Damping pile foundation

Abstract

The utility model relates to the technical field of building pile foundations, in particular to a damping pile foundation which comprises a pile column and a bearing platform, a reinforcement cage is pre-buried in the pile column, a pile support is arranged on the pile column, a cover shell with the hollow interior and the open bottom is arranged on the bearing platform, the top of the pile column is located in the cover shell, and a damping assembly is arranged between the cover shell and the pile column. The damping assembly is used for absorbing seismic waves transmitted on the pile column, the damping assembly comprises a rubber isolation layer arranged on the top of the pile column and rubber damping blocks arranged on the pile support, the rubber isolation layer is used for abutting against the inner top wall of the housing, and the rubber damping blocks are distributed on the periphery of the pile column and abut against the inner side wall of the housing. The anti-seismic pile foundation has the effect of improving the anti-seismic capacity of the pile foundation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building pile foundation, in particular to a shock absorption pile foundation. BACKGROUND

[0002] ‌Pile foundation is a deep foundation composed of piles and pile caps (referred to as caps) connected to the top of the piles, or a single pile foundation connected by columns and piles. Pile foundation can be divided into low-cap pile foundation and high-cap pile foundation. Low-cap pile foundation refers to the pile body being completely buried in the soil, and the bottom surface of the cap being in contact with the soil; while high-cap pile foundation refers to the upper part of the pile being exposed to the ground, and the bottom of the cap being above the ground.

[0003] At present, the common pile foundation is usually formed by pouring a cap structure at the connection of the pile top through steel bars, so that the connection pile and the cap form a whole. Although this improves the tensile strength of the cap, when the seismic wave generated by the earthquake is transmitted to the connection pile, due to the pouring relationship between the connection pile and the cap, and the connection pile is usually long, the force of the seismic wave on the connection pile will be concentrated on the connection part of the connection pile and the cap, causing cracks in the connection part of the connection pile and the cap, and even causing the connection pile to break, thereby affecting the safety of the building on the pile foundation. CONTENT OF THE INVENTION

[0004] In order to improve the problem that the connection part of the connection pile and the cap is easily damaged by the seismic wave, the present application provides a shock absorption pile foundation.

[0005] The shock absorption pile foundation provided by the present application adopts the following technical scheme:

[0006] A shock absorption pile foundation, comprising a pile column and a cap, a steel cage is pre-buried in the pile column, a pile support is arranged on the pile column, a cover with a hollow interior and an open bottom is arranged on the cap, the top of the pile column is located in the cover, and a shock absorption assembly is arranged between the cover and the pile column, the shock absorption assembly being used to absorb the seismic wave transmitted on the pile column.

[0007] By adopting the above technical scheme, when the seismic wave is transmitted to the pile column, the shock absorption assembly absorbs the seismic wave on the pile column, and the pile column and the cap are arranged in a split body, which greatly reduces the force of the seismic wave transmitted from the pile column to the cap, thereby reducing the possibility of cracks or even breakage of the connection position of the pile column and the cap due to the seismic wave. In addition, the top of the pile column is located in the cover, which reduces the possibility of mutual separation of the pile column and the cap in the horizontal direction, and is beneficial to improve the safety of the building on the cap.

[0008] Optionally, the damping assembly comprises a rubber isolation layer arranged on the top of the pile and rubber damping blocks arranged on the pile support, the rubber isolation layer is used to abut against the inner top wall of the cover shell, and the rubber damping blocks are distributed around the pile and abut against the inner side wall of the cover shell.

[0009] By adopting the technical scheme, when the seismic wave is transmitted to the pile, the pile vibrates, the vibration makes the rubber damping blocks around the pile deform, the deformed rubber damping blocks absorb the seismic wave energy from the pile, the restoring force of the rubber damping blocks forces the cover shell to drive the pile cap to reset, and the rubber isolation layer absorbs the vibration energy from the vertical direction of the pile by deforming, thereby reducing the possibility of rupture at the connection position between the pile and the pile cap.

[0010] Optionally, a plurality of anchor bars are arranged on the cover shell and embedded in the pile cap.

[0011] By adopting the technical scheme, the structural strength between the cover shell and the pile cap can be improved.

[0012] Optionally, a mounting plate is arranged on the pile support between two adjacent rubber damping blocks, a buffer plate is arranged on the rubber damping block, and a gas spring is connected between the mounting plate and the buffer plate.

[0013] By adopting the technical scheme, when seismic waves of different directions are transmitted to the pile, the pile vibrates horizontally in the corresponding direction, the vibration of the pile makes the rubber damping blocks deform, the deformed rubber damping blocks press the gas spring through the buffer plate, the reaction force of the gas spring weakens the vibration energy from the rubber damping blocks, and the cooperation of the plurality of gas springs helps to slow down the sharp deformation of the rubber damping blocks.

[0014] Optionally, an internal hollow tension cylinder is connected to the mounting plate, an end plate is slidably arranged in the tension cylinder, a tension rod is coaxially arranged on the end plate, the tension rod slides out of the tension cylinder, one end of the tension rod sliding out of the tension cylinder is connected to the inner top of the cover shell, and a tension compression spring is arranged between the side of the end plate facing the inner top of the cover shell and the inner side wall of the tension cylinder.

[0015] By adopting the technical scheme, the seismic wave energy in the vertical direction of the pile makes the rubber isolation layer deform, and at the same time makes the tension rod drive the end plate to press the tension compression spring, the tension compression spring deforms, the reaction force of the tension compression spring hinders the vibration in the vertical direction of the pile, and reduces the displacement between the cover shell and the top of the pile.

[0016] Optionally, a surrounding frame is arranged on the pile support, and a sealing rubber strip is arranged between the surrounding frame and the bottom of the pile cap.

[0017] By adopting the technical scheme, the influence of the soil on the components such as the gas spring is reduced, and the possibility of rust of the components such as the gas spring is reduced.

[0018] Optionally, the pile column comprises a pole top, a pole body and a pole tip, the pile support is arranged on the pole top, and a connecting piece is arranged between the pole top, the pole body and the pole tip, and the connecting piece is used for fixing the pole top, the pole body and the pole tip together.

[0019] By adopting the technical scheme, the split assembly design is adopted, the transportation of the pile column is facilitated, and the transportation cost is reduced.

[0020] Optionally, the connecting piece comprises a convex plate and a concave plate arranged on two ends of the pole body and matched with each other, the pole top is provided with the convex plate matched with the concave plate on the pole body, the pole tip is provided with the concave plate matched with the convex plate on the pole body, the convex plate is provided with a plug column, the plug column is coaxially provided with a plug cone, the diameter of the plug cone gradually decreases along the direction from the plug column to the plug cone, the maximum diameter of the plug cone is greater than the diameter of the plug column, the concave plate is provided with a plug slot for plug connection of the plug cone, the plug slot is slidably provided with a locking block, the side of the locking block facing the plug cone is provided with a guide inclined surface, the guide inclined surface is used for abutting and slidingly matching with the conical surface of the plug cone, the concave plate is provided with a sliding groove for sliding of the locking block, and a locking compression spring is supported between the locking block and the inner side wall of the plug slot.

[0021] By adopting the technical scheme, the worker hoists the pole body to the top of the pole tip through the hoisting equipment, the plug cone on the convex plate gradually inserts into the plug slot on the concave plate, the plug cone pushes the guide inclined surface on the locking block, the locking compression spring is deformed, and the locking block abuts on the plug column until the locking compression spring restores the deformation, so that the assembly of the pole body and the pole tip is completed, the worker repeatedly operates to install a plurality of pole bodies according to the design depth of the pile column, and finally installs the pole top, so as to adapt to the construction requirements of the pile column with different depths.

[0022] Optionally, the pole top, the pole body and the pole tip are all provided with a waterproof rubber ring, and the convex plate and the concave plate are all in the ring of the waterproof rubber ring.

[0023] By adopting the technical scheme, the waterproof rubber ring is beneficial to reduce the possibility of corrosion of the components on the convex plate and the concave plate.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. When the seismic wave is transmitted to the pile, the shock-absorbing assembly absorbs the seismic wave on the pile, and the pile and the pile cap are arranged separately, which greatly reduces the force of the seismic wave transmitted from the pile to the pile cap, thereby reducing the possibility of cracks or even rupture of the connection position of the pile and the pile cap due to the seismic wave, and the top of the pile is located in the shell, which reduces the possibility of mutual separation of the pile and the pile cap in the horizontal direction, and is beneficial to improve the safety of the building on the pile cap;

[0026] 2. When the seismic wave is transmitted to the pile, the pile vibrates, the vibration causes the rubber shock-absorbing block around the pile to deform, the deformed rubber shock-absorbing block absorbs the seismic wave energy from the pile, and the restoring force of the rubber shock-absorbing block forces the shell to drive the pile cap to reset, and the rubber isolation layer absorbs the vibration energy from the vertical direction of the pile, thereby reducing the possibility of rupture of the connection position between the pile and the pile cap;

[0027] 3. The worker hoists the rod body to the top of the rod tip through the hoisting equipment, and as the insertion cone on the convex plate gradually inserts into the insertion slot on the concave plate, the insertion cone pushes the guide inclined surface on the locking block, the locking compression spring deforms, and the locking block abuts on the insertion column, at this time the locking compression spring restores the deformation, thereby completing the assembly of the rod body and the rod tip. According to the design depth of the pile, the worker repeats the operation to install multiple rod bodies, and finally installs the rod top, so as to adapt to the construction requirements of piles of different depths. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of an embodiment of the application.

[0029] Figure 2 is a sectional view of the position relationship of the pile cap, the rubber shock-absorbing block and the rod top in the embodiment of the application.

[0030] Figure 3 is a structural schematic diagram of the position relationship of the mounting plate, the buffer plate and the gas spring in the embodiment of the application.

[0031] Figure 4 is a sectional view of the position relationship of the tension rod, the tension compression spring and the tension cylinder in the embodiment of the application.

[0032] Figure 5 is Figure 2 is an enlarged view of part A in

[0033] Explanation of reference signs: 1, pile column; 101, pole top; 102, pole body; 103, pole tip; 2, pile cap; 3, steel reinforcement cage; 4, pile support; 5, cover shell; 6, shock absorption assembly; 61, rubber isolation layer; 62, rubber shock absorption block; 7, anchor bar; 8, mounting plate; 9, buffer plate; 10, gas spring; 11, tension cylinder; 12, end plate; 13, tension rod; 14, tension compression spring; 15, coaming frame; 16, sealing rubber strip; 17, connecting piece; 171, convex plate; 172, concave plate; 173, insertion column; 174, insertion cone; 175, insertion slot; 176, locking block; 177, guide inclined surface; 178, sliding groove; 179, locking compression spring; 18, waterproof rubber ring; 19, steel backing plate.

[0034] Specific implementation occurs

[0035] The following will be combined with the accompanying Figures 1-5 Further detailed description is made to the present application.

[0036] The present application discloses a shock absorption pile foundation.

[0037] Referring to Figure 1 , a shock absorption pile foundation comprises a pile column 1 and a pile cap 2, a steel reinforcement cage 3 is pre-buried in the pile column 1, a pile support 4 is integrally poured on the pile column 1, a cover shell 5 with a hollow interior and an open bottom is pre-buried at the bottom of the pile cap 2, the cover shell 5 can be welded by multiple steel plates, a plurality of anchor bars 7 are welded on the cover shell 5, the anchor bars 7 are pre-buried in the pile cap 2, and the top of the pile column 1 is located in the cover shell 5.

[0038] Referring to Figure 1 , Figure 2 and 3 , a shock absorption assembly 6 is arranged between the cover shell 5 and the pile column 1, the shock absorption assembly 6 is used for absorbing the seismic waves transmitted on the pile column 1, the shock absorption assembly 6 comprises a rubber isolation layer 61 arranged at the top of the pile column 1 and a rubber shock absorption block 62 arranged on the pile support 4, a steel backing plate 19 is arranged between the top of the pile column 1 and the rubber isolation layer 61, the rubber isolation layer 61 is used for abutting against the top wall in the cover shell 5, and the rubber shock absorption block 62 is distributed around the pile column 1 and abuts against the inner side wall of the cover shell 5.

[0039] When the seismic waves are transmitted on the pile column 1, the pile column 1 vibrates in the horizontal direction, the vibration causes the rubber shock absorption blocks 62 around the pile column 1 to deform, the deformed rubber shock absorption blocks 62 absorb the seismic wave energy from the pile column 1, and the restoring force of the rubber shock absorption blocks 62 forces the cover shell 5 to drive the pile cap 2 to reset, and the seismic wave energy from the pile column 1 in the vertical direction is partly absorbed by the vertical deformation of the rubber shock absorption blocks 62 and partly absorbed by the deformation of the rubber isolation layer 61.

[0040] Referring to Figure 2 and Figure 3The mounting plate 8 is ball-jointed to the inside of the anti-tension cylinder 11, the end plate 12 is coaxially arranged in the anti-tension cylinder 11, the anti-tension rod 13 is coaxially welded to the end plate 12, one end of the anti-tension rod 13 is slidably arranged out of the anti-tension cylinder 11, the end of the anti-tension rod 13 is ball-jointed to the inner top of the cover 5, and the anti-tension compression spring 14 is arranged between the inner side wall of the anti-tension cylinder 11 and the side of the end plate 12 facing the inner top of the cover 5.

[0041] With reference to Figure 2 and Figure 4 The mounting plate 8 is ball-jointed to the inside of the anti-tension cylinder 11, the end plate 12 is coaxially arranged in the anti-tension cylinder 11, the anti-tension rod 13 is coaxially welded to the end plate 12, one end of the anti-tension rod 13 is slidably arranged out of the anti-tension cylinder 11, the end of the anti-tension rod 13 is ball-jointed to the inner top of the cover 5, and the anti-tension compression spring 14 is arranged between the inner side wall of the anti-tension cylinder 11 and the side of the end plate 12 facing the inner top of the cover 5.

[0042] When the rubber shock-absorbing block 62 is deformed, the deformed rubber shock-absorbing block 62 pushes the buffer plate 9, the buffer plate 9 squeezes the gas spring 10 through the mounting plate 8, the gas spring 10 is contracted to slow down the sharp deformation of the rubber shock-absorbing block 62, and the vertical vibration of the pile support 4 makes the cover 5 slide with the anti-tension rod 13, the anti-tension rod 13 squeezes the anti-tension compression spring 14 with the end plate 12, the anti-tension compression spring 14 is deformed, and the reaction force of the deformation of the anti-tension compression spring 14 hinders the vertical movement of the cover 5.

[0043] With reference to Figure 1 and Figure 2 The pile 1 comprises a rod top 101, a rod body 102 and a rod tip 103, the pile support 4 is integrally formed on the rod top 101, and the connecting pieces 17 are arranged between the rod top 101, the rod body 102 and the rod tip 103.

[0044] With reference to Figure 1 , Figure 2 and Figure 5 The connecting pieces 17 comprise the convex plate 171 and the concave plate 172 which are embedded in the two ends of the rod body 102 and match with each other, the waterproof rubber rings 18 are arranged between the rod top 101, the rod body 102 and the rod tip 103, the convex plate 171 and the concave plate 172 are both in the rings of the waterproof rubber rings 18, the convex plate 171 is embedded in the rod top 101 and matches with the concave plate 172 on the rod body 102, and the concave plate 172 is embedded in the rod tip 103 and matches with the convex plate 171 on the rod body 102.

[0045] With reference to Figure 1 , Figure 2 and Figure 5The convex plate 171 is welded with a plug column 173, the plug column 173 is coaxially welded with a plug cone 174, the diameter of the plug cone 174 gradually decreases along the direction from the plug column 173 to the plug cone 174, the maximum diameter of the plug cone 174 is greater than the diameter of the plug column 173, the concave plate 172 is provided with a plug slot 175 for inserting the plug cone 174, and a plurality of locking blocks 176 are slidingly arranged on the plug slot 175 and are uniformly distributed in the circumferential direction about the axis of the plug cone 174.

[0046] With reference to Figure 1 , Figure 2 and Figure 5 , the side of the locking block 176, which faces the plug cone 174, is provided with a guide inclined surface 177, the guide inclined surface 177 is used for abutting and slidingly matching with the conical surface of the plug cone 174, the concave plate 172 is provided with a sliding slot 178 for sliding of the locking block 176, and a locking compression spring 179 is supported between the locking block 176 and the inner side wall of the plug slot 175.

[0047] The worker first stands the rod tip 103 on the ground according to the design depth of the pile 1, and simultaneously hoists the rod body 102 above the rod tip 103 through hoisting equipment, with the rod body 102 descending, the plug cone 174 on the convex plate 171 of the rod body 102 gradually inserts into the plug slot 175 on the concave plate 172 of the rod tip 103, the guide inclined surface 177 on the locking block 176 is pushed by the plug cone 174, the locking block 176 slides, and the locking compression spring 179 deforms.

[0048] Until the locking block 176 is located at the edge of the plug cone 174 close to the plug column 173, with the rod body 102 continuing to descend, the locking block 176 abuts on the plug column 173, at this time, the locking compression spring 179 restores the deformation, thereby completing the assembly of a single rod body 102 and the rod tip 103, then the hoisting of multiple rod bodies 102 is repeated, and finally the rod top 101 is hoisted, so that the assembly work of the design depth of the pile 1 is completed.

[0049] The implementation principle of the shock-absorbing pile foundation in the embodiment of the application is as follows: when the seismic wave is transmitted to the pile 1, the pile 1 vibrates in the horizontal direction, the vibration causes the rubber shock-absorbing blocks 62 around the pile 1 to deform, the deformed rubber shock-absorbing blocks 62 absorb the seismic wave energy from the pile 1, and the restoring force of the rubber shock-absorbing blocks 62 forces the cover 5 to drive the pile cap 2 to reset, and the seismic wave energy from the pile 1 in the vertical direction is partly absorbed by the vertical deformation of the rubber shock-absorbing blocks 62 and partly absorbed by the rubber isolation layer 61 through the deformation of the rubber isolation layer 61.

[0050] When the rubber shock-absorbing block 62 is deformed, the deformed rubber shock-absorbing block 62 pushes the buffer plate 9, the buffer plate 9 extrudes the gas spring 10 through the mounting plate 8, the gas spring 10 is contracted to slow down the sharp deformation of the rubber shock-absorbing block 62, and meanwhile, the vertical vibration of the pile support 4 makes the cover 5 slide with the tension rod 13, the tension rod 13 extrudes the tension compression spring 14 with the end plate 12, the tension compression spring 14 is deformed, and the reaction force of the deformed tension compression spring 14 hinders the vertical movement of the cover 5.

[0051] According to the design depth of the pile 1, the worker first stands the rod tip 103 on the ground through hoisting equipment, and hoists the rod body 102 through the hoisting equipment so that the rod body 102 is located directly above the rod tip 103. With the descent of the rod body 102, the insertion cone 174 on the convex plate 171 of the rod body 102 gradually inserts into the insertion slot 175 on the concave plate 172 of the rod tip 103, the insertion cone 174 pushes the guide inclined surface 177 on the locking block 176, the locking block 176 slips, and the locking compression spring 179 is deformed.

[0052] Until the locking block 176 is located at the edge of the insertion column 173 close to the insertion cone 174, with the continuous descent of the rod body 102, the locking block 176 abuts against the insertion column 173, at this time, the locking compression spring 179 restores the deformation, thereby completing the assembly of the single rod body 102 and the rod tip 103. Then, the hoisting of multiple rod bodies 102 is repeated, and finally, the hoisting of the rod top 101 is completed, so that the assembly work of the design depth of the pile 1 is completed.

[0053] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A shock-absorbing pile foundation comprising a pile column (1) and a pile cap (2), a reinforcement cage (3) being embedded in the pile column (1), characterized in that: The pile (1) is provided with a pile support (4), the pile cap (2) is provided with a hollow cover (5) with an open bottom, the top of the pile (1) is located in the cover (5), and a damping assembly (6) is arranged between the cover (5) and the pile (1), which is used to absorb the seismic wave transmitted on the pile (1).

2. A pile foundation according to claim 1, wherein: The damping assembly (6) includes a rubber isolation layer (61) arranged at the top of the pile (1) and a rubber damping block (62) arranged on the pile support (4), the rubber isolation layer (61) is used to abut against the inner top wall of the cover (5), and the rubber damping block (62) is distributed around the pile (1) and abuts against the inner side wall of the cover (5).

3. A pile foundation according to claim 1, wherein: The cover (5) is provided with a plurality of anchor bars (7) embedded in the pile cap (2).

4. A pile foundation according to claim 2, wherein: The pile support (4) is provided with a mounting plate (8) between two adjacent rubber damping blocks (62), the rubber damping block (62) is provided with a buffer plate (9), and the mounting plate (8) and the buffer plate (9) are ball-connected with a gas spring (10).

5. A pile foundation according to claim 4, wherein: The mounting plate (8) is ball-connected with a hollow tension cylinder (11), the tension cylinder (11) is slidably provided with an end plate (12), the end plate (12) is coaxially provided with a tension rod (13), the tension rod (13) slides out of the tension cylinder (11), one end of the tension rod (13) out of the tension cylinder (11) is ball-connected to the inner top of the cover (5), and the tension compression spring (14) is top-supported between the side of the end plate (12) facing the inner top of the cover (5) and the inner side wall of the tension cylinder (11).

6. A pile foundation according to claim 5, wherein: The pile support (4) is provided with a surrounding frame (15), and the surrounding frame (15) and the bottom of the pile cap (2) are provided with a sealing rubber strip (16).

7. A pile foundation according to claim 1, characterized in that: The pile (1) includes a rod top (101), a rod body (102) and a rod tip (103), the pile support (4) is arranged on the rod top (101), and the rod top (101), the rod body (102) and the rod tip (103) are all provided with a connecting piece (17), which is used to fix the rod top (101), the rod body (102) and the rod tip (103) together.

8. A pile foundation according to claim 7, wherein: The connecting piece (17) comprises convex plates (171) and concave plates (172) arranged at two ends of the shaft body (102) respectively and matched with each other, the shaft top (101) is provided with the convex plate (171) matched with the concave plate (172) on the shaft body (102), the shaft tip (103) is provided with the concave plate (172) matched with the convex plate (171) on the shaft body (102), the convex plate (171) is provided with an insertion column (173), the insertion column (173) is coaxially provided with an insertion cone (174), the diameter of the insertion cone (174) gradually decreases along the direction from the insertion column (173) to the insertion cone (174), the maximum diameter of the insertion cone (174) is greater than the diameter of the insertion column (173), the concave plate (172) is provided with an insertion slot (175) for inserting the insertion cone (174), the insertion slot (175) is slidably provided with a locking block (176), the side of the locking block (176) facing the insertion cone (174) is provided with a guide inclined surface (177), the guide inclined surface (177) is used for abutting and slidingly matching with the conical surface of the insertion cone (174), the concave plate (172) is provided with a sliding slot (178) for sliding the locking block (176), and the locking block (176) and the inner side wall of the insertion slot (175) are supported by a locking compression spring (179).

9. A pile foundation according to claim 8, characterised in that: The shaft top (101), the shaft body (102) and the shaft tip (103) are all provided with waterproof rubber rings (18), and the convex plate (171) and the concave plate (172) are both arranged in the rings of the waterproof rubber rings (18).

Images