Combined structure cast-in-situ bored uplift pile combined with circular steel pipe

Abstract

The utility model belongs to the technical field of uplift engineering pile design, and particularly relates to a combined structure cast-in-situ bored uplift pile combined with a circular steel pipe, which comprises a cast-in-situ bored uplift pile structure and a circular steel pipe structure. The cast-in-situ bored uplift pile structure comprises a cast-in-situ bored pile body and a reinforcement cage arranged in the cast-in-situ bored pile body. The reinforcement cage comprises an outer stirrup structure, a reinforcing rib structure, a longitudinal stress rib structure and a sounding structure used for detecting the integrity of a pile body. The circular steel pipe structure is inserted into a reinforcement cage of the cast-in-situ bored uplift pile structure, the reinforcement cage comprises a steel pipe structure, a stud structure and a reinforcement ring structure, and the circular steel pipe structure and a longitudinal stress rib structure are combined for resisting uplift. The internal reinforcement cage of the uplift pile and the inserted steel structure are considered together to form a combined structure for uplift resistance, and compared with a traditional uplift pile which purely depends on the internal reinforcement cage for uplift resistance, the quantity of steel bars of the reinforcement cage is remarkably reduced, the construction difficulty is reduced under the same condition, and the pile diameter and the engineering quantity are further reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-uplift engineering pile design and manufacturing, and in particular relates to a combined structure bored cast-in-place anti-uplift pile that is combined with a circular steel pipe. Background Technology

[0002] Tension-resistant engineering piles are engineering pile foundations installed in engineering projects to provide resistance to uplift forces, primarily subjected to vertical tensile forces provided by the building structure. Tension-resistant engineering piles are reinforced concrete tension members. To meet requirements for crack resistance and durability, these piles typically have a high reinforcement ratio and dense reinforcement arrangement, posing significant challenges to design and construction.

[0003] Currently, in the design and construction of foundation pits using the reverse construction method, situations frequently arise where vertical force-transmitting components of the superstructure or composite structure need to be inserted into uplift piles to meet the anchorage requirements of the lower structure. However, in such cases, excessively dense reinforcement within the reinforcing cage of the uplift pile can obstruct the insertion of the superstructure. To meet the insertion requirements of the superstructure, the uplift piles need to be further enlarged, and the reinforcing cage further extended, resulting in significant engineering difficulty and increased workload. Utility Model Content

[0004] The purpose of this invention is to combine the internal steel reinforcement cage of the anti-uplift pile with the inserted steel structure to form a combined structure for anti-uplift. Compared with the traditional anti-uplift pile that relies solely on the internal steel reinforcement cage for anti-uplift, this significantly reduces the amount of steel reinforcement in the steel reinforcement cage, reduces construction difficulty under the same conditions, and further reduces the pile diameter and workload, thereby solving the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve this problem is:

[0006] A composite structure bored cast-in-place tension pile combined with a circular steel pipe, comprising:

[0007] A bored cast-in-place pull-out pile structure includes a bored cast-in-place pile body and a reinforcing cage disposed therein. The reinforcing cage includes an outer hoop structure disposed on the outermost layer of the reinforcing cage, a reinforcing bar structure arranged in a ring within the reinforcing cage, a longitudinal reinforcing bar structure arranged longitudinally within the reinforcing cage, and an acoustic testing structure for detecting the integrity of the pile body.

[0008] A circular steel pipe structure is inserted into the reinforcing cage of a bored cast-in-place anti-uplift pile structure. It includes a steel pipe structure, a stud structure evenly arranged on the outside of the steel pipe structure, and a reinforcing ring structure set on the inside of the steel pipe structure. The circular steel pipe structure and the longitudinal reinforcing bar structure jointly resist uplift.

[0009] In the above technical solution, the outer stirrup structure includes the outermost stirrup of the steel cage arranged in a spiral form on the outermost layer of the steel cage.

[0010] In the above technical solution, the acoustic measurement structure includes a number of acoustic measurement tubes arranged longitudinally inside the steel pipe cage, and each acoustic measurement tube is evenly spaced along the circumference of the steel pipe cage.

[0011] In the above technical solution, the sonic logging pipe is a circular steel pipe structure, and the sonic logging pipe is installed along its entire length from the ground to the bottom of the pile.

[0012] In the above technical solution, the longitudinal reinforcing bar structure includes a number of longitudinal reinforcing bars arranged in the reinforcing cage, and all the longitudinal reinforcing bars together form a circular tubular structure.

[0013] In the above technical solution, the reinforcing rib structure includes a plurality of reinforcing ribs arranged in a ring within the reinforcing rib cage, and each of the reinforcing ribs is arranged at intervals along the axial direction of the steel pipe cage within the reinforcing rib cage.

[0014] In the above technical solution, the steel pipe structure and the reinforcing cage are arranged concentrically, and it is a hollow circular steel column structure.

[0015] In the above technical solution, the stud structure includes steel structure studs evenly arranged on the outside of the steel pipe structure. The steel structure studs are installed on the steel pipe structure by factory prefabrication or on-site welding, and the spacing between each steel structure stud is 150mm x 150mm.

[0016] In the above technical solution, the radial direction of the steel structure stud is on the same straight line as one of the radial directions of the steel pipe structure.

[0017] In the above technical solution, the reinforcing bar ring structure includes a plurality of welded reinforcing bar rings arranged in a ring within the steel pipe structure, and each of the welded reinforcing bar rings is arranged at intervals along the axial direction of the steel pipe structure within the steel pipe structure.

[0018] In the above technical solution, the circular steel pipe structure is inserted into the bored cast-in-place anti-uplift pile structure during construction. A construction error distance is left between the studs set around the circular steel pipe and the reinforcing cage set inside the bored cast-in-place pile body to ensure smooth insertion.

[0019] The advantages and positive effects of this utility model are as follows: In this utility model, the internal steel cage of the anti-uplift pile is considered together with the inserted steel structure to form a combined structure for anti-uplift. Compared with the traditional anti-uplift pile that relies solely on the internal steel cage for anti-uplift, the amount of steel in the steel cage is significantly reduced. Under the same conditions, the construction difficulty is reduced, and the pile diameter and engineering volume are also reduced. Attached Figure Description

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of a circular steel pipe structure.

[0023] In the diagram: 1. Outermost stirrup of the reinforcing cage; 2. Sonic logging tube; 3. Longitudinal reinforcement of the reinforcing cage; 4. Reinforcing bar of the reinforcing cage; 5. Steel structure studs; 6. Steel pipe structure; 7. Internal welded reinforcing ring. Detailed Implementation

[0024] First, it should be noted that the specific structure, features, and advantages of this utility model will be described in detail below by way of examples. However, all descriptions are for illustrative purposes only and should not be construed as limiting the utility model in any way. Furthermore, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, can still be arbitrarily combined or deleted among these technical features (or their equivalents) to obtain more other embodiments of this utility model that may not be directly mentioned herein. Additionally, for the sake of simplifying the drawings, the same or similar technical features may be indicated only in one place in the same drawing.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The utility model will now be described in detail with reference to the accompanying drawings.

[0026] A composite structure bored cast-in-place tension pile combined with a circular steel pipe, comprising:

[0027] A bored cast-in-place pull-out pile structure includes a bored cast-in-place pile body and a reinforcing cage disposed therein. The reinforcing cage includes an outer hoop structure disposed on the outermost layer of the reinforcing cage, a reinforcing bar structure arranged in a ring within the reinforcing cage, a longitudinal reinforcing bar structure arranged longitudinally within the reinforcing cage, and an acoustic testing structure for detecting the integrity of the pile body.

[0028] A circular steel pipe structure is inserted into the reinforcing cage of a bored cast-in-place anti-uplift pile structure. It includes a steel pipe structure 6, a stud structure evenly arranged on the outside of the steel pipe structure 6, and a reinforcing ring structure set on the inside of the steel pipe structure 6. The circular steel pipe structure and the longitudinal reinforcing bar structure jointly resist uplift.

[0029] In this embodiment, as Figure 1 As shown, the bored cast-in-place tension pile includes: a bored cast-in-place tension pile structure and a circular steel pipe structure. The bored cast-in-place tension pile structure includes the bored cast-in-place pile body and its internal reinforcing cage; as shown... Figure 2 As shown, the circular steel pipe structure includes steel studs 5, a steel pipe structure 6, and an internal welded reinforcing steel ring 7. During construction, the circular steel pipe structure is inserted into the bored pile structure. A construction error distance is maintained between the studs surrounding the circular steel pipe and the reinforcing cage inside the bored pile body to ensure smooth insertion. This invention considers both the internal reinforcing cage of the pile and the inserted steel structure together to form a combined structure for pull-out resistance. Compared to traditional pull-out piles that rely solely on the internal reinforcing cage, this significantly reduces the amount of reinforcing steel in the cage, reducing construction difficulty under the same conditions, and further reducing the pile diameter and workload.

[0030] Furthermore, in this embodiment, the outer stirrup structure may include the outermost stirrup 1 of the steel cage, which is arranged in a spiral form on the outermost layer of the steel cage.

[0031] Furthermore, in this embodiment, the acoustic measurement structure may include a plurality of acoustic measurement tubes 2 arranged longitudinally within the steel pipe cage, with each acoustic measurement tube 2 arranged at uniform intervals along the circumference of the steel pipe cage.

[0032] Furthermore, in this embodiment, the sonic logging pipe 2 can be considered as a circular steel pipe structure, and the sonic logging pipe 2 is installed along its entire length from the ground to the bottom of the pile.

[0033] Furthermore, in this embodiment, the longitudinal reinforcing bar structure may include several longitudinal reinforcing bars 3 arranged within the reinforcing cage, and all the longitudinal reinforcing bars 3 together form a circular tubular structure.

[0034] Furthermore, in this embodiment, the reinforcing rib structure may include a plurality of reinforcing ribs 4 arranged in a ring within the reinforcing rib cage, with each reinforcing rib 4 arranged at intervals along the axial direction of the steel pipe cage within the reinforcing rib cage.

[0035] In the above technical solution, the reinforcing cage includes the outermost stirrups 1, sonic logging tubes 2, longitudinal reinforcement 3, and reinforcing bars 4. Specifically: the outermost stirrups 1 are generally spiral stirrups installed on the outermost layer of the reinforcing cage, primarily serving to resist shear forces. The sonic logging tubes 2 are circular steel pipes, running continuously from the ground to the pile bottom, mainly used to detect the integrity of the pile body. The longitudinal reinforcement 3 serves as longitudinal reinforcing steel, working together with the circular steel pipe structure to resist pull-out. The reinforcing bars 4 are arranged in a ring along the inside of the reinforcing cage, generally spaced 2 meters apart, which improves the overall integrity of the reinforcing cage.

[0036] Furthermore, in this embodiment, the steel pipe structure 6 can be arranged concentrically with the reinforcing cage, and is a hollow circular steel column structure.

[0037] Furthermore, in this embodiment, the stud structure may include steel studs 5 evenly arranged on the outside of the steel pipe structure 6. The steel studs 5 are installed on the steel pipe structure 6 by factory prefabrication or on-site welding, and the spacing between each steel stud 5 is 150mm x 150mm.

[0038] Furthermore, in this embodiment, it can also be considered that the radial direction of the steel structure stud 5 is on the same straight line as one of the radial directions of the steel pipe structure 6.

[0039] Furthermore, in this embodiment, the reinforcing bar ring structure may include a plurality of welded reinforcing bar rings 7 arranged in a ring within the steel pipe structure 6, with each welded reinforcing bar ring 7 arranged at intervals along the axial direction of the steel pipe structure 6 within the steel pipe structure 6.

[0040] In the above technical solution, the circular steel pipe structure includes steel structural studs 5, a steel pipe structure 6, and internal welded reinforcing rings 7. Specifically: the steel structural studs 5 are arranged on the outside of the steel pipe structure 6, prefabricated in the factory or welded on-site, generally spaced 150mm x 150mm, to ensure the connection between the steel pipe structure and the bored pile. The steel pipe structure 6 and the longitudinal reinforcement of the bored pile work together to resist pull-out. The internal welded reinforcing rings 7 are arranged circumferentially along the inner side of the steel pipe structure and welded to the steel pipe, generally spaced 0.5 meters apart, to ensure the connection between the steel pipe and the internal concrete.

[0041] During construction, the circular steel pipe structure is inserted into the bored cast-in-place anti-uplift pile structure. A construction error distance is left between the rivets set around the circular steel pipe and the reinforcing cage set inside the bored cast-in-place pile body to ensure smooth insertion.

[0042] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A composite structure bored cast-in-place anti-tension pile combined with a circular steel pipe, characterized in that: include: A bored cast-in-place pull-out pile structure includes a bored cast-in-place pile body and a reinforcing cage disposed therein. The reinforcing cage includes an outer hoop structure disposed on the outermost layer of the reinforcing cage, a reinforcing bar structure arranged in a ring within the reinforcing cage, a longitudinal reinforcing bar structure arranged longitudinally within the reinforcing cage, and an acoustic testing structure for detecting the integrity of the pile body. A circular steel pipe structure is inserted into the reinforcing cage of a bored cast-in-place anti-pull pile structure. It includes a steel pipe structure (6), a stud structure evenly arranged on the outside of the steel pipe structure (6), and a reinforcing ring structure set on the inside of the steel pipe structure (6). The circular steel pipe structure and the longitudinal reinforcing bar structure jointly resist pull-out.

2. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The outer stirrup structure includes the outermost stirrup of the steel cage (1) which is set in a spiral form on the outermost layer of the steel cage.

3. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The acoustic structure includes several acoustic tubes (2) arranged longitudinally inside the steel pipe cage, with each acoustic tube (2) evenly spaced along the circumference of the steel pipe cage.

4. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 3, characterized in that: The sonic logging tube (2) is a circular steel pipe structure, and the sonic logging tube (2) is installed along its entire length from the ground to the bottom of the pile.

5. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The longitudinal reinforcing bar structure includes several longitudinal reinforcing bars (3) arranged in the reinforcing cage, and all the longitudinal reinforcing bars (3) together form a circular tube structure.

6. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The reinforcing rib structure includes several annular reinforcing ribs (4) arranged in the reinforcing cage, and each reinforcing rib (4) is arranged at intervals along the axial direction of the steel pipe cage in the reinforcing cage.

7. The combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The steel pipe structure (6) is arranged concentrically with the steel reinforcement cage and is a hollow circular steel column structure.

8. A combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 7, characterized in that: The stud structure includes steel structure studs (5) evenly arranged on the outside of the steel pipe structure (6). The steel structure studs (5) are installed on the steel pipe structure (6) by factory prefabrication or on-site welding. The spacing between each steel structure stud (5) is 150mm x 150mm.

9. A combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 8, characterized in that: The radial direction of the steel structure stud (5) is on the same straight line as one of the radial directions of the steel pipe structure (6).

10. A combined structure bored cast-in-place anti-tension pile with a circular steel pipe according to claim 1, characterized in that: The steel reinforcement ring structure includes several welded steel reinforcement rings (7) arranged in a ring within the steel pipe structure (6), with each welded steel reinforcement ring (7) arranged at intervals along the axial direction of the steel pipe structure (6) within the steel pipe structure (6).

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