CN102864850B - Anti-seismic device for high-rise rotating mechanism - Google Patents

Abstract

The invention relates to an anti-seismic device for a high-rise rotating mechanism. The high-rise rotating mechanism comprises a lower fixing component and a rotating body, the lower fixing component comprises a core column and a base, the lower end of the core column is fixed to the base, the upper end of the core column penetrates through the center of the rotating body, and the rotating body is sleeved on the core column. The anti-seismic device is characterized by comprising a yieldable rod, a damper and a seismic isolation layer, wherein the yieldable rod is arranged on the core column and connected with the rotating body, the damper is arranged between the core column and the rotating body, and the seismic isolation layer is arranged between the rotating body and the base. Compared with the prior art, the anti-seismic device is fine in anti-seismic performance and has a seismic resistance effect for a lower building.

Description

An anti-seismic device for high-rise rotating mechanism

technical field

The invention relates to an anti-seismic device, in particular to an anti-seismic device for a high-rise rotating mechanism.

Background technique

With the development of urbanization, a large number of high-rise buildings stand in the city, providing conditions for people to climb up and view the scenery. Now many large and medium-sized cities have built rotating sightseeing floors on the top of high-rise buildings to better meet this requirement. need. The building of the top band rotation layer of construction at present, the technology that usually adopts is: high-rise (super high-rise) building top rotation building rotates around its lower main body fixed building protruding upper convex part with greater rigidity as an axis.

For a real rotating structure, the rotating part and the lower part are completely disengaged, which is not only a difficult problem in structural design, but also very difficult for the structure to resist earthquakes. There are very few rotating buildings in China and even in the world.

Contents of the invention

The object of the present invention is to provide a kind of anti-seismic device for high-rise rotating mechanism which has good anti-seismic performance and can simultaneously enhance the anti-seismic performance of lower buildings in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions: an anti-seismic device for a high-rise rotating mechanism, the high-rise rotating mechanism includes a lower fixing assembly and a rotating body, the lower fixing assembly includes a core column and a base, the The lower end of the core column is fixed to the base, and the upper end passes through the center of the rotating main body. The rotating main body is sleeved on the core column. It is characterized in that the anti-seismic device includes a yieldable rod, a damper and a seismic isolation layer. The yieldable rod is arranged on the core column and connected with the rotating body, the damper is arranged between the core column and the rotating body, and the shock-isolation layer is arranged between the rotating body and the base.

The shock-isolation layer is provided with a shock-isolation support.

The yieldable bar is clamped with the core column through a buckle provided on the core column.

The frequency of the rotating body is close to the natural frequency of the lower fixed component.

Compared with the prior art, the present invention has the following advantages:

1) The horizontal stiffness of the seismic isolation layer is very small, and the shear deformation of the superstructure is concentrated on this layer during an earthquake, thereby reducing the shear force on the rotating mechanism and preventing the damage of the overall structure.

2) Due to the provision of yieldable rods, when encountering general wind loads and small earthquakes, the rotating body is rigidly connected to the base without causing excessive interstory displacement; when encountering major earthquakes, the yieldable rods Self-destruction, allowing the shock-isolation layer to function.

3) A damper is provided between the rotating body and the core column, and the energy dissipation performance of the damper and the discontinuous relative displacement between the rotating body and the base are used to ensure the performance of energy dissipation and shock absorption of the rotating body.

4) The seismic isolation layer is set on a high-rise, and there is no need to reserve space for the large displacement of the seismic isolation layer during an earthquake, and it is not necessary to set up structural measures corresponding to the reserved space, and it can make the entire building structure anti-overturning The ratio of the moment to the overturning moment is increased to ensure that the anti-seismic structure does not overturn and fail during an earthquake.

5) This scheme regards the rotating body at the top as a frequency-modulated mass damper, which not only solves the seismic problem of the rotating body itself, but also has a significant effect on the seismic resistance of the base, achieving a win-win situation for earthquake resistance.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the top view structure schematic diagram of the present invention;

Fig. 3 is a schematic diagram of the three-dimensional structure of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figures 1 to 3, an anti-seismic device for a high-rise rotating mechanism, the high-rise rotating mechanism includes a rotating main body 6 and a lower fixing assembly, the lower fixing assembly includes a core column 5 and a base 7, and the lower end of the core column 5 is fixed to the base 7. The upper end passes through the center of the rotating main body 6, and the rotating main body 6 is sleeved on the core column 5, and rotates around the core column 5 as an axis. The seismic isolation layer 3 is set between the rotating main body 6 and the base 7, and the seismic isolation support 2 is arranged inside the seismic isolation layer 3. During an earthquake, the shear deformation of the superstructure is concentrated on this layer, thereby reducing the force transmission at the bottom of the rotating main body 6. The shear force on the member prevents the damage of the overall structure. Since the seismic isolation layer 3 is set on a high-rise, there is no need to reserve space for the large displacement of the seismic isolation layer during an earthquake, and it is not necessary to set up structural measures corresponding to the reserved space, and it can make the entire building structure anti-overturning The ratio of the moment to the overturning moment is increased to ensure that the anti-seismic structure does not overturn and fail during an earthquake. The yieldable rod 4 is clamped on the core column 5 and connected with the rotating main body 6. When encountering general wind load and small earthquake, the rotating main body 6 is rigidly connected with the base 7, which will not cause excessive interstory displacement; The strength of the yieldable bar 4 is determined according to the earthquake magnitude, and when the earthquake magnitude reaches a preset magnitude, the yieldable bar 4 is destroyed by itself, so that the seismic isolation layer 3 can play a role. The damper 1 is arranged between the rotating main body 6 and the core column 5, and the energy dissipation performance of the damper 1 and the characteristics of no continuous relative displacement between the rotating main body 6 and the base 7 ensure the energy dissipation and shock absorption of the rotating main body 6. performance.

Apply the device of the present invention to a high-rise revolving restaurant. When designing, consider the quality and stiffness to adjust the frequency of the revolving restaurant so that it is close to the natural frequency of the fixed building on the lower floor. According to the tuned mass damper (tuned massdamper) theory, it can make While the revolving restaurant is shock-absorbing, it also plays a beneficial role in the earthquake resistance of the fixed building below.

In addition to the revolving restaurant, the device of the present invention can also be applied to high-rise revolving buildings such as revolving sightseeing halls.

Claims (4)

1. the antishock device for high-rise rotating mechanism, described high-rise rotating mechanism comprises lower floor's fixation kit and rotating main body, described lower floor's fixation kit comprises core column and base portion, base portion is fixed in described core column lower end, upper end is through rotating main body center, described rotating main body is sheathed on core column, it is characterized in that, described antishock device comprises can surrender rod member, damper and Seismic Isolation of Isolation Layer, described surrendered to rod member is located on core column and with rotating main body and is connected, described damper is located between core column and rotating main body, described Seismic Isolation of Isolation Layer is located between rotating main body and base portion.

2. a kind of antishock device for high-rise rotating mechanism according to claim 1, is characterized in that, in described Seismic Isolation of Isolation Layer, is provided with shock isolating pedestal.

3. a kind of antishock device for high-rise rotating mechanism according to claim 1, is characterized in that, described surrendered to rod member is by being located at buckle and the core column clamping on core column.

4. a kind of antishock device for high-rise rotating mechanism according to claim 1, is characterized in that, the natural frequency of the frequency of described rotating main body and lower floor's fixation kit approaches.