振捣组22、第三区域内的第三气动振捣器241及第四气动振捣器251进行第七预设时长振捣;以及使得第二组第一振捣组22进行第八预设时长振捣。其中,第七预设时长优选介于30秒至50秒之间;第五预设时长优选介于40秒至60秒之间。When the pouring of the topmost pouring
接着,向灌注孔29浇筑混凝土,浇筑过程中,根据要求启动第三插入式振捣器28进行第一预设模式振捣,具体地,当混凝土漫过位于拱顶的第三插入式振捣器28时,控制装置控制空气压缩机和阀门单元中相应的阀门启动以使第三插入式振捣器28进行第一预设模式振捣,第一预设振捣模式为:控制第三插入式振捣器28间歇启动两次至四次,单次启动进行第十三预设时长振捣,其中,第十四预设时长优选介于20秒至35秒之间。Next, pour concrete into the pouring
当混凝土漫过第一组第二振捣组23第一预设距离时,启动第一组第二振捣组23进行第九预设时长振捣。其中,第一预设距离优选介于0.5米至0.6米之间,第九预设时长优选介于25秒至40秒之间。When the concrete spreads over the first preset distance of the first group of the second vibrating
当混凝土漫过第二组第二振捣组23第二预设距离时,启动第二组第二振捣组23进行第十预设时长振捣、启动第一组第二振捣组23进行第十一预设时长振捣。其中,第二预设距离优选介于0.5米至0.6米之间,第十预设时长优选介于25秒至40秒之间,第十一预设时长优选介于30秒至50秒之间。When the concrete overflows the second preset distance of the second vibrating
当第一插入式振捣器261和第二插入式振捣器271被混凝土漫过时,启动并进行第二预设模式振捣。第二预设振捣模式为:控制第一插入式振捣器261间歇启动两次至四次,单次启动进行第十五预设时长振捣;控制第二插入式振捣器271间歇启动两次至四次,单次启动进行第十五预设时长振捣。其中,第十五预设时长优选介于20秒至35秒之间。When the
此外,在高度方向上,当混凝土漫过最顶层浇筑窗211米至1.5米时,启动最上方的一组第一振捣组22进行第十二预设时长振捣,第十二预设时长优选介于30秒至50秒之间。当完成混凝土浇筑结束时,启动第二组第二振捣组23进行第十三时长振捣,第十三预设时长优选介于30秒至50秒之间。In addition, in the height direction, when the concrete overflows the topmost pouring window 211m to 1.5m, the topmost first vibrating
其中,需要说明的是,上述施工过程是单独针对一个施工区20的混凝土浇筑施工顺序进行举例说明,以便于本领域技术人员了解施工区20的混凝土浇筑过程,而在实际混凝土浇筑施工过程中,两个施工区20需要进行对称浇筑,具体两个施工区20切换混凝土浇筑的时机优选包括以下两种:Among them, it should be noted that the above-mentioned construction process is an example for the concrete pouring construction sequence of a
第一种,当完成第一个施工区20的最底层浇筑窗21的浇筑及振捣后,进行第二个施工区20的最底层浇筑窗21的浇筑及振捣;当完成第二个施工区20的最底层浇筑窗21的浇筑及振捣后,进行第一个施工区20的第二层浇筑窗21的浇筑及振捣;当完成第一个施工区20的第二层浇筑窗21的浇筑及振捣后,进行第二个施工区20的第二层浇筑窗21的浇筑及振捣;当完成第二个施工区20的第二层浇筑窗21的浇筑及振捣后,进行第一个施工区20的最顶层浇筑窗21的浇筑及振捣;当完成第一个施工区20的最顶层浇筑窗21的浇筑及振捣后,进行第二个施工区20的最顶层浇筑窗21的浇筑及振捣;当完成第二个施工区20的最顶层浇筑窗21的浇筑及振捣后,向灌注孔29浇筑混凝土。在向灌注孔29浇筑混凝土过程中,优选先向第一个施工区20浇筑混凝土漫过第一组第二振捣组23第一预设距离后,切换至第二个施工区20进行混凝土浇筑;当第二个施工区20的混凝土漫过第一组第二振捣组23第一预设距离后,切换至第一个施工区20进行混凝土浇筑;当第一个施工区20的混凝土漫过第二组第二振捣组23第二预设距离后,切换至第二个施工区20进行混凝土浇筑;当第二个施工区20的混凝土漫过第二组第二振捣组23第二预设距离后,切换至第一个施工区20进行混凝土浇筑。如此循环浇筑,当混凝土接近钢模板2拱顶区域时,可同时向两个施工区20进行混凝土浇筑。First, when the pouring and vibrating of the bottommost pouring
第二种,同一车次的混凝土浇筑至同一个施工区20,当完成当前车次混凝土的浇筑后,下一车次的混凝土切换至另一个施工区20进行浇筑,如此循环直至完成对两个施工区20的三层浇筑窗21的混凝土浇筑。同理地,在向灌注孔29浇筑混凝土过程中,优选先向第一个施工区20浇筑混凝土漫过第一组第二振捣组23第一预设距离后,切换至第二个施工区20进行混凝土浇筑;当第二个施工区20的混凝土漫过第一组第二振捣组23第一预设距离后,切换至第一个施工区20进行混凝土浇筑;当第一个施工区20的混凝土漫过第二组第二振捣组23第二预设距离后,切换至第二个施工区20进行混凝土浇筑;当第二个施工区20的混凝土漫过第二组第二振捣组23第二预设距离后,切换至第一个施工区20进行混凝土浇筑。如此循环浇筑,当混凝土接近钢模板2拱顶区域时,可同时向两个施工区20进行混凝土浇筑。The second type is that the concrete of the same train is poured into the
此外,在对每层浇筑窗21进行混凝土浇筑时,在第一方向X上按顺序依次向多个入料口211浇筑预设高度的混凝土;在对拱顶的多个灌注孔29进行混凝土浇筑时,在第一方向X上按顺序依次向多个灌注孔29浇筑预设高度的混凝土。当振捣系统200处于斜坡时,在对每层浇筑窗21进行混凝土浇筑时,从高度低的入料口211依次向高度高的入料口211浇筑混凝土;在对拱顶的多个灌注孔29进行混凝土浇筑时,从高度低的灌注孔29依次向高度高的灌注孔29浇筑混凝土。In addition, when pouring concrete on each floor of the pouring
结合图10,利用地质雷达和弹性波法对本振捣系统200的插入式高频振捣器和附着气动振捣器结构布局及使用效果进行强度和密实度比较,其中,雷达波形无明显差异,弹性波法结果表明插入式振捣比气动式振捣的衬砌混凝土更密实,尤其是靠近防水板区域效果更明显。With reference to Fig. 10, the structural layout and use effect of the plug-in high-frequency vibrator and the attached pneumatic vibrator of the local vibrating
在本振捣系统200施工过程中,随机选取连续3板检测,每板测2个点,分别测出表层及深层强度分析,其中,衬砌台车改装前后衬砌拱顶强度声波回弹法检测数据请见图11。可见,改装前后施工混凝土强度均能满足设计要求;但对比数据,改装后施工衬砌强度表层与深层强度离散较小基本一致,而改装前施工的衬砌表层与深层强度离散较大,这与混凝土振捣不到位,造成骨料分布不均匀有一定关系,因此,改装后衬砌拱顶靠近防水板深层区域强度稍高。During the construction process of the local vibrating
综上可见,本发明提供的振捣系统及其施工方法能更好的提升钢模板的边墙及拱部区域、拱顶区域、两端部区域的混凝土的振捣效果,以提高混凝土的密实度,防止混凝土出现空洞,并降低纵向施工缝和环向施工的混凝土病害,从而有效提高二衬混凝土的整体浇筑质量,防止拱顶混凝土脱空,保证混凝土强度内外基本一致,且强度离散值小。To sum up, the vibrating system and its construction method provided by the present invention can better improve the vibrating effect of the concrete in the side wall and the arch area, the vault area and the two end areas of the steel formwork, so as to improve the compaction of the concrete. It can effectively improve the overall pouring quality of the secondary lining concrete, prevent the concrete of the vault from emptying, and ensure that the strength of the concrete is basically the same inside and outside, and the discrete value of the strength is small. .
隧道衬砌台车实施例Example of tunnel lining trolley
隧道衬砌台车包括上述振捣系统实施例中的振捣系统,并实用上述振捣系统的施工方法对隧道二衬进行施工,可见,采用振捣系统及其施工方法的隧道衬砌台车能够提高二衬混凝土的整体浇筑质量,保证混凝土的密实度及混凝土强度的均匀性,并防止拱顶混凝土脱空;此外,还能够保证混凝土强度内外基本一致,且强度离散值小。The tunnel lining trolley includes the vibrating system in the above-mentioned embodiment of the vibrating system, and the construction method of the above-mentioned vibrating system is used to construct the secondary lining of the tunnel. It can be seen that the tunnel lining trolley using the vibrating system and the construction method can improve the performance of the tunnel lining trolley. The overall pouring quality of the secondary lining concrete ensures the compactness of the concrete and the uniformity of the concrete strength, and prevents the vault concrete from emptying; in addition, it can also ensure that the concrete strength is basically the same inside and outside, and the strength dispersion value is small.
最后需要强调的是,以上所述仅为本发明的优选实施例,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种变化和更改,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。Finally, it should be emphasized that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Within the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.
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