Damping pile foundation
By introducing shock absorbing components into the pile foundation, the vibration energy is consumed, and the problem of cracks and fractures occurring when the pile column and the support are shaken by the formation are solved, achieving effective shock absorbing effects.
Patent Information
- Application Number
- CN202421904791.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-07
AI Technical Summary
When existing pile foundations are shaken by formations, the vibration energy will be transmitted to the pile column and the bearing, causing cracks to occur at the contact positions between the pile column and the bearing, and even causing the ends of the pile column to break.
The shock-absorbing pile foundation is used to consume vibration energy by setting up shock absorbing components between the pile column and the support, including a prefabricated cavity shell and a loose mattress layer, or components such as shock absorbing shell, glue ring, energy-consuming block and annular airbag, to consume vibration energy and reduce the impact of vibration on the support.
It effectively weakens the impact of vibration energy on the bearing, slows down the force of the end of the pile column on the bearing, thereby avoiding cracks and breaks between the pile column and the bearing, and achieving shock absorption effect.
Smart Images
Figure CN222878736U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building piles, and in particular to a shock-absorbing pile foundation. Background Art
[0002] Pile foundation is a foundation composed of pile columns, soil and pedestals, referred to as pile foundation. The pedestal is the foundation of the building. If the pile body is completely buried in the soil and the bottom of the pedestal is in contact with the soil, it is called a low pedestal pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the pedestal is above the ground, it is called a high pedestal pile foundation.
[0003] At present, the cap is usually made of a formwork built around the upper end of the pile and poured with concrete. That is, the upper end of the pile is prefabricated in concrete, and the vibrations generated in the stratum due to geological movements are transmitted to the pile, and the pile transmits the vibrations to the cap through the pile end, resulting in cracks at the contact position between the pile and the cap, and in severe cases, the end of the pile may break, which is insufficient. Utility Model Content
[0004] In order to improve the problem that vibration may cause cracks to form at the contact position between the pile column and the cap, the present application provides a shock-absorbing pile foundation.
[0005] The shock-absorbing pile foundation provided in this application adopts the following technical solution:
[0006] A shock-absorbing pile foundation comprises a pile column and a cap, wherein the cap is arranged at the end of the pile column, and a shock-absorbing component is arranged between the pile column and the cap, and the shock-absorbing component is used to consume the vibration energy between the pile column and the cap.
[0007] By adopting the above technical solution, after the vibration energy in the local stratum is transmitted to the pile column, the shock-absorbing component consumes the vibration energy transmitted from the pile column to the base, thereby reducing the impact of the vibration energy on the base, thereby achieving a shock-absorbing effect.
[0008] Optionally, the shock-absorbing assembly includes a prefabricated cavity shell disposed on the base, the interior of the prefabricated cavity shell is hollow and the bottom is open, the prefabricated cavity shell covers the end of the pile column, and the cavity between the prefabricated cavity shell and the pile column is filled with a loose mattress layer.
[0009] By adopting the above technical solution, when the vibration in the local stratum is transmitted to the pile column, the pile column vibrates and squeezes the cushion layer. Under the shell constraint of the prefabricated cavity shell, the cushion layer is squeezed and relatively displaced. The relative displacement of the cushion layer consumes the vibration energy on the pile column, reduces the force of the pile column end on the pedestal, and thus achieves the effect of shock absorption.
[0010] Optionally, the mattress layer is wrapped around the ends of the piles.
[0011] By adopting the above technical solution, after the ground vibrations in different directions are transmitted to the pile column, they can be wrapped in the cushion layer at the end of the pile column to achieve a shock-absorbing effect, which is beneficial to improving the protective effect of the cushion layer on the foundation.
[0012] Optionally, the shock-absorbing assembly includes a shock-absorbing shell arranged on the base, the interior of the shock-absorbing shell is hollow and the bottom is open, the shock-absorbing shell covers the end of the pile column, the end of the pile column is provided with a rubber ring, and the outer ring of the rubber ring is arranged at the open end of the shock-absorbing shell.
[0013] By adopting the above technical solution, when the vibration of the local stratum is transmitted to the pile column, the vibration on the pile column is transmitted to the rubber ring. Under the constraint of the shock-absorbing shell, the rubber ring is squeezed by the pile column and deformed. The rubber ring consumes the vibration energy that penetrates the pile column through deformation, thereby achieving the shock-absorbing effect.
[0014] Optionally, an energy-absorbing block is slidably arranged on the vertical inner wall of the shock-absorbing shell, a support plate is arranged on the shock-absorbing shell at the bottom of the energy-absorbing block, a first compression spring is supported between the energy-absorbing block and the support plate, a second compression spring is supported between the pile column and the energy-absorbing block, a reversing wheel is rotatably arranged at the top of the shock-absorbing shell, a pull rope is wound around the reversing wheel, one end of the pull rope is arranged on the energy-absorbing block, and the other end is arranged on the pile column.
[0015] By adopting the above technical solution, when the pile column generates horizontal vibration, the pile column drives the energy-absorbing block to slide through the pull rope. Under the supporting and pressing action of the second compression spring, the energy-absorbing block is pressed against the inner wall of the shock-absorbing shell. The friction between the energy-absorbing block and the shock-absorbing shell consumes the tension of the pull rope. At the same time, the first compression spring is deformed to further consume the vibration energy on the pile column. When the pile column vibrates vertically, the first compression spring and the second compression spring have a downward pulling force on the pile column to prevent the pile column from vibrating and displacing in the vertical direction.
[0016] Optionally, a plurality of energy absorbing blocks are provided on the shock absorbing shell, and the plurality of energy absorbing blocks are evenly arranged along the circumferential direction of the axis of the pile column.
[0017] By adopting the above technical solution, the vibration force transmitted to the pile column in each direction can be reduced in amplitude by the energy-absorbing blocks in the corresponding direction. At the same time, multiple energy-absorbing blocks can quickly consume the vibration energy transmitted to the pile column. At the same time, multiple energy-absorbing blocks play a role in aligning and positioning the concentric installation of the shock-absorbing shell and the pile column through the pull ropes thereon.
[0018] Optionally, an annular airbag is provided on the shock-absorbing shell between the rubber ring and the support plate, the annular airbag is sleeved on the pile column, and limiting rings are provided on the top and bottom of the annular airbag.
[0019] By adopting the above technical solution, the annular airbag reduces the pressure of the vibration of the pile column on the shock-absorbing shell, and plays a buffering role on the vibration of the pile column.
[0020] Optionally, an inner column is provided on the top of the pile column, an outer tube is slidably sleeved on the inner column, a sealing ring is sleeved on the inner column, the sealing ring is tightly attached to the circumferential inner wall of the outer tube, one end of the outer tube facing away from the inner column abuts against the shock absorbing shell, and a ventilation pipe is connected between the outer tube and the annular airbag.
[0021] By adopting the above technical solution, when the pile column vibrates vertically, the pile column drives the inner column to move vertically upward, and the air pressure in the sealed pressure chamber formed between the outer tube and the inner column increases, which is transmitted to the annular airbag through the ventilation pipe. At the same time, under the restricting action of the restricting ring, the annular airbag expands and deforms in the lateral direction, which slows down the vibration displacement of the pile column in the lateral direction. At the same time, the reaction force of the cavity gas pressure between the outer tube and the inner column hinders the vibration displacement of the pile column in the vertical direction.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. After the vibration energy in the stratum is transmitted to the pile column, the shock-absorbing assembly consumes the vibration energy transmitted from the pile column to the cap, thereby reducing the impact of the vibration energy on the cap, thereby achieving the effect of shock absorption;
[0024] 2. When the vibration in the stratum is transmitted to the pile column, the pile column vibrates and squeezes the cushion layer. Under the constraint of the shell of the prefabricated cavity shell, the cushion layer is squeezed and relatively displaced. The relative displacement of the cushion layer consumes the vibration energy on the pile column, slowing down the force of the pile column end on the cap, thereby achieving the effect of shock absorption;
[0025] 3. When the pile column vibrates in the horizontal direction, the pile column drives the energy-absorbing block to slide through the pull rope. Under the supporting and pressing action of the second compression spring, the energy-absorbing block is pressed against the inner wall of the shock-absorbing shell. The friction between the energy-absorbing block and the shock-absorbing shell consumes the tension of the pull rope. At the same time, the first compression spring is deformed to further consume the vibration energy on the pile column. When the pile column vibrates vertically, the first compression spring and the second compression spring exert a downward pulling force on the pile column to prevent the pile column from vibrating and displacing in the vertical direction.
[0026] 4. When the pile column vibrates vertically, the pile column drives the inner column to move vertically upward, and the air pressure in the sealed pressure chamber formed between the outer tube and the inner column increases, which is transmitted to the annular airbag through the vent pipe. At the same time, under the restricting action of the restricting ring, the annular airbag expands and deforms in the lateral direction, which slows down the vibration displacement of the pile column in the lateral direction. At the same time, the reaction force of the cavity gas pressure between the outer tube and the inner column hinders the vibration displacement of the pile column in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural diagram of Example 1 of the present application.
[0028] Figure 2 It is a cross-sectional view showing the positional relationship among the shock absorbing shell, the energy dissipation block and the annular airbag in Example 2 of the present application.
[0029] Explanation of the reference numerals in the accompanying drawings: 1. Pile column; 2. Capping platform; 3. Shock-absorbing assembly; 31. Prefabricated cavity shell; 32. Mattress layer; 33. Shock-absorbing shell; 34. Rubber ring; 4. Energy absorption block; 5. Support plate; 6. First compression spring; 7. Second compression spring; 8. Reversing wheel; 9. Pull rope; 10. Annular airbag; 11. Limiting ring; 12. Inner column; 13. Outer cylinder; 14. Sealing ring; 15. Ventilation pipe; 16. Pile support; 17. Limiting plate. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-2 This application is described in further detail.
[0031] The embodiment of the present application discloses a shock-absorbing pile foundation.
[0032] Example 1
[0033] Reference Figure 1 A shock-absorbing pile foundation includes a pile column 1 and a cap 2. A pile support 16 is integrally formed on the pile column 1. The cap 2 is cast by concrete. The cap 2 is arranged at the end of the pile column 1. A shock-absorbing component 3 is arranged between the pile column 1 and the cap 2. The shock-absorbing component 3 is used to consume the vibration energy between the pile column 1 and the cap 2.
[0034] Reference Figure 1 The shock-absorbing assembly 3 includes a prefabricated cavity shell 31 prefabricated at the bottom of the base 2. The interior of the prefabricated cavity shell 31 is hollow and the bottom is open. The prefabricated cavity shell 31 is used to cover the end of the pile column 1. The cavity between the prefabricated cavity shell 31 and the pile column 1 is filled with a loose cushion layer 32. The cushion layer 32 can be made of sand and gravel in the prior art. The cushion layer 32 is wrapped around the end of the pile column 1.
[0035] The implementation principle of Example 1 is as follows: after the vibration in the stratum is transmitted to the pile column 1, the end of the pile column 1 vibrates and squeezes the cushion layer 32. Under the shell constraint of the prefabricated cavity shell 31, the cushion layer 32 is squeezed and relatively displaced. The relative displacement of the cushion layer 32 consumes the vibration energy transmitted from the pile column 1, thereby reducing the force of the vibration at the end of the pile column 1 on the base 2, thereby achieving a shock-absorbing effect.
[0036] Example 2
[0037] refer to Figure 2The difference between this embodiment and the embodiment 1 is that the shock absorbing assembly 3 includes a shock absorbing shell 33 prefabricated at the bottom of the base 2, the interior of the shock absorbing shell 33 is hollow and the bottom is open, the shock absorbing shell 33 covers the end of the pile column 1, and the end of the pile column 1 is sleeved with a rubber ring 34, the inner ring part of the rubber ring 34 is bonded to the pile support 16, the middle part of the cross section of the rubber ring 34 has wrinkles, and the outer ring part of the rubber ring 34 is bonded to the open end of the shock absorbing shell 33.
[0038] Reference Figure 2 A plurality of energy absorbing blocks 4 are slidingly arranged on the vertical inner wall of the shock absorbing shell 33. The plurality of energy absorbing blocks 4 are evenly distributed circumferentially along the axis of the pile column 1. A plurality of support plates 5 are welded on the shock absorbing shell 33 at the bottom of the energy absorbing blocks 4. The support plates 5 correspond to the energy absorbing blocks 4 one by one. A first compression spring 6 is provided between the energy absorbing blocks 4 and the support plates 5.
[0039] Reference Figure 2 A second compression spring 7 is supported between the pile column 1 and the energy absorbing block 4, and the second compression spring 7 presses the energy absorbing block 4 against the inner wall of the shock absorbing shell 33. A plurality of reversing wheels 8 are rotatably connected to the top of the shock absorbing shell 33. The reversing wheels 8 correspond to the energy absorbing blocks 4 one by one. A pull rope 9 is wound around the reversing wheels 8. One end of the pull rope 9 is tied to the corresponding energy absorbing block 4, and the other end is tied to the top of the pile column 1.
[0040] Reference Figure 2 An annular airbag 10 is bonded to the shock-absorbing shell 33 between the rubber ring 34 and the support plate 5. The annular airbag 10 is sleeved on the pile column 1. The top and bottom of the annular airbag 10 are coaxially bonded with a limiting ring 11. There is a distance between the limiting ring 11 and the pile column 1. A limiting plate 17 is welded on the shock-absorbing shell 33.
[0041] Reference Figure 2 The limit plate 17 is located on the side of the limit ring 11 facing away from the annular airbag 10. An inner column 12 is coaxially welded to the top of the pile column 1. An outer cylinder 13 with a hollow interior and an open bottom is slidably sleeved on the inner column 12. A sealing ring 14 is sleeved on the inner column 12. The sealing ring 14 is tightly attached to the circumferential inner wall of the outer cylinder 13. One end of the outer cylinder 13 facing away from the inner column 12 abuts against the shock-absorbing shell 33. A ventilation pipe 15 is connected between the outer cylinder 13 and the annular airbag 10.
[0042] The implementation principle of Example 2 is as follows: when the vibration is transmitted to the pile column 1, it is divided into lateral vibration force and vertical vibration force. The lateral vibration force on the pile column 1 will be transmitted to the rubber ring 34. Under the restraint of the shock-absorbing shell 33, the rubber ring 34 is squeezed by the pile column 1 and deformed.
[0043] At the same time, the pile column 1 will pull the pull rope 9, and the pull rope 9 will drive the energy absorbing block 4 to slide vertically through the reversing wheel 8. Under the supporting and pressing action of the second compression spring 7, the energy absorbing block 4 will rub against the vertical inner wall of the shock absorbing shell 33. At the same time, the first compression spring 6 will deform, and the pile column 1 will drive the outer cylinder 13 through the inner column 12. The outer cylinder 13 will rub against the top inner wall of the shock absorbing shell 33, and the combined force of the first compression spring 6 and the second compression spring 7 will pull the pile column 1 to move downward, thereby hindering the vertical movement of the pile column 1.
[0044] The vertical vibration force on the pile column 1 will squeeze the outer tube 13 through the inner column 12, and the gas in the cavity between the inner column 12 and the outer tube 13 will be compressed. The compressed gas flows into the annular airbag 10 through the vent pipe 15. The annular airbag 10 expands laterally under the restraint of the limiting ring 11 and the limiting plate 17. The laterally expanded annular airbag 10 hinders the movement caused by the lateral vibration of the pile column 1.
[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A shock-absorbing pile foundation, comprising a pile column (1) and a cap (2), wherein the cap (2) is arranged at the end of the pile column (1), characterized in that: A shock absorbing assembly (3) is arranged between the pile column (1) and the cap (2). The shock absorbing assembly (3) is used to consume the vibration energy between the pile column (1) and the cap (2). The shock absorbing assembly (3) comprises a shock absorbing shell (33) arranged on the cap (2). The interior of the shock absorbing shell (33) is hollow and the bottom is open. The shock absorbing shell (33) covers the end of the pile column (1). The end of the pile column (1) is sleeved with a rubber ring (34). The outer ring of the rubber ring (34) is arranged at the open end of the shock absorbing shell (33).
2. A shock-absorbing pile foundation according to claim 1, characterized in that: An energy-absorbing block (4) is slidably arranged on the vertical inner wall of the shock-absorbing shell (33); a support plate (5) is arranged on the shock-absorbing shell (33) at the bottom of the energy-absorbing block (4); a first compression spring (6) is supported between the energy-absorbing block (4) and the support plate (5); a second compression spring (7) is supported between the pile column (1) and the energy-absorbing block (4); a reversing wheel (8) is rotatably arranged at the top of the shock-absorbing shell (33); a pull rope (9) is wound around the reversing wheel (8); one end of the pull rope (9) is arranged on the energy-absorbing block (4), and the other end is arranged on the pile column (1).
3. A shock-absorbing pile foundation according to claim 2, characterized in that: A plurality of the energy absorbing blocks (4) are arranged on the shock absorbing shell (33), and the plurality of the energy absorbing blocks (4) are evenly arranged along the circumferential direction of the axis of the pile column (1).
4. A shock-absorbing pile foundation according to claim 2, characterized in that: An annular airbag (10) is provided on the shock-absorbing shell (33) between the rubber ring (34) and the support plate (5); the annular airbag (10) is sleeved on the pile column (1); and limiting rings (11) are provided on the top and bottom of the annular airbag (10).
5. A shock-absorbing pile foundation according to claim 4, characterized in that: An inner column (12) is arranged at the top of the pile column (1), an outer tube (13) is slidably sleeved on the inner column (12), a sealing ring (14) is sleeved on the inner column (12), the sealing ring (14) is tightly attached to the circumferential inner wall of the outer tube (13), one end of the outer tube (13) facing away from the inner column (12) abuts against the shock-absorbing shell (33), and a ventilation pipe (15) is connected between the outer tube (13) and the annular airbag (10).