Efficient damping protection device for foundation pit foundation pile

Abstract

The utility model provides an efficient damping protection device for a foundation pit foundation pile, which relates to the technical field of constructional engineering and comprises a bottom column, the top surface of the bottom column is provided with a buffer inserting cavity, an eccentric compensation connecting column is mounted above the bottom column, an inner connecting column is fixedly connected below the eccentric compensation connecting column, and the bottom of the inner connecting column is connected with a limiting inserting block through a connecting rod. Force unloading is conducted through slight bending of the protection device, vibration is absorbed and eliminated through elastic deformation, bending deformation of the foundation pile due to impact force in the radial direction is avoided, inclination of the foundation pile due to the fact that external force is transmitted to the weak portion of the foundation pile in a concentrated mode through stress is avoided, and the problems that much space is occupied due to an external support, and damage is caused are solved. The problems that when a foundation pile is impacted, vibration cannot be absorbed and eliminated through elastic deformation and elastic contraction, external force is transmitted to the weak portion of the foundation pile in a concentrated mode through stress, the foundation pile inclines, and the precision of the upper structure is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a high-efficiency vibration reduction and protection device for foundation pits and piles. Background Technology

[0002] As the core load-bearing component of a building foundation, foundation piles face multiple risks during construction and use. The lateral shear force generated by earthquakes or construction vibrations can easily lead to pile fracture; the instantaneous impact caused by heavy machinery operations or vehicle collisions may cause pile displacement; soil collapse or groundwater erosion can weaken the bearing capacity of the pile due to loosening of the soil around the pile. Foundation pile vibration damping and protection devices are systematic structures designed in building engineering to enhance the seismic and impact resistance of foundation piles. They are mainly used for the stability protection of foundation piles after foundation pit excavation.

[0003] In existing protective devices for foundation piles, the strength of the foundation piles is generally improved by erecting support brackets to give the foundation piles good seismic resistance. However, the external support method occupies a lot of space, increases the overall volume of the support, increases the complexity of construction, and does not have the function of buffering and shock absorption. When the foundation pile is impacted, it cannot absorb and eliminate the vibration through elastic deformation and elastic contraction. The external force is transmitted to the weak parts of the foundation pile through stress concentration, causing the foundation pile to tilt and affecting the accuracy of the superstructure. Utility Model Content

[0004] This utility model provides a high-efficiency vibration reduction and protection device for foundation pit piles, which solves the problems of external support occupying a lot of space, increasing the total volume of the support, increasing the complexity of construction, and lacking the function of buffering and vibration reduction. When the pile is impacted, it cannot absorb and eliminate the vibration through elastic deformation and elastic contraction, so the external force is transmitted to the weak part of the pile through stress concentration, causing the pile to tilt and affecting the accuracy of the superstructure.

[0005] This utility model provides a high-efficiency vibration reduction and protection device for foundation pit piles, specifically including: a bottom column, a buffer cavity on the top surface of the bottom column, an eccentric compensation connecting column installed above the bottom column, an inner column fixedly connected below the eccentric compensation connecting column, a limit block connected to the bottom of the inner column via a connecting rod, the limit block being inserted into the buffer cavity, a buffer pad ring being sleeved on the inner column, the lower edge of the buffer pad ring being in contact with the top of the bottom column, the upper edge of the buffer pad ring being in contact with the bottom of the eccentric compensation connecting column, a top column being provided at the top of the eccentric compensation connecting column, a compensation cavity being opened at the center of the upper surface of the eccentric compensation connecting column, an inclined buffer insert being fixedly connected below the top column, the inclined buffer insert being inserted into the compensation cavity, a buffer sleeve being sleeved on the inclined buffer insert, the outer surface of the buffer sleeve being in contact with the inner wall of the compensation cavity, and both the buffer pad ring and the buffer sleeve being made of polyurethane rubber material.

[0006] Furthermore, the inner edge of the buffer cavity is provided with two cavity limiting inner edges, and the outer surface of the limiting block is provided with two block notches.

[0007] Furthermore, four vertical locking plates are vertically fixed to the upper surface of the bottom column, and four pad ring insertion holes are longitudinally opened through the buffer pad ring, with the vertical locking plates inserted into the pad ring insertion holes.

[0008] Furthermore, a limiting opening is provided at the bottom of the compensation cavity, and the bottom of the inclined buffer post has a round head structure, with the bottom of the inclined buffer post fitting against the bottom of the limiting opening.

[0009] Furthermore, the eccentric compensation connecting column has four limiting screw holes on its outside, the limiting screw holes are perpendicular to the axis of the eccentric compensation connecting column, and the limiting screw holes are screwed with limiting bolts inside.

[0010] Furthermore, the outer perimeter of the inclined buffer plug is provided with a plug limiting annular groove, and the inner end of the limiting bolt is movably connected inside the plug limiting annular groove.

[0011] Furthermore, a gap is provided between the top surface of the eccentric compensation connecting column and the bottom surface of the top column.

[0012] Furthermore, a gap is provided between the bottom surface of the limiting plug and the bottom surface of the buffer cavity, and a gap is provided between the top of the vertical locking plate and the top of the pad ring socket.

[0013] This utility model provides a high-efficiency vibration damping and protection device for foundation pit piles, which has the following beneficial effects:

[0014] The vibration damping and protection device for foundation piles in this utility model combines a vibration damping and protection device with the foundation pile, which has good elasticity, so that the foundation pile has a certain degree of elasticity. When it is affected by radial external force, the force can be dissipated by the slight bending of the protection device, and the vibration can be absorbed and eliminated by elastic deformation. This prevents the foundation pile from bending and deforming due to radial impact force, and prevents the external force from being transmitted to the weak parts of the foundation pile through stress concentration, which would cause the foundation pile to tilt.

[0015] In addition, the vibration damping and protection device used to connect the foundation piles also has a longitudinal elastic contraction function. When the foundation pile is subjected to a vertically downward axial impact force, the eccentric compensation connecting column and the inner column move downward. The eccentric compensation connecting column and the bottom column squeeze the buffer pad ring longitudinally, thereby compressing the buffer pad ring longitudinally and realizing the longitudinal vibration damping function, thus avoiding damage to the weak parts of the foundation pile due to the instantaneous longitudinal impact force. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0020] Figure 2 This diagram shows the structure when the bottom post and the buffer ring of this application are separated;

[0021] Figure 3 A schematic diagram of the structure at the bottom of the top column of this application is shown;

[0022] Figure 4 This shows a schematic diagram of the structure in the longitudinal section state of this application;

[0023] Figure 5 This paper shows a schematic diagram of the structure in its disassembled state.

[0024] Figure 6 This is a schematic diagram of the structure from a longitudinal section view of the decomposed state of this application.

[0025] Figure label:

[0026] 1. Bottom column; 101. Buffer cavity; 102. Inner edge of cavity limiting; 103. Vertical locking plate; 2. Buffer pad ring; 201. Pad ring insertion port; 3. Eccentric compensation connecting column; 301. Inner connecting column; 302. Limiting block; 303. Block notch; 304. Compensation cavity; 305. Limiting bottom opening; 306. Limiting screw hole; 307. Limiting bolt; 4. Top column; 401. Inclined buffer insert; 402. Insertion column limiting ring groove; 5. Buffer pad cylinder. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1: Please refer to Figures 1 to 6 :

[0029] This utility model proposes a high-efficiency vibration reduction and protection device for foundation pit piles, including: a base column 1, a buffer cavity 101 formed on the top surface of the base column 1, an eccentric compensation connecting column 3 installed above the base column 1, an inner connecting column 301 fixedly connected below the eccentric compensation connecting column 3, a limit block 302 connected to the bottom of the inner connecting column 301 via a connecting rod, the limit block 302 being inserted into the buffer cavity 101, a buffer pad ring 2 being sleeved on the inner connecting column 301, the lower edge of the buffer pad ring 2 being in contact with the top of the base column 1, and the buffer pad ring 2... The upper edge of the eccentric compensation connecting column 3 is attached to the bottom of the eccentric compensation connecting column 3. The top of the eccentric compensation connecting column 3 is provided with a top column 4. A compensation cavity 304 is opened in the center of the upper surface of the eccentric compensation connecting column 3. An inclined buffer insert 401 is fixedly connected below the top column 4. The inclined buffer insert 401 is inserted into the compensation cavity 304. A buffer pad 5 is sleeved on the inclined buffer insert 401. The outer surface of the buffer pad 5 is attached to the inner wall of the compensation cavity 304. Both the buffer pad ring 2 and the buffer pad 5 are made of polyurethane rubber material; bottom column The bottom is fixed to the top of the pile with bolts. The top column 4 is fixed to the top of the pile with bolts. When the pile is subjected to a vertically downward axial impact force, the eccentric compensation connecting column 3 and the inner column 301 move downward. The eccentric compensation connecting column 3 and the bottom column 1 longitudinally compress the buffer ring 2, thereby achieving the function of longitudinal shock absorption and avoiding damage to the weak parts of the pile due to instantaneous longitudinal impact. When the pile is subjected to radial vibration or impact, the inclined buffer insert 401 bends at a certain angle inside the compensation insert cavity 304 and compresses the buffer cylinder 5, causing the buffer cylinder 5 to deform. The deformation and rebound of the buffer cylinder 5 support the eccentric compensation connecting column 3 and the top column 4. The slight bending of the top column 4 relieves the force and absorbs and eliminates the vibration through elastic deformation, preventing the pile from bending and deforming due to radial impact force. It also prevents external force from being transmitted to the weak parts of the pile through stress concentration, which could cause the pile to tilt, affect the accuracy of the superstructure, or even cause the pit to collapse.

[0030] In this embodiment, the inner edge of the inner wall of the buffer cavity 101 is provided with two cavity limiting inner edges 102, and the outer surface of the limiting block 302 is provided with two block notches 303. When the bottom post 1 and the eccentric compensation connecting post 3 are assembled, the limiting block 302 is inserted vertically downward into the buffer cavity 101, and the block notches 303 are aligned with the contour of the cavity limiting inner edges 102. After the limiting block 302 is fully inserted into the buffer cavity 101, the eccentric compensation connecting post 3 is rotated ninety degrees so that the cavity limiting inner edges 102 and the block notches 303 are intersected, thus avoiding the quick assembly of the bottom post 1 and the eccentric compensation connecting post 3, and ensuring the firm connection between the bottom post 1 and the eccentric compensation connecting post 3.

[0031] In this embodiment, four vertical locking plates 103 are vertically fixedly connected to the upper surface of the bottom column 1. The buffer pad ring 2 has four pad ring insertion holes 201 extending longitudinally through it. The vertical locking plates 103 are inserted into the pad ring insertion holes 201 to limit the movement and prevent the buffer pad ring 2 from being deformed by pressure and expanding and twisting outward. This provides support for the buffer pad ring 2 and improves the compression and rebound stability of the buffer pad ring 2.

[0032] In this embodiment of the present disclosure, a limiting bottom opening 305 is provided at the bottom of the compensation cavity 304, and the bottom of the inclined buffer plug 401 has a round head structure. The bottom of the inclined buffer plug 401 fits against the bottom of the limiting bottom opening 305, and the limiting function is achieved through the contact between the inclined buffer plug 401 and the bottom of the limiting bottom opening 305.

[0033] In this embodiment, a gap is provided between the top surface of the eccentric compensation connecting column 3 and the bottom surface of the top column 4, a gap is provided between the bottom surface of the limiting insert 302 and the bottom surface inside the buffer insert cavity 101, and a gap is provided between the top of the vertical locking plate 103 and the top of the pad ring insert 201; so that when the eccentric compensation connecting column 3 is subjected to longitudinal pressure or vibration, it can compress the buffer pad ring 2 and move downward, thereby playing a role in buffering and shock absorption and reducing damage to the foundation pile.

[0034] In Embodiment 2, based on Embodiment 1, four limiting screw holes 306 are provided on the outside of the eccentric compensation connecting column 3. The limiting screw holes 306 are perpendicular to the axis of the eccentric compensation connecting column 3. Limiting bolts 307 are spirally connected inside the limiting screw holes 306. The outside of the inclined buffer insert 401 is surrounded by an insert limiting ring groove 402. The inner end of the limiting bolt 307 is movably connected inside the insert limiting ring groove 402, which serves to connect the eccentric compensation connecting column 3 and the top column 4. When the inclined buffer insert 401 swings inside the compensation cavity 304, the limiting bolt 307 moves inside the insert limiting ring groove 402 and does not affect the swing angle of the inclined buffer insert 401. When the top column 4 separates axially from the eccentric compensation connecting column 3, the connection between the limiting bolt 307 and the insert limiting ring groove 402 can prevent the top column 4 from detaching.

[0035] The working principle of this embodiment is as follows: First, the bottom column 1 is fixedly connected to the top of the pile with bolts, and the top column 4 is fixedly installed with the top component of the pile with bolts. When the pile is subjected to a vertically downward axial impact force, the eccentric compensation connecting column 3 and the inner connecting column 301 move downward. The eccentric compensation connecting column 3 and the bottom column 1 longitudinally compress the buffer pad ring 2, thereby achieving the function of longitudinal shock absorption and avoiding damage to the weak parts of the pile due to the instantaneous longitudinal impact force. When the pile is subjected to radial vibration or impact, the inclined buffer insert 401 bends at a certain angle inside the compensation insert cavity 304 and compresses the buffer pad 5, causing the buffer pad 5 to deform. The deformation and rebound of the buffer pad 5 support the eccentric compensation connecting column 3 and the top column 4. The slight bending of the top column 4 relieves the force and absorbs and eliminates the vibration through elastic deformation, preventing the pile from bending and deforming due to radial impact force. This also prevents external force from being transmitted to the weak parts of the pile through stress concentration, which could cause the pile to tilt and affect the accuracy of the superstructure, thus reducing damage to the pile.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0038] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. High-efficiency vibration damping and protection devices for foundation pits and piles, including: The base column (1) is characterized in that a buffer cavity (101) is provided on the top surface of the base column (1), an eccentric compensation connecting column (3) is installed above the base column (1), an inner connecting column (301) is fixedly connected below the eccentric compensation connecting column (3), a limit plug (302) is connected to the bottom of the inner connecting column (301) through a connecting rod, the limit plug (302) is inserted into the buffer cavity (101), a buffer pad ring (2) is sleeved on the inner connecting column (301), the lower edge of the buffer pad ring (2) is in contact with the top of the base column (1), and the upper edge of the buffer pad ring (2) is in contact with the eccentric compensation connecting column (301). The bottom of the compensation column (3) is attached, and the top of the eccentric compensation column (3) is provided with a top column (4). The center of the upper surface of the eccentric compensation column (3) is provided with a compensation cavity (304). An inclined buffer column (401) is fixedly connected below the top column (4). The inclined buffer column (401) is inserted into the compensation cavity (304). A buffer pad (5) is attached to the inclined buffer column (401). The outer surface of the buffer pad (5) is attached to the inner wall of the compensation cavity (304). The buffer ring (2) and the buffer pad (5) are both made of polyurethane rubber material.

2. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, The inner edge of the buffer cavity (101) is provided with two cavity limiting inner edges (102), and the outer surface of the limiting block (302) is provided with two block notches (303).

3. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, The bottom column (1) has four vertical locking plates (103) fixedly connected to its upper surface. The buffer pad ring (2) has four pad ring insertion holes (201) that are opened longitudinally. The vertical locking plates (103) are inserted into the pad ring insertion holes (201).

4. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, The compensation cavity (304) has a limiting bottom opening (305) at the bottom, and the bottom of the inclined buffer plug (401) has a round head structure. The bottom of the inclined buffer plug (401) fits with the bottom of the limiting bottom opening (305).

5. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, The eccentric compensation connecting column (3) has four limiting screw holes (306) on its outside. The limiting screw holes (306) are perpendicular to the axis of the eccentric compensation connecting column (3). The limiting screw holes (306) are screwed with limiting bolts (307) inside.

6. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, The inclined buffer plug (401) has a plug limiting annular groove (402) around its outer perimeter, and the inner end of the limiting bolt (307) is movably connected inside the plug limiting annular groove (402).

7. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 1, characterized in that, A gap is provided between the top surface of the eccentric compensation connecting column (3) and the bottom surface of the top column (4).

8. The high-efficiency vibration damping and protection device for foundation pit piles according to claim 3, characterized in that, A gap is provided between the bottom surface of the limiting plug (302) and the bottom surface of the buffer cavity (101), and a gap is provided between the top of the vertical locking plate (103) and the top of the pad ring socket (201).

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