A high-rise building damping structure and a construction method thereof

Abstract

The application relates to a high-rise building shock absorption structure and a construction method thereof, and relates to the technical field of high-rise building safe construction. The high-rise building shock absorption structure comprises precast piles and a bearing platform. The precast piles are arranged in a rectangular array and are provided with a plurality of precast piles. The precast piles are all embedded in a foundation, and the upper ends of the precast piles are all fixedly connected with the bottom surface of the bearing platform. Each precast pile comprises an outer pile pipe, an inner pile column and rubber. The upper end of the outer pile pipe is provided with an opening. The lower end of the inner pile column is inserted into the outer pile pipe, and the upper end of the inner pile column extends out of the outer pile pipe and is fixedly connected with the bottom surface of the bearing platform. The rubber is arranged in the lower end of the outer pile pipe, and the upper end of the rubber is abutted against the bottom surface of the inner pile column. The application has the effect of improving the anti-seismic capacity, so that the influence of earthquakes on high-rise buildings can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of safe construction of high-rise buildings, and in particular to a vibration reduction structure for high-rise buildings and its construction method. Background Technology

[0002] High-rise buildings generally refer to buildings with a relatively large number of stories and considerable height. However, the specific definition of what constitutes a high-rise varies from country to country. In my country, high-rise buildings are defined as residential buildings with a height greater than 27 meters and non-single-story factories, warehouses, and other civil buildings with a height greater than 24 meters. High-rise buildings offer advantages such as saving urban land, shortening the development cycle of public utilities and municipal pipelines, reducing municipal investment, and accelerating urban construction. The foundations of high-rise buildings often employ raft foundations, box foundations, and pile foundations, with pile foundations (or pile foundations combined with box foundations) being the most common.

[0003] In related technologies, pile foundations mainly consist of piles and pile caps. Based on construction methods, piles can be divided into two main categories: precast piles and cast-in-place piles. Precast piles are driven into the soil using methods such as hammering, static pressure, vibration, or water jetting. Cast-in-place piles are formed by drilling holes in situ, placing a reinforcing cage in the hole, and then pouring concrete to form the pile. After the pile body is formed, a pile cap is cast on the foundation surface. The pile cap is generally made of reinforced concrete and is connected to the upper end of each pile body to form a single unit, thus forming the pile foundation. The pile body increases the connection strength between the pile foundation and the ground, while the pile cap supports the main body of the high-rise building. The combination of these two elements ensures the relatively safe use of high-rise buildings.

[0004] Among the aforementioned technologies, pile foundations mainly rely on the piles to ensure ground grip, making high-rise buildings less prone to collapse. However, since the piles are directly buried in the foundation, when an earthquake occurs, the seismic waves will directly act on the piles as they travel upwards, and then act on the high-rise building itself through the piles. This can cause the high-rise building to be subjected to significant vibrations, which has certain adverse effects and therefore needs to be improved. Summary of the Invention

[0005] The purpose of this application is to provide a seismic damping structure for high-rise buildings and its construction method, which has the effect of improving seismic resistance and reducing the impact of earthquakes on high-rise buildings.

[0006] Firstly, this application provides a high-rise building vibration reduction structure, which adopts the following technical solution.

[0007] A high-rise building vibration reduction structure includes precast piles and a pile cap. The precast piles are arranged in a rectangular array, and each precast pile is embedded in the foundation. The upper end of each precast pile is fixedly connected to the bottom surface of the pile cap. Each precast pile includes an outer pile tube, an inner pile column, and rubber. The upper end of the outer pile tube is open, and the lower end of the inner pile column is inserted into the outer pile tube. The upper end of the inner pile column extends out of the outer pile tube and is fixedly connected to the bottom surface of the pile cap. The rubber is disposed inside the lower end of the outer pile tube, and the upper end of the rubber is pressed against the bottom surface of the inner pile column.

[0008] Specifically, by utilizing the cooperation between the rubber and the outer pile tube and inner pile column, the rubber can be squeezed and deformed when the precast pile is subjected to the upward force of the seismic wave. This allows the outer pile tube and inner pile column to dissipate energy and reduce vibration through relative displacement, greatly reducing the impact of vibration. Furthermore, the rubber has a restoring force after deformation, which allows the distance between the outer pile tube and inner pile column to return to its original state, thus ensuring the normal use of the precast pile. The cooperation between the energy-dissipating and vibration-damping precast pile and the pile cap can effectively provide vibration-damping support for high-rise buildings, improving the safety of high-rise buildings.

[0009] Furthermore, a rubber supply pipe is provided on the inner pile column, with the lower end of the rubber supply pipe communicating with the bottom surface of the inner pile column, and the upper end of the rubber supply pipe being bent and communicating with the outer wall of the inner pile column. The part of the upper end of the rubber supply pipe communicating with the outer wall of the inner pile column is located above the outer pile pipe.

[0010] Specifically, after the precast piles are constructed, molten rubber can be supplied to the bottom of the outer pile pipe through the rubber supply pipe. When molten rubber is supplied to the bottom of the outer pile pipe, it can push the inner pile column upward, thereby achieving the effect of adjusting the actual height of the inner pile column and ensuring the support effect of the precast pile on the pile cap.

[0011] Furthermore, it also includes a molten rubber pumping system, which includes a colloid pump, delivery pipes, and electric heating devices. Several electric heating devices are provided, and each electric heating device is installed at the upper end of each outer pile pipe. Each outer pile pipe is a metal pipe. The colloid pump is located outside the foundation. Several delivery pipes are provided, with one end of each delivery pipe connected to the upper end of each rubber delivery pipe, and the other end of each delivery pipe connected to the colloid pump.

[0012] Specifically, an electric heating device is used to heat the outer pile pipe, allowing the rubber inside the precast pile to remelt. Then, a colloid pump is used to transport the molten rubber back into the precast pipe, or the molten rubber is extracted from the precast pipe, thereby readjusting the length of the precast pile. This allows for direct adjustment of the pile foundation after the high-rise building has been erected, ensuring the connection between the pile foundation and the ground.

[0013] Furthermore, each of the aforementioned external pile pipes includes a metal pipe and a guide head. The guide head is configured as a reinforced concrete component. The upper end of the guide head is inserted into the metal pipe and fixedly connected to the metal pipe. The lower end of the guide head is conical. The lower end of the rubber is connected to the upper end face of the guide head.

[0014] Specifically, metal tubes can be produced by extrusion molding or sheet metal winding molding, and then assembled with guide heads. Compared with the method of integral casting of metal tubes and guide heads, this method is cheaper and more efficient.

[0015] Furthermore, each of the metal tubes has several heat-conducting fins on its inner wall. The length of each heat-conducting fin extends along the axis of the metal tube. The heat-conducting fins are equidistantly arranged around the axis of the metal tube. Each of the inner piles has several guide grooves on its outer wall. Each heat-conducting fin is inserted into each guide groove.

[0016] Specifically, the heat-conducting wing plate allows the heated metal pipe to be transferred to the rubber delivery pipe more quickly, thereby heating the rubber inside the delivery pipe and enabling it to melt faster. In addition, the heat-conducting wing plate also serves as a limiting and guiding function, allowing the inner pile to move only relative to the axis of the metal pipe. Furthermore, the heat-conducting wing plate also increases the strength of the metal pipe, making it less prone to deformation.

[0017] Furthermore, each of the aforementioned glue delivery pipes is equipped with an electrically controlled three-way valve at its upper end. The first port of the electrically controlled three-way valve is connected to the upper end of the glue delivery pipe, the second port of each electrically controlled three-way valve is connected to the end of each delivery pipe away from the glue pump, and the third port of each electrically controlled three-way valve is connected to the same hydraulic pump through a water delivery pipe. The outer wall of each delivery pipe is wrapped with heat insulation cotton, and the outer side of the heat insulation cotton is also wrapped with aluminum foil.

[0018] Specifically, the use of insulation cotton and aluminum foil can provide heat insulation for the conveying pipe, preventing the molten rubber inside the pipe from solidifying too quickly. By using an electrically controlled three-way valve in conjunction with the conveying pipe and the hydraulic pump, after the length of the precast pile is adjusted, the hydraulic pump can be controlled to connect with the conveying pipe. This allows the hydraulic pump to clean the conveying pipe by pumping high-temperature water, preventing blockage caused by residual rubber inside the pipe.

[0019] Furthermore, the bottom of the foundation is provided with several inspection grooves, each inspection groove having at least one end connected to the side of the foundation. Each of the electric heating devices is evenly distributed in each inspection groove. The foundation has several settlement joints, each settlement joint being located above each inspection groove. The length direction of each settlement joint is the same as the length direction of the inspection groove. The foundation is divided into several settlement buffer platforms by the settlement joints.

[0020] Specifically, the maintenance trench facilitates the later maintenance of the electric heating device, and the settlement joints divide the foundation into several settlement buffer platforms, allowing any two adjacent settlement buffer platforms to undergo a certain settlement deformation, thereby achieving the effect of separating vibrations and further improving the vibration reduction capacity of the pile foundation.

[0021] Furthermore, steel plates are fixedly connected to the opposing sides of any two adjacent settlement buffer platforms, and viscoelastic rubber sheets are provided between any two adjacent steel plates. The two sides of each viscoelastic rubber sheet are fixedly bonded to the steel plates on both sides.

[0022] Specifically, by utilizing the combination of steel plates and viscoelastic rubber sheets placed between any two adjacent settlement buffer platforms, energy dissipation and vibration reduction effects can be achieved. Furthermore, when two adjacent settlement buffer platforms undergo settlement deformation due to vibration, the viscoelastic rubber sheets can be used to restore them to their original position.

[0023] Secondly, this application also provides a method for constructing a high-rise building vibration reduction structure, which adopts the following technical solution.

[0024] A method for constructing a seismic-resistant connection structure as described above includes the following steps: S1. Clear away debris from the ground, and then excavate the foundation pit within the planned area; S2. Drill holes at the bottom of the foundation pit to form pile holes, and then embed each precast pile into each pile hole. S3. Install the colloid pump, delivery pipe, electric heating device, hydraulic pump and water delivery pipe, and then backfill with plain soil to form a plain soil layer. The plain soil layer is above the outer pile pipe of the precast pile. All delivery pipes and water delivery pipes are buried in the plain soil layer. The colloid pump, electric heating device and hydraulic pump are all located above the plain soil layer. S4. Erect a casting form on the plain soil layer. The casting form and the surface of the plain soil layer form a casting chamber with an opening on the upper side. The upper end of the inner pile column of each precast pile is located in the casting chamber. Install the steel cage in the casting chamber and finally pour concrete. After the concrete solidifies, the pile cap can be connected to the upper end of each precast pile.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Each precast pile has the effect of energy dissipation and vibration reduction, effectively reducing the impact of seismic waves on the precast piles, so that the impact of seismic waves on high-rise buildings can be greatly reduced. 2. After the construction of high-rise buildings is completed, the length of precast piles can be adjusted by injecting molten rubber to adapt to changes in the foundation. 3. The foundation cap can adapt to changes in foundation settlement, and it can also play a certain role in energy dissipation and vibration reduction. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the high-rise building vibration reduction structure according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a precast pile according to an embodiment of this application; Figure 3 This is a schematic diagram of the arrangement of the inner pile columns according to an embodiment of this application; Figure 4 This is a schematic cross-sectional view of the external pile pipe according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the support platform according to an embodiment of this application; Figure 6 yes Figure 5 A magnified view of part A; Figure 7 This is a schematic diagram of the arrangement of the molten rubber pumping system according to an embodiment of this application.

[0027] In the diagram, 1. Precast pile; 11. Outer pile pipe; 111. Metal pipe; 112. Guide head; 113. Heat-conducting wing plate; 12. Inner pile column; 121. Fan-shaped reinforced concrete component; 122. Guide groove; 13. Rubber delivery pipe; 14. Rubber; 2. Foundation; 21. Settlement buffer platform; 22. Inspection groove; 23. Settlement joint; 24. Elastic buffer component; 241. Viscoelastic rubber sheet; 242. Steel plate; 3. Molten rubber pumping system; 31. Colloid pump; 32. Delivery pipe; 33. Electrically controlled three-way valve; 34. Water delivery pipe; 35. Hydraulic pump. Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0029] A high-rise building seismic isolation structure and its construction method, referring to Figure 1 This includes precast pile 1, pile cap 2, and molten rubber 14 pumping system ( Figure 1(Not shown in the text). Among them, several precast piles 1 are arranged in a rectangular array. Each precast pile 1 is buried in the foundation, and the length of each precast pile 1 can be adjusted. The foundation 2 is cast into the upper side of the foundation. The upper end of each precast pile 1 is fixedly connected to the bottom surface of the foundation 2. The molten rubber 14 pumping system is connected to each precast pile 1 to adjust the actual length of each precast pile 1.

[0030] Reference Figure 2 Each precast pile 1 includes an outer pile pipe 11, an inner pile column 12, a rubber supply pipe 13, and rubber 14. The upper end of the outer pile pipe 11 is open, the lower end of the inner pile column 12 is inserted into the outer pile pipe 11, the rubber supply pipe 13 is embedded in the inner pile column 12 and coaxially aligned with it, and the rubber 14 fills the lower end of the outer pile pipe 11. The lower end of the inner pile column 12 abuts against the rubber 14. The lower end of the rubber supply pipe 13 communicates with the bottom surface of the inner pile column 12, and the upper end of the rubber supply pipe 13, after bending, communicates with the outer wall of the inner pile column 12. The portion of the upper end of the rubber supply pipe 13 communicating with the outer wall of the inner pile column 12 is located above the outer pile pipe 11. Molten rubber 14 can be injected into the outer pile pipe 11 through the rubber delivery pipe 13. When the molten rubber 14 is injected into the outer pile pipe 11, it can push the outer pile out of the outer pile pipe 11. After the molten rubber 14 solidifies, the actual length of the precast pile 1 can be adjusted.

[0031] Reference Figure 2 and Figure 3 The rubber delivery pipe 13 is supported by a metal pipe 111. The inner pile column 12 includes several fan-shaped reinforced concrete components 121 arranged equidistantly around the axis of the rubber delivery pipe 13. The cross-section of each fan-shaped reinforced concrete component 121 is fan-shaped, and any two adjacent fan-shaped reinforced concrete components 121 enclose a guide groove 122. During the production of the inner pile column 12, several steel cages are first welded to the outer wall of the rubber delivery pipe 13. Then, several casting molds are installed on the outer wall of the rubber delivery pipe 13, with each steel cage located inside its respective casting mold. Finally, concrete is poured, and after the concrete solidifies, the casting molds are removed to form a reinforced concrete component fixedly connected to the outer wall of the inner pile column 12.

[0032] Reference Figure 2 and Figure 4The outer pile pipe 11 includes a metal pipe 111 and a guide head 112. The guide head 112 is a reinforced concrete component, with its upper end inserted into the lower end of the metal pipe 111. The portion of the guide head 112 inserted into the metal pipe 111 is fixedly connected to the metal pipe 111, and the lower end of the guide head 112 is conical. Several heat-conducting fins 113 are circumferentially and equidistantly arranged around the axis of the metal pipe 111 on the inner wall of the metal pipe 111, with each heat-conducting fin 113 extending along the axis of the metal pipe 111. When the inner pile column 12 is connected to the outer pile pipe 11, each heat-conducting fin 113 is inserted into a guide groove 122.

[0033] Reference Figure 1 and Figure 5 The bottom of the foundation 2 is provided with several maintenance grooves 22 arranged along the length of the foundation 2. The length of each maintenance groove 22 is arranged along the width of the foundation 2, and at least one end of each maintenance groove 22 is connected to the side of the foundation 2. The foundation 2 has several settlement joints 23, each settlement joint 23 is located above each maintenance groove 22, and the length of the settlement joint 23 is the same as the length of the maintenance groove 22. The foundation 2 is divided into several independent settlement buffer platforms 21 by the settlement joints 23.

[0034] Reference Figure 5 and Figure 6 Each of the settlement joints 23 is provided with an elastic buffer assembly 24. Each elastic buffer assembly 24 includes a steel plate 242 and a viscoelastic rubber sheet 14. There are two steel plates 242, and the opposite sides of the two steel plates 242 are fixedly connected to the opposite sides of any two adjacent settlement buffer platforms 21. The viscoelastic rubber sheet 14 is disposed between the two steel plates 242, and the two sides of the viscoelastic rubber sheet 14 are fixedly bonded to the two steel plates 242.

[0035] Reference Figure 7 The molten rubber 14 pumping system includes a colloid pump 31, a delivery pipe 32, an electric heating device (not shown in the figure), an electrically controlled three-way valve 33, a water delivery pipe 34, and a hydraulic pump 35. Several electric heating devices are provided, and each electric heating device is installed at the upper end of each outer pile pipe 11 to heat the corresponding outer pile pipe 11. The electric heating devices are evenly distributed in each maintenance groove 22. Several electrically controlled three-way valves 33 are provided, and each electrically controlled three-way valve 33 is installed at the upper end of the inner pile column 12 of each precast pile 1. Each electrically controlled three-way valve 33 is used to control the connection between the delivery pipe 32 and the rubber delivery pipe 13, or the connection between the delivery pipe 32 and the water delivery pipe 34.

[0036] Reference Figure 7A colloid pump 31 is used to pump molten rubber 14, and a hydraulic pump 35 is used to pump high-temperature hot water. Both the colloid pump 31 and the hydraulic pump 35 are located outside the support platform 2. Several delivery pipes 32 are provided, one end of each delivery pipe 32 is connected to one interface of each electrically controlled three-way valve 33, and the other end of each delivery pipe 32 is connected to the colloid pump 31. Several water delivery pipes 34 are provided, one end of each water delivery pipe 34 is connected to one interface of each electrically controlled three-way valve 33, and the other end of each water delivery pipe 34 is connected to the hydraulic pump 35.

[0037] The outer wall of the conveying pipe 32 is wrapped with insulation cotton, and aluminum foil is wrapped on the outside of each layer of insulation cotton.

[0038] The working principle of this application embodiment: By utilizing the cooperation between the rubber 14 and the outer pile pipe 11 and the inner pile column 12, when the precast pile 1 is subjected to the upward force of the seismic wave, the rubber 14 can be squeezed and deformed, thereby allowing the outer pile pipe 11 and the inner pile column 12 to achieve energy dissipation and vibration reduction through relative displacement, greatly reducing the impact of vibration. Moreover, the rubber 14 has a restoring force after deformation, which can restore the distance between the outer pile pipe 11 and the inner pile column 12 to its original state, thus ensuring the normal use of the precast pile 1. By utilizing the cooperation between the energy-dissipating and vibration-reducing precast pile 1 and the pile cap 2, the vibration reduction support effect of high-rise buildings can be effectively provided, improving the safety of high-rise buildings.

[0039] This application also discloses a construction method for the seismic connection structure as described above, comprising the following steps: S1. Clear away debris from the ground, and then excavate the foundation pit within the planned area; S2. Drill holes at the bottom of the foundation pit to form pile holes, and then embed each precast pile 1 into each pile hole. S3. Install the colloid pump 31, delivery pipe 32, electric heating device, hydraulic pump 35 and water delivery pipe 34, and then backfill with plain soil to form a plain soil layer. The plain soil layer covers the outer pile pipe 11 of the precast pile 1. Each delivery pipe 32 and water delivery pipe 34 is buried in the plain soil layer. The colloid pump 31, electric heating device and hydraulic pump 35 are all located above the plain soil layer. S4. Erect a casting template on the plain soil layer. The casting template and the surface of the plain soil layer form a casting chamber with an upper opening. The upper end of the inner pile column 12 of each precast pile 1 is located in the casting chamber. Install the steel cage in the casting chamber and finally pour concrete. After the concrete solidifies, the pile cap 2 can be connected to the upper end of each precast pile 1.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibration damping structure for high-rise buildings, characterized in that, The system includes precast piles (1) and a pile cap (2). Several precast piles (1) are arranged in a rectangular array. Each precast pile (1) is embedded in the foundation, and the upper end of each precast pile (1) is fixedly connected to the bottom surface of the pile cap (2). Each precast pile (1) includes an outer pile tube, an inner pile column (12), and a rubber (14). The upper end of the outer pile tube is open, and the lower end of the inner pile column (12) is inserted into the outer pile tube. The upper end of the inner pile column (12) extends out of the outer pile tube and is fixedly connected to the bottom surface of the pile cap (2). The rubber (14) is located inside the lower end of the outer pile tube, and the upper end of the rubber (14) abuts against the bottom surface of the inner pile column (12). A rubber supply pipe (13) is coaxially arranged on the inner pile column (12). The lower end of the rubber supply pipe (13) communicates with the bottom surface of the inner pile column (12), and the upper end of the rubber supply pipe (13) is bent and communicates with the outer wall of the inner pile column (12). The part of the upper end of the rubber supply pipe (13) communicating with the outer wall of the inner pile column (12) is located above the outer pile pipe. It also includes a molten rubber pumping system, which includes a colloid pump, a delivery pipe (32) and an electric heating device. Several electric heating devices are provided, and each electric heating device is installed at the upper end of each outer pile pipe. Each outer pile pipe is a metal pipe (111). The colloid pump is located outside the foundation (2). Several delivery pipes (32) are provided. One end of each delivery pipe (32) is connected to the upper end of each rubber delivery pipe (13), and the other end of each delivery pipe (32) is connected to the colloid pump.

2. The vibration damping structure for high-rise buildings according to claim 1, characterized in that, Each of the aforementioned external pile pipes includes a metal pipe (111) and a guide head (112). The guide head (112) is a reinforced concrete component. The upper end of the guide head (112) is inserted into the metal pipe (111) and fixedly connected to the metal pipe (111). The lower end of the guide head (112) is conical. The lower end of the rubber (14) is connected to the upper end face of the guide head (112).

3. The vibration damping structure for high-rise buildings according to claim 2, characterized in that, Each of the metal tubes (111) has a number of heat-conducting fins (113) on its inner wall. The length of each heat-conducting fin (113) extends along the axis of the metal tube (111). The heat-conducting fins (113) are arranged equidistantly around the axis of the metal tube (111). Each of the inner piles (12) has a number of guide grooves (122) on its outer wall. Each heat-conducting fin (113) is inserted into each guide groove (122).

4. The vibration damping structure for high-rise buildings according to claim 1, characterized in that, Each of the aforementioned glue delivery pipes (13) is equipped with an electrically controlled three-way valve (33) at its upper end. The first port of the electrically controlled three-way valve (33) is connected to the upper end of the glue delivery pipe (13). The second port of each of the aforementioned electrically controlled three-way valves (33) is connected to the end of each delivery pipe (32) away from the glue pump. The third port of each of the aforementioned electrically controlled three-way valves (33) is connected to the same hydraulic pump (35) through a water delivery pipe (34). The outer wall of each of the aforementioned delivery pipes (32) is wrapped with heat insulation cotton, and the outer side of the heat insulation cotton is also wrapped with aluminum foil.

5. The vibration damping structure for high-rise buildings according to claim 4, characterized in that, The bottom of the platform (2) is provided with a number of inspection grooves (22), and at least one end of each inspection groove (22) is connected to the side of the platform (2). Each of the electric heating devices is evenly distributed in each inspection groove (22). The platform (2) has a number of settlement joints (23), and each settlement joint (23) is located above each inspection groove (22). The length direction of each settlement joint (23) is the same as the length direction of the inspection groove (22). The platform (2) is divided by each settlement joint (23) to form a number of settlement buffer platforms (21).

6. The vibration damping structure for high-rise buildings according to claim 5, characterized in that, Steel plates (242) are fixedly connected to the opposite side of any two adjacent settling buffer platforms (21), and viscoelastic rubber sheets are provided between any two adjacent steel plates (242). The two sides of each viscoelastic rubber sheet are fixedly bonded to the steel plates (242) on both sides respectively.

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