Municipal construction pile body reinforcing device

Abstract

The utility model relates to the technical field of excavation and filling, in particular to a municipal construction pile body reinforcing device which comprises a rock-soil layer, a pile hole is formed in the center of the rock-soil layer, a round hole is formed in an inner cavity of a round pipe, an inner rod is connected to the round hole of the round pipe in a sleeved mode, an inner pipe is connected to the center of the upper surface of the round pipe in a sleeved mode, and the bottom end of the inner pipe is conical. The bottom of the inner pipe is symmetrically sleeved with balls, and the side walls of the balls are attached to the spherical end of the inner rod. The contact area between the pile body and the surrounding soil body can be obviously increased, so that the bearing capacity of the pile body is improved, the extension of the supporting rods can more uniformly disperse the load into the surrounding soil body, the local stress concentration of the pile body is reduced, the overall stability is improved, the anchoring effect is formed, and the pulling resistance of the pile body is obviously improved; and meanwhile, the grouting device is used in cooperation with an auxiliary structure, grouting overflow is avoided, waste of grouting materials can be reduced, and it is ensured that the grouting materials are distributed within a preset range.

Description

Technical Field

[0001] The utility model relates to the technical field of excavation and filling, and specifically relates to a municipal construction pile body reinforcement device. Background Art

[0002] In municipal construction, piles are a common foundation engineering component, mainly used to enhance the bearing capacity of the foundation, control settlement, prevent soil sliding, etc. In soft soil foundation areas, piles can penetrate the soft soil layer and transfer the load to deeper and harder soil or rock layers, thereby improving the bearing capacity of the foundation. The pile body can effectively control the uneven settlement of the building and ensure the stability of the structure by adjusting the length and spacing of the piles. In the slope formed by excavation, the pile body can be used as an anti-slip pile to enhance the stability of the slope and prevent soil sliding. In the fill area, the pile body can be used to treat soft soil foundations, enhance the bearing capacity of the foundation, prevent settlement, withstand soil pressure, and prevent soil collapse.

[0003] Pile reinforcement plays a vital role in excavation and filling projects. It can effectively enhance the bearing capacity of the foundation, control settlement, prevent soil sliding, and ensure construction safety. If the pile reinforcement effect is not good, it will affect the quality, safety and progress of the project. Therefore, we propose a municipal construction pile reinforcement device to ensure the reinforcement effect and guarantee the safety and stability of the project in excavation and filling projects. Utility Model Content

[0004] The purpose of the utility model is to provide a municipal construction pile reinforcement device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a municipal construction pile body reinforcement device, including a rock and soil layer, a pile hole is arranged at the center of the rock and soil layer, a round tube is arranged at the bottom of the pile hole of the rock and soil layer, the inner cavity of the round tube is provided with a round hole, the number of the round holes of the round tube is eight, and they are arranged in a double row of rings, an inner rod is sleeved at the round hole of the round tube, and it is a clearance fit, the inner side of the inner rod is spherical, the inner tube is sleeved at the center of the upper surface of the round tube, the bottom end of the inner tube is conical, and balls are symmetrically sleeved at the bottom of the inner tube, and the side walls of the balls fit the spherical end of the inner rod.

[0006] Preferably, a steel bar is welded in an annular shape on the upper surface of the circular tube, the side wall of the steel bar is gap-matched with the inner cavity of the pile hole of the rock and soil layer, and a binding hoop is provided on the outer side wall of the steel bar.

[0007] Preferably, an auxiliary structure is sleeved on the top of the pile hole in the rock and soil layer, and the inner side of the auxiliary structure is sleeved on the top of the inner tube.

[0008] Preferably, the auxiliary structure includes an outer tube, the bottom of the outer wall of the outer tube is socketed with the top of the pile hole of the rock and soil layer, the inner wall of the outer tube is fixedly connected with an arc ring, the top of the inner wall of the outer tube is symmetrically fixedly connected with a support rod, a circular ring is fixedly connected between the inner side walls of the two support rods, and the inner ring wall of the circular ring is socketed with the top of the outer wall of the inner tube.

[0009] Preferably, the inner tube is hollow, and a strip-shaped through groove is provided on the side wall of the inner tube.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: when installing and reinforcing the pile body, a circular tube is set for reinforcement, a support rod is set inside the circular tube, and the end of the support rod is spherical. When the inner tube is inserted, the force-bearing support rod will extend outward and be fully clamped in the pile hole. When the support rod extends outward, the contact area between the pile body and the surrounding soil can be significantly increased, thereby improving the bearing capacity of the pile body. The extension of the support rod can disperse the load more evenly to the surrounding soil, reduce local stress concentration on the pile body, improve the overall stability, form an anchoring effect, and significantly improve the pull-out resistance of the pile body. The effect is particularly obvious in soft soil or loose soil. At the same time, it is used together with an auxiliary structure to avoid grouting overflow, reduce the waste of grouting materials, and ensure that the grouting materials are distributed within a predetermined range. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Structural cross-section view of the middle round tube;

[0013] Figure 3 for Figure 2 Detailed diagram of the structure at A in the middle;

[0014] Figure 4 for Figure 2 Structural assembly drawing of the middle inner tube;

[0015] Figure 5 for Figure 1 Structural details of the auxiliary structure;

[0016] In the figure: 1, rock and soil layer; 2, circular tube; 3, inner rod; 4, inner tube; 5, ball bearing; 6, steel bar; 7, binding hoop; 8, auxiliary structure; 81, outer tube; 82, arc ring; 83, support rod; 84, circular ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5 The utility model provides a municipal construction pile body reinforcement device, including a rock and soil layer 1, a pile hole is arranged at the center of the rock and soil layer 1, a round tube 2 is arranged at the bottom of the pile hole of the rock and soil layer 1, the inner cavity of the round tube 2 is provided with a round hole, the number of the round holes of the round tube 2 is eight, and they are arranged in a double row of rings, an inner rod 3 is sleeved at the round hole of the round tube 2, and it is a clearance fit, the inner side of the inner rod 3 is a spherical setting, an inner tube 4 is sleeved at the center of the upper surface of the round tube 2, the bottom end of the inner tube 4 is a conical setting, and balls 5 are symmetrically sleeved at the bottom of the inner tube 4, and the side walls of the balls 5 fit the spherical end of the inner rod 3.

[0019] A steel bar 6 is welded in an annular shape on the upper surface of the circular tube 2 , the side wall of the steel bar 6 is gap-matched with the inner cavity of the pile hole of the rock and soil layer 1 , and a binding hoop 7 is provided on the outer side wall of the steel bar 6 .

[0020] An auxiliary structure 8 is sleeved on the top of the pile hole of the rock and soil layer 1 , and the inner side of the auxiliary structure 8 is sleeved on the top of the inner pipe 4 .

[0021] The auxiliary structure 8 includes an outer tube 81, the bottom of the outer wall of the outer tube 81 is socketed with the top of the pile hole of the rock and soil layer 1, the inner wall of the outer tube 81 is fixedly connected with an arc ring 82, the top of the inner wall of the outer tube 81 is symmetrically fixedly connected with a support rod 83, a circular ring 84 is fixedly connected between the inner side walls of the two support rods 83, and the inner ring wall of the circular ring 84 is socketed with the top of the outer wall of the inner tube 4.

[0022] The inner tube 4 is hollow, and a strip-shaped through groove is formed on the side wall of the inner tube 4 .

[0023] Working principle: When installing and reinforcing the pile body, a detailed geological survey is carried out in advance to understand the underground soil layer, rock layer, groundwater level, etc. First, a hole is drilled in the rock and soil layer 1 by a drilling machine, and the pile hole is reserved in advance. When drilling, the entrance is expanded outward to leave a position for grouting, and then the round tube 2 and the steel bar 6 are welded. When the steel bar 6 is welded in an annular shape, the binding hoop 7 is then sleeved on the outer wall of the steel bar 6. At the same time, the welding work is carried out so that the steel bar 6 and the binding hoop 7 form a complete steel cage, and then the pile is driven in. Before the pile hole is drilled, the inner rod 3 is inserted into the round hole of the round tube 2, and the spherical end of the inner rod 3 is inserted. After the above preparations are completed, the whole is hoisted and smoothly inserted into the pile hole, and then the inner tube 4 is lowered from the center. The bottom of the inner tube 4 is conical, and it contacts with the spherical end of the inner rod 3. In addition, a ball 5 is also arranged at the bottom of the inner tube 4. The ball 5 can rotate and roll when it fits. It cooperates with the inner tube 4 to push the inner rod 3 outward. The protruding part of the inner rod 3 is inserted around the rock and soil layer 1. If the upper and lower double The arrangement of the rows is presented with four corners inserted to make the whole more solid. Before the grouting work is carried out, the outer tube 81 of the auxiliary structure 8 is sleeved from the top of the inner tube 4, and the bottom of the outer tube 81 is sleeved on the reserved external expansion entrance. The outer tube 81 at the bottom extends to the end of the pile hole at the same time. At the same time, an arc ring 82 is also provided on the inner wall of the outer tube 81. The arc ring 82 can make the interior have a certain curvature, and the ring 84 is connected by the support rod 83. The ring 84 can be sleeved with the top of the inner tube 4 to make the top of the inner tube 4 more Add stability, and then carry out grouting. Grouting is carried out through the gap left by the steel cage and the pile hole. Vibration is carried out while grouting to ensure that the concrete is dense, free of bubbles and voids. Auxiliary grouting is carried out through the auxiliary structure 8 to limit the grouting process to avoid grouting overflow. At the same time, the 4 inner tubes are hollow and have strip through grooves, which are also convenient for grouting. After the concrete is poured, proper maintenance is carried out to keep the concrete moist and prevent cracking. After it is completely solidified, a complete pile body is formed.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A municipal construction pile reinforcement device, characterized in that: The invention comprises a rock and soil layer (1), wherein a pile hole is arranged at the center of the rock and soil layer (1), a circular tube (2) is arranged at the bottom of the pile hole of the rock and soil layer (1), the inner cavity of the circular tube (2) is provided with a circular hole, the circular holes of the circular tube (2) are eight in number and are arranged in a double-row ring, an inner rod (3) is sleeved at the circular hole of the circular tube (2) and is clearance-fitted, the inner side of the inner rod (3) is spherically arranged, an inner tube (4) is sleeved at the center of the upper surface of the circular tube (2), the bottom end of the inner tube (4) is conical, a ball (5) is symmetrically sleeved at the bottom of the inner tube (4), and the side wall of the ball (5) fits the spherical end of the inner rod (3).

2. A municipal construction pile reinforcement device according to claim 1, characterized in that: A steel bar (6) is welded in an annular shape on the upper surface of the circular tube (2); the side wall of the steel bar (6) is gap-matched with the inner cavity of the pile hole of the rock and soil layer (1); and a binding hoop (7) is provided on the outer side wall of the steel bar (6).

3. A municipal construction pile reinforcement device according to claim 1, characterized in that: An auxiliary structure (8) is sleeved on the top of the pile hole of the rock and soil layer (1), and the inner side of the auxiliary structure (8) is sleeved on the top of the inner tube (4).

4. A municipal construction pile reinforcement device according to claim 3, characterized in that: The auxiliary structure (8) comprises an outer tube (81), the bottom of the outer wall of the outer tube (81) is sleeved with the top of the pile hole of the rock and soil layer (1), the inner wall of the outer tube (81) is fixedly connected with an arc ring (82), the top of the inner wall of the outer tube (81) is symmetrically fixedly connected with a support rod (83), the inner side walls of the two support rods (83) are fixedly connected with a circular ring (84), and the inner ring wall of the circular ring (84) is sleeved with the top of the outer wall of the inner tube (4).

5. A municipal construction pile reinforcement device according to claim 1, characterized in that: The inner tube (4) is hollow, and a strip-shaped through groove is provided on the side wall of the inner tube (4).

Images