High-strength concrete prefabricated square pile structure with anti-seismic function

Abstract

The utility model relates to the technical field of building foundation engineering, concretely relates to a high-strength concrete prefabricated square pile structure with anti-seismic, including square pile body, prestressed reinforcement system, anti-seismic buffer assembly and pile end connecting mechanism, the both sides of square pile body are embedded with prefabricated groove, square pile body adopts high-strength concrete pouring and is formed, the prestressed reinforcement system includes the double reinforcement system that outer layer FRP bar cage and inner layer reinforcement cage constitute, the anti-seismic buffer assembly includes the anti-seismic buffer layer of setting in the both ends of square pile body, the utility model solves the conventional prefabricated square pile in prior art when being impacted by pile driver or the earthquake effect, and the impact and vibration can extend to the inside along the square pile end, lead to the pile body cracking, in addition, point out, the building industry has special requirements to pile foundation technology when facing different natural conditions, especially in the earthquake active region, needs the pile foundation to have good anti-seismic performance.

Description

Technical Field

[0001] This utility model relates to the field of building foundation engineering technology, specifically to a high-strength precast concrete square pile structure with earthquake resistance. Background Technology

[0002] Precast concrete square piles are a common type of foundation pile, widely used in the foundation construction of industrial and civil buildings, bridges, ports, and other projects. Compared with traditional round piles, square piles have advantages such as high bearing capacity, convenient construction, and easy quality control. However, existing precast concrete square piles have significant shortcomings in terms of seismic performance.

[0003] When conventional precast square piles are subjected to impact from pile drivers or earthquakes, the impact force and vibration extend inward along the ends of the piles, causing cracks in the pile body. Furthermore, it is pointed out that the construction industry has specific requirements for pile foundation technology when facing different natural conditions, especially in seismically active areas where pile foundations need to have good seismic performance.

[0004] Therefore, in view of this, we studied and improved the existing structure and its shortcomings, and proposed a high-strength precast concrete square pile structure with earthquake resistance, in order to achieve a more practical value. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength precast concrete square pile structure with earthquake resistance to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength precast concrete square pile structure with earthquake resistance, comprising a square pile body, a prestressed steel reinforcement system, an earthquake-resistant buffer assembly, and a pile end connection mechanism, wherein precast grooves are embedded on both sides of the square pile body;

[0007] The square pile body is made of high-strength concrete.

[0008] The prestressed steel reinforcement system includes a double reinforcement system consisting of an outer FRP cage and an inner steel cage;

[0009] The seismic buffer assembly includes seismic buffer layers disposed at both ends of the square pile body;

[0010] The pile end connection mechanism includes an anchoring connector embedded in the middle of the seismic buffer layer.

[0011] Furthermore, the outer FRP reinforcement cage is composed of multiple longitudinal FRP bars and FRP spiral stirrups, and the inner reinforcement cage is composed of multiple longitudinal steel bars and spiral stirrups. The outer FRP reinforcement cage is located outside the inner reinforcement cage, forming a double seismic protection structure.

[0012] Furthermore, the seismic buffer layer includes an outer buffer pad, an inner buffer pad, a central groove, a reinforcing bar groove, and an anti-slip ring pad. An inner buffer pad is provided at the middle of one end of the outer buffer pad. A central groove is provided in the middle of the inner buffer pad, and a reinforcing bar groove is provided around the inside of the inner buffer pad. An anti-slip ring pad is provided on the inner wall of the central groove.

[0013] The anchoring connector includes a precast rod, a precast threaded outer tube, and a precast threaded inner tube. One end of the precast rod is fitted with the precast threaded outer tube, and the other end of the precast threaded outer tube is fitted with the precast threaded inner tube.

[0014] Furthermore, the pre-threaded inner tube is placed in the middle of the pre-formed groove;

[0015] The pre-threaded outer tube is prefabricated at one end inside the pre-made rod;

[0016] The pre-threaded outer tube and the pre-threaded inner tube form a detachable structure.

[0017] Furthermore, the precast rods are interconnected through the central groove and the buffer pad.

[0018] Furthermore, the inner outer layer of the square pile body is also provided with a stress-dispersing fiber mesh, which is woven from a mixture of polypropylene fibers and steel fibers and is evenly distributed in the pile body concrete.

[0019] This utility model provides a high-strength precast concrete square pile structure with earthquake resistance, which has the following beneficial effects:

[0020] 1. This utility model significantly improves seismic performance: through the combined effect of a double reinforcement system, a seismic buffer layer, and a rhomboid stirrup network, it effectively disperses and consumes seismic energy, reducing earthquake damage to square piles.

[0021] 2. This utility model has good economic benefits: without significantly increasing costs, it significantly improves the service life and seismic performance of square piles by optimizing structural design, thereby reducing the risk of earthquake losses.

[0022] 3. This utility model is easy to construct: it adopts prefabrication production, and only simple assembly is required on site, which improves construction efficiency and ensures project quality. Attached Figure Description

[0023] The disclosure of this utility model will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. In the drawings:

[0024] Figure 1This is a schematic diagram of the internal cross-sectional structure of a high-strength precast concrete square pile structure with earthquake resistance according to this utility model.

[0025] Figure 2 This is a top view of the square pile body of a high-strength precast concrete square pile structure with earthquake resistance according to this utility model.

[0026] Figure 3 This is a schematic diagram of the internal structure of the seismic buffer layer of a high-strength precast concrete square pile structure with seismic resistance according to this utility model.

[0027] Figure 4 This is a partially enlarged structural diagram of the anchorage connection component for a high-strength precast concrete square pile structure with earthquake resistance according to this utility model.

[0028] In the diagram: 1. Square pile body; 101. Precast groove; 2. Outer FRP reinforcement cage; 21. Longitudinal FRP reinforcement; 22. FRP spiral stirrup; 3. Inner reinforcement cage; 31. Longitudinal reinforcement; 32. Spiral stirrup; 4. Seismic buffer layer; 401. Outer buffer pad; 402. Inner buffer pad; 403. Middle groove; 404. Reinforcement groove; 405. Anti-slip ring pad; 5. Stress dispersion fiber mesh; 6. Anchorage connector; 601. Precast rod; 602. Precast threaded outer tube; 603. Precast threaded inner tube. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-4 This utility model provides a technical solution: a high-strength precast concrete square pile structure with earthquake resistance, including a square pile body 1, a prestressed steel reinforcement system, an earthquake-resistant buffer component and a pile end connection mechanism, with precast grooves 101 embedded on both sides of the square pile body 1;

[0031] The square pile body 1 is made of high-strength concrete.

[0032] The prestressed steel reinforcement system includes a double reinforcement system consisting of an outer FRP cage 2 and an inner steel cage 3;

[0033] The seismic buffer assembly includes seismic buffer layers 4 disposed at both ends of the square pile body 1;

[0034] The pile end connection mechanism includes an anchoring connector 6 embedded in the middle of the seismic buffer layer 4; the outer FRP reinforcement cage 2 is composed of multiple longitudinal FRP bars 21 and FRP spiral stirrups 22, and the inner reinforcement cage 3 is composed of multiple longitudinal bars 31 and spiral stirrups 32. The outer FRP reinforcement cage 2 is located outside the inner reinforcement cage 3, forming a double seismic protection structure; the seismic buffer layer 4 includes an outer buffer pad 401, an inner buffer pad 402, a central groove 403, a steel bar groove 404, and an anti-slip ring pad 405. An inner buffer pad 402 is provided at the middle of one end of the outer buffer pad 401. A central groove 403 is provided in the middle of the inner buffer pad 402, and a steel bar groove 404 is provided around the inside of the inner buffer pad 402. An anti-slip ring pad 405 is provided on the inner wall of the central groove 403.

[0035] The anchoring connector 6 includes a precast rod 601, a precast threaded outer tube 602, and a precast threaded inner tube 603. The precast rod 601 is equipped with the precast threaded outer tube 602 at one end, and the precast threaded inner tube 603 is installed on the outer wall of the other end of the precast threaded outer tube 602. The precast threaded inner tube 603 is placed in the middle of the precast groove 101.

[0036] The pre-threaded outer tube 602 is pre-fabricated at one end inside the pre-fabricated rod 601;

[0037] The prefabricated threaded outer tube 602 and the prefabricated threaded inner tube 603 form a detachable structure; the prefabricated rod 601 is connected to each other through the middle groove 403 and the buffer pad; the inner and outer layers of the square pile body 1 are also provided with stress-dispersing fiber mesh 5, which is woven from a mixture of polypropylene fiber and steel fiber and is evenly distributed in the pile body concrete.

[0038] First, the outer FRP reinforcement cage and the inner steel reinforcement cage are made. Then, the prefabricated threaded inner tube 603 is placed in the mold. Next, the stress-dispersing fiber mesh 5 is installed. Finally, high-strength concrete is poured and formed after vibration, curing and prestressing tensioning.

[0039] Then, the buffer pad of the seismic buffer layer 4 is inserted into the precast groove 101 reserved in the square pile body 1. Then, the precast rod 601 is inserted from the middle groove 403 of the seismic buffer layer 4 to connect and fix the precast threaded outer tube 602 and the precast threaded inner tube 603, thus completing the assembly operation.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in this utility model without creative effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope defined in the claims.

Claims

1. A high-strength precast concrete square pile structure with earthquake resistance, characterized in that: It includes a square pile body (1), a prestressed steel reinforcement system, a seismic buffer assembly and a pile end connection mechanism, wherein the square pile body (1) is provided with prefabricated grooves (101) on both sides. The square pile body (1) is made of high-strength concrete; The prestressed steel reinforcement system includes a double reinforcement system consisting of an outer FRP reinforcement cage (2) and an inner steel reinforcement cage (3); The seismic buffer assembly includes seismic buffer layers (4) disposed at both ends of the square pile body (1). The pile end connection mechanism includes an anchoring connector (6) embedded in the middle of the seismic buffer layer (4).

2. The earthquake-resistant high-strength precast concrete square pile structure according to claim 1, characterized in that, The outer FRP reinforcement cage (2) is composed of multiple longitudinal FRP bars (21) and FRP spiral stirrups (22), and the inner reinforcement cage (3) is composed of multiple longitudinal bars (31) and spiral stirrups (32). The outer FRP reinforcement cage (2) is located outside the inner reinforcement cage (3), forming a double seismic protection structure.

3. A high-strength precast concrete square pile structure with earthquake resistance according to claim 1, characterized in that, The seismic buffer layer (4) includes an outer buffer pad (401), an inner buffer pad (402), a central groove (403), a reinforcing bar groove (404), and an anti-slip ring pad (405). An inner buffer pad (402) is provided at the middle of one end of the outer buffer pad (401). A central groove (403) is provided in the middle of the inner buffer pad (402), and a reinforcing bar groove (404) is provided around the inside of the inner buffer pad (402). An anti-slip ring pad (405) is provided on the inner wall of the central groove (403). The anchoring connector (6) includes a precast rod (601), a precast threaded outer tube (602) and a precast threaded inner tube (603). One end of the precast rod (601) is equipped with the precast threaded outer tube (602), and the other end of the precast threaded outer tube (602) is equipped with the precast threaded inner tube (603).

4. A high-strength precast concrete square pile structure with earthquake resistance according to claim 3, characterized in that, The pre-threaded inner tube (603) is placed in the middle of the pre-made groove (101); The prefabricated threaded outer tube (602) is prefabricated inside one end of the prefabricated rod (601); The pre-threaded outer tube (602) and the pre-threaded inner tube (603) form a detachable structure.

5. A high-strength precast concrete square pile structure with earthquake resistance according to claim 3, characterized in that, The precast rod (601) is connected to each other through the central groove (403) and the buffer pad.

6. A high-strength precast concrete square pile structure with earthquake resistance according to claim 1, characterized in that, The inner outer layer of the square pile body (1) is also provided with stress dispersion fiber mesh (5), which is woven from a mixture of polypropylene fiber and steel fiber and is evenly distributed in the pile body concrete.

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