CN107882027B - Clamp for piling corrugated sheet piles - Google Patents

Abstract

The invention relates to a clamp for piling a corrugated sheet pile, which comprises a thick steel plate, a first web support plate and a clamping device, wherein the first web support plate is perpendicular to the thick steel plate and is used for supporting the outer side of a sheet pile web; the clamping device comprises at least one freely rotatable support plate I for supporting the outer sides of two wings of the sheet pile, a freely rotatable support plate II for supporting the inner sides of the two wings of the sheet pile, and a support plate III for supporting the inner sides of webs of the sheet pile, wherein the support plate III is parallel to the web support plate I; and the second support plate and the third support plate are fixed on the thick steel plate through a hydraulic tensioning device. The invention aims to provide a clamp for piling a corrugated sheet pile, which can ensure the whole stress and average stress of the sheet pile as much as possible. The invention adopts the form of the clamp, is suitable for a general pile driver, and can lead the general pile driver to be suitable for the wave sheet pile without changing the pile driver, thereby indirectly saving the construction cost.

Description

A clamp for driving corrugated sheet piles

Technical field

The present invention relates to a clamp for a pile driver, and in particular to a clamp for corrugated sheet pile driving.

Background technique

With the development of the times and the advancement of technology, there are more and more types of prefabricated sheet piles. The area of the sheet piles has become relatively larger and the shape has become irregular. This makes the pile driver originally designed to drive circular precast piles less suitable. For new corrugated sheet piles. The existing pile driver can only exert vertical punching force on a certain part of the corrugated sheet pile, and cannot force the entire sheet pile. The local stress on the sheet pile is the culprit of damage and cracking of the sheet pile. At the same time, the irregular shape of the corrugated sheet pile causes its center of gravity to not be on the section of the sheet pile. No matter where the punching force is applied to the section of the sheet pile, the sheet pile will be eccentrically compressed, which will cause the sheet pile to tilt, shift, etc. . Therefore, it is necessary to find a method that can not only ensure the overall stress and average stress of the sheet pile, but also allow the punching force to act on the center of gravity of the sheet pile.

The existing corrugated sheet pile uses a small clamp to clamp the web of the corrugated sheet pile during piling. The pile driver directly applies vertical punching force to the clamp, and drives the entire corrugated sheet pile into the soil by applying stamping force to the web. This technology makes corresponding modifications to the original piling, so that it can drive corrugated sheet piles. However, this technology is not effective because the center of gravity of corrugated sheet piles is not on its web. Using this technology to barely drive piles, many people Corrugated sheet piles are damaged to a certain extent after piling.

In addition, a clamp is used to clamp the web of the corrugated sheet pile, and the pile driver applies vertical punching force to the clamp, which is transmitted to the corrugated sheet pile through the clamp, and the corrugated sheet pile is driven into the soil as a whole. This technology causes the corrugated sheet pile to experience a huge punching force at the web. The stress area is small and the force is extremely uneven relative to the entire corrugated sheet pile cross-section. The local stress causes the corrugated sheet pile to move in various directions during the piling process. Various degrees of damage and cracking occur at various locations, which will not only shorten the service life of the sheet piles, but also affect the overall appearance of the sheet piles after construction is completed. Applying eccentric punching force may also cause a certain degree of inclination or a certain horizontal displacement of the sheet piles after driving, which is not conducive to the overall stress of the sheet pile enclosure structure. If the number of inclined sheet piles reaches a certain level, it will Will affect the overall stability of the sheet pile enclosure structure.

Contents of the invention

In view of the above defects, the object of the present invention is to provide a clamp for corrugated sheet pile driving, which can ensure the overall stress and average stress of the sheet pile as much as possible.

The present invention is implemented as follows:

A clamp for corrugated sheet pile piling, including a thick steel plate, a web support plate perpendicular to the thick steel plate for supporting the outside of the sheet pile web, and a clamping device; the clamping device includes at least A freely rotatable support plate one for supporting the outer sides of the two wings of the sheet pile, a freely rotatable support plate two for supporting the inner sides of the two wings of the sheet pile, and a support plate three for supporting the inner side of the sheet pile web. Plate three is parallel to the web support plate one; the support plate two and support plate three are fixed to the thick steel plate through a hydraulic tensioning device.

The hydraulic tensioning device includes two hydraulic telescopic arms at both ends. The outer end of each hydraulic telescopic arm is connected to the second support plate through a ball chain chain. The hydraulic tensioning device also includes a vertical arm perpendicular to the web support plate. Jack; the jack is vertically connected to the support plate 3 through its telescopic pole.

The present invention uses a hydraulic tensioning device to fix the sheet pile, which can effectively fix the sheet pile and the clamp, prevent the relative displacement of the sheet pile and the clamp in the horizontal direction during the piling process, and at the same time increase the stress-bearing area of the corrugated sheet pile, effectively It effectively solves the problem of damage and cracking of the pile head during the piling process.

The jack can also use other hydraulic tensioning clamps to achieve the function of fixing sheet piles and improve work efficiency.

Preferably, the thickness of the thick steel plate is 200mm.

Preferably, the horizontal section of the thick steel plate matches the vertical section shape of the corrugated sheet pile body and can cover the corrugated sheet pile body.

More preferably, the outer dimensions of the thick steel plate are 1100m in length, 500mm in width, and 200mm in height.

More preferably, the outer dimensions of the thick steel plate are 1100m in length, 670mm in width, and 200mm in height.

The support plate 1 is connected to the thick steel plate through a ball hinge. The ball hinge constraint allows the support plate to rotate at a certain angle and automatically adapt to changes in the angle of the corrugated sheet pile, so that different types of corrugated sheet piles can be fixed to the fixture.

The thick steel plate also includes a slide rail on the top, and a movable connector that can move along the slide rail.

The movable connector can move and adjust its position through the slide rail provided on the thick steel plate. When it is adjusted to the appropriate position (the center of gravity of the corrugated sheet pile), it can be moved through the internal bolts of the connector. fixed on the steel plate. The invention provides a connection device with the pile driver at the center of gravity of the corrugated sheet pile, so that the punching force received by the corrugated sheet pile during the piling process is always at its center of gravity, effectively solving the inclination and displacement of the corrugated sheet pile during the piling process. etc.

The above clamp is designed for corrugated sheet piles and can be applied to all types of corrugated sheet piles.

The size and cross-sectional form of the clamp can be changed in the plane layout, and is suitable for other pile drivers; if the pile driver is not changed, it is also suitable for other corrugated sheet piles.

The use of the clamp is as follows:

Before piling, the movable connector is moved and adjusted according to the center of gravity of different types of corrugated sheet piles, and then connected to the piling machine; during piling, the thick steel plate is in contact with the entire corrugated sheet pile. When the two wings of the sheet pile When pressure is pressed against the support plates on both sides of the thick steel plate, the support plate will automatically adapt to the angle between the two wings and fit closely with the two wings; pressure is exerted on the two wings through the hydraulic tensioning device. When the hydraulic telescopic arm stretches, the support plate When the second support plate is pressed against the two wings of the sheet pile, the second support plate will automatically adjust the angle between the two wings to close to the two wings, so that the two wings of the sheet pile are clamped between the first and second support plates. By applying pressure from the jack, the corrugated sheet pile can be The web is clamped between the web support plate and support plate 3.

The invention has the following advantages:

By improving the construction device, the present invention allows the corrugated sheet pile to be fully and uniformly stressed during the construction process, and at the same time ensures that the punching force it receives acts on the center of gravity of the sheet pile, thereby preventing damage and cracking of the pile head during the pile driving process of the ecological sheet pile. ; Avoid inclination and displacement of the entire sheet pile, improve construction efficiency, and improve project quality.

1. The present invention uses a clamp for corrugated sheet piles to contact the sheet piles over a large area to transmit the punching force, so that the sheet piles are fully and uniformly stressed during the piling process, and solve the phenomenon of pile head damage, cracking and other phenomena caused by local stress on the sheet piles. .

2. The present invention sets a movable connector for the center of gravity of the corrugated sheet pile to connect to the pile driver, ensuring that the sheet pile is always under pressure on the axis during the piling process, greatly reducing the possibility of tilting and displacement of the sheet pile.

3. The present invention adopts the form of a clamp and is suitable for general pile drivers. Without changing the pile driver, the present invention allows general pile drivers to be suitable for corrugated sheet piles, which indirectly saves construction costs.

4. The present invention uses a support plate with an adjustable angle on the fixing device, which can be applied to all corrugated sheet piles. It has a wide range of applications and good use effects. It can greatly improve the quality of the project at a small cost, save costs for the enterprise, and improve production efficiency. , thereby enhancing the competitiveness of enterprises.

Description of the drawings

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Figure 1 is the front view of the corrugated sheet pile clamp;

Figure 2 is a top view of the corrugated sheet pile clamp;

Figure 3 is the bottom view of the corrugated sheet pile clamp;

Figure 4 is a three-dimensional view of the corrugated sheet pile clamp;

Figure 5 shows the usage status diagram of the fixture;

The numbers in the figure are: 1 support plate one, 2 support plate two, 3 hydraulic telescopic arm, 4 ball hinge, 5 web support plate, 6 hydraulic telescopic arm fixed end, 7 thick steel plate, 8 movable connector, 9 slide rail , 10 jacks, 11 support plates three, 101 webs, 102 wings.

Detailed ways

Example 1

As shown in Figures 1-4, a clamp for driving corrugated sheet piles includes a thick steel plate 7, a web support plate 5 perpendicular to the thick steel plate 7 for supporting the outside of the sheet pile web, and a clamp The clamping device includes two freely rotatable support plates 1 for supporting the outer sides of the sheet pile wings, a freely rotatable support plate 2 for supporting the inner sides of the sheet pile wings, and a support plate for The support plate three 11 on the inside of the pile web; the support plate two 2 and the support plate three 11 are fixed to the thick steel plate 7 through a hydraulic tensioning device.

The hydraulic tensioning device includes two hydraulic telescopic arms 3 at both ends. The outer end of each hydraulic telescopic arm 3 is connected to the support plate 2 through a ball chain 4. The hydraulic tensioning device also includes a support plate perpendicular to the web. The jack 10 of the plate support plate 5 is vertically connected to the support plate 3 11 through its telescopic pole.

The thickness of the thick steel plate 7 is 200mm.

The upper part of the thick steel plate 7 has a trapezoidal structure, and the lower part is provided with horizontal protrusions on both sides.

The support plate 1 is connected to the thick steel plate 7 through a ball hinge 4 .

The thick steel plate 7 also includes two slide rails 9 on the top, and a movable connector 8 that can move along the slide rails 9 .

Before piling, the connector is connected to the pile driver, and then the entire fixture is connected to the corrugated sheet pile. When piling, the vertical punching force exerted by the pile driver acts on the connector 8 and is transmitted to the entire thick steel plate 7 through the connector 8. The thick steel plate 7 is in contact with the entire corrugated sheet pile, and then the punching force provided by the pile driver is transmitted to the entire thick steel plate 7. This ensures that the corrugated sheet pile is fully stressed during the piling process and avoids damage and cracking of the pile head caused by local stress on the sheet pile during the piling process. At the same time, the movable connector 8 on the clamp can move up and down to adjust its position through the slide rail 9 designed on the thick steel plate 7. When it is adjusted to the appropriate position, the connector 8 can be fixed on the thick steel plate 7 through internal bolts. The movable connector 8 can be adjusted for the center of gravity of different types of corrugated sheet piles, so that the punching force of the pile driver can always act on the center of gravity of the corrugated sheet piles. On the whole, the sheet pile as a whole is subject to the punching force exerted by the pile driver on its center of gravity, which solves the problem of eccentric compression of the sheet pile and can effectively reduce the inclination, displacement and other hazards of the corrugated sheet pile during the piling process.

The unified clamp for corrugated sheet piles of the present invention can be designed with two sets of clamps. One set of clamps is used for corrugated sheet piles with a height of 300-450mm (the outer dimensions of the thick steel plate 7 are 1100m long, 500mm wide, and 200mm high), and the other set of clamps is used for heights of 300-450mm. For 500-600mm corrugated sheet piles (the overall dimensions of the thick steel plate 7 are 1100m long, 670mm wide and 200mm high), two sets of clamps can be used for all types of corrugated sheet piles. The type of corrugated sheet pile is mainly determined by the height of the sheet pile. If the height of the corrugated sheet pile is different, the length of the two wings of the sheet pile will change, and at the same time, the angle between the two wings and the web will also change slightly.

The support plate 1 of the present invention is connected to the thick steel plate 7 through the ball hinge 4, so that it can rotate at a certain angle in the horizontal plane without displacement. When the two wings of the sheet pile are pressed towards the support plate 1 under pressure, the ball hinge 4 The adjustment of the angle makes the support plate 1 automatically adapt to the angle between the two wings and fit closely with the two wings. The general direction of the hydraulic telescopic arm 3 is perpendicular to the two wings of the sheet pile, and it is fixed on the fixed end 6 of the hydraulic telescopic arm. The fixed end 6 of the hydraulic telescopic arm is connected to the thick steel plate 7. The support plate 2 is connected to the hydraulic telescopic arm 3 through the ball hinge 4. The support plate 2 can also be rotated at a certain angle on the horizontal plane to adapt to the change in the angle of the two wings of the sheet pile, so that its support surface can always be in contact with the two wings of the corrugated sheet pile. When the clamp is working, the hydraulic telescopic arm 3 is extended to apply pressure to the two wings of the sheet pile, so that the two wings of the sheet pile are clamped between two support plates 1 and 2, thereby realizing the connection between the sheet pile and the clamp. Lateral fixation on the horizontal plane. The web support plate 5 is directly fixed on the thick steel plate 7. The top of the telescopic pole of the jack 10 is provided with a support plate 311 parallel to the web support plate 5. The sheet pile web can be clamped between the web support plate 5 and the support plate 3 11 by applying pressure from the jack 10, thereby vertically fixing the sheet pile and the clamp on the horizontal plane. At this point, the relative displacement of the sheet pile and the clamp can be greatly reduced during the piling process. At the same time, through the adaptive function of the ball hinge 4 to change the angle between the two wings, a set of clamps can be applied to multiple types of sheet piles.

The corrugated sheet pile mentioned in the present invention includes a web 101 and two wings 102, and its cross-section is wavy. The use state of the clamp of the present invention on the corrugated sheet pile is shown in Figure 5.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments we have described are only illustrative and are not used to limit the scope of the present invention. Those skilled in the art Equivalent modifications and changes made by skilled persons in accordance with the spirit of the present invention shall be covered by the scope of protection of the claims of the present invention.

Claims (6)

1. A clamp for piling corrugated sheet piles, which is characterized in that: the device comprises a thick steel plate, a first web support plate and a clamping device, wherein the first web support plate is perpendicular to the thick steel plate and used for supporting the outer side of a sheet pile web; the clamping device comprises at least one freely rotatable support plate I for supporting the outer sides of two wings of the sheet pile, a freely rotatable support plate II for supporting the inner sides of the two wings of the sheet pile, and a support plate III for supporting the inner sides of webs of the sheet pile, wherein the support plate III is parallel to the web support plate I; the second support plate and the third support plate are fixed on the thick steel plate through a hydraulic tensioning device;

the hydraulic tensioning device comprises two hydraulic telescopic arms at two ends, the outer end of each hydraulic telescopic arm is connected with the second supporting plate through a ball hinge, and the hydraulic tensioning device further comprises a jack perpendicular to the web supporting plate; the jack is vertically connected with the support plate III through a telescopic post rod of the jack;

the thickness of the thick steel plate is 200mm.

2. A clamp for driving corrugated sheet piles as claimed in claim 1, wherein: the overall dimension of the thick steel plate is 1100mm long, 500mm wide and 200mm thick.

3. A clamp for driving corrugated sheet piles as claimed in claim 1, wherein: the overall dimension of the thick steel plate is 1100mm long, 670mm wide and 200mm thick.

4. A clamp for driving corrugated sheet piles as claimed in claim 1, wherein: the horizontal section of the thick steel plate is identical with the vertical section of the wave-shaped sheet pile body, and can cover the wave-shaped sheet pile body.

5. A clamp for driving corrugated sheet piles as claimed in claim 1, wherein: the first supporting plate is connected with the thick steel plate through a ball hinge.

6. A clamp for driving corrugated sheet piles as claimed in claim 1, wherein: the thick steel plate further comprises a sliding rail at the top and a movable connector capable of moving along the sliding rail.