CN216948318U

CN216948318U - Double-row pile prestressed anchor cable composite supporting structure

Info

Publication number: CN216948318U
Application number: CN202220224426.5U
Authority: CN
Inventors: 廖宜平; 李凯; 蔡超亮
Original assignee: Zhejiang Zhongnan Construction Group Co Ltd
Current assignee: Zhejiang Zhongnan Construction Group Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-07-12
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a double-row pile prestressed anchor cable composite supporting structure, which comprises: the pile comprises a front row of pile bodies and a rear row of pile bodies which are arranged on one side of the front row of pile bodies and are parallel to the front row of pile bodies, wherein the upper ends of the front row of pile bodies are fixedly provided with front row pile cap supports, the utility model is characterized in that a back row pile cap is fixedly arranged at the upper end of the back row pile body, a triangular support beam is fixedly connected among the back row pile cap, the front row pile cap and the back row pile body, a support beam is fixedly connected between the lower side wall of the triangular support beam and the front row pile body, under the combined action of the triangular support beam and the support beam, the back row pile cap, the front row pile cap and the back row pile body are connected and fixed, so that the back row pile cap and the front row pile cap are not easy to deviate, the structural stability between the front row pile body and the rear row pile body can be greatly improved, so that the variation of a deflection line between the front row pile body and the rear row pile body is consistent, and the bending resistance and the integral lateral stiffness of the double-row pile are improved.

Description

Double-row pile prestressed anchor cable composite supporting structure

Technical Field

The utility model belongs to the related technical field of foundation pit support, and particularly relates to a double-row pile prestressed anchor cable composite support structure.

Background

With the development of urban construction, deep foundation pit engineering emerges endlessly, and various novel supporting modes emerge therewith. The double-row pile supporting structure has the advantages of good deformation control effect on the foundation pit, strong stability of the supporting structure, wide application range and the like, and is widely applied to the field of domestic deep foundation pit engineering in recent years. The conventional supporting structure form hardly meets the current design specification requirements due to the overturn resistance and the displacement. The patent number is CN201220661066.1, in the name of a double row pile supporting construction with deep prestressed anchorage cable, it includes multiunit parallel arrangement and is the front row pile and the back row pile of h type arrangement, guan liang I, guanliang II, tie beam, big inclination prestressed anchorage cable and waist rail. The integral rigidity of the h-shaped double-row pile formed by the front row of piles and the rear row of piles connected through the connecting beam is extremely high, and larger resistance can be provided; and after the large-dip-angle prestressed anchor cables are driven into the rear row of piles, the anti-overturning capability of the supporting structure can be effectively improved. However, the scheme still has the following defects: the front row of piles and the rear row of piles are connected only by the connecting tie beam, so that the overall stability between the front row of piles and the rear row of piles is poor, the change of a deflection line between the front row of piles and the rear row of piles is possibly inconsistent, and the bending resistance and the overall lateral stiffness of the double-row piles are greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-row pile pre-stressed anchor cable composite supporting structure, which aims to solve the problem that the integral stability between a front row of piles and a rear row of piles is poor due to the fact that the front row of piles and the rear row of piles are connected only by connecting beams in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: double row pile prestressed anchorage cable composite support structure, it includes: the pile comprises a front row of piles and a rear row of piles, wherein the rear row of piles is arranged on one side of the front row of piles and is parallel to the front row of piles, a front row of pile pressing top beam is fixedly mounted at the upper end of the front row of piles, a rear row of pile pressing top beam is fixedly mounted at the upper end of the rear row of piles, a triangular support beam is fixedly connected among the rear row of pile pressing top beam, the front row of pile pressing top beam and the rear row of piles, a support beam is fixedly connected between the lower side wall of the triangular support beam and the front row of piles, and a prestressed anchor cable body for tensioning the front row of piles and the rear row of piles is arranged between the front row of piles and the rear row of piles.

Preferably, an anchoring part is fixed at one end of the prestressed anchor cable body, a return-blocking hook is fixed at the bottom of the anchoring part, and an anchoring end block is fixed at the other end of the prestressed anchor cable body and is positioned on the outer wall of the front side of the front row of piles.

Preferably, the inside of back row pile body is fixed with first spacing post, the inside of the back row pile body of first spacing post upside is fixed with the spacing post of second, first spacing post and the spacing post of second stagger around being and distribute.

Preferably, the prestressed anchor cable body penetrates through the front row of piles and the rear row of piles, the prestressed anchor cable body is wound on the outer wall, close to the upper side, of the second limiting column and on the outer wall, close to the lower side, of the first limiting column, and the prestressed anchor cable body located inside the rear row of piles is S-shaped.

Preferably, the support beam and the triangular support beam are fixedly connected through welding.

Compared with the prior art, the utility model provides a double-row pile prestressed anchor cable composite supporting structure, which has the following beneficial effects:

according to the utility model, the triangular support beam is fixedly connected among the back row pile cap, the front row pile cap and the back row pile body, the support beam is fixedly connected between the lower side wall of the triangular support beam and the front row pile body, and the back row pile cap, the front row pile cap and the back row pile body are connected and fixed under the combined action of the triangular support beam and the support beam, so that the back row pile cap and the front row pile cap are not easy to deviate, the structural stability between the front row pile body and the back row pile body can be greatly improved, the deflection lines between the front row pile body and the back row pile body are consistent in change, and the bending resistance of double rows of piles and the integral lateral stiffness are improved;

the anti-return hook is fixed at the bottom of the anchoring part at the end part of the prestressed anchor cable body, so that the gripping force of the anchoring part on concrete can be greatly improved under the action of the anti-return hook, the prestressed anchor cable body cannot displace during traction, and the safety performance and the anti-overturning capacity are greatly improved;

third, the first limiting column and the second limiting column are fixed inside the rear row of pile bodies, the prestressed anchor cable bodies are wound on the outer walls of the first limiting column and the second limiting column, and the first limiting column and the second limiting column are used as supports of the prestressed anchor cable bodies inside the rear row of pile bodies, so that firmness of the prestressed anchor cable bodies inside the rear row of pile bodies is improved, the prestressed anchor cable bodies can act on the front row of pile bodies and the rear row of pile bodies simultaneously, the anti-overturning capacity of the supporting structure is greatly improved, and the structural stability between the front row of pile bodies and the rear row of pile bodies can be further improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic plane structure diagram of a double-row pile prestressed anchor cable composite supporting structure provided by the utility model;

FIG. 2 is a schematic structural view of a prestressed anchor cable body and a rear row of piles according to the present invention;

FIG. 3 is a schematic view of the proposed structure;

in the figure: 1. pressing a top beam of the back row of piles; 2. a triangular support beam; 3. pressing a top beam by the front row of piles; 4. a support beam; 5. an anchor end block; 6. front row of pile bodies; 7. a rear row of pile bodies; 8. a first limit post; 9. a second limit post; 10. a pre-stressed anchor cable body; 11. an anchoring member; 12. blocking the hook.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: double row pile prestressed anchorage cable composite support structure, it includes: the pile comprises a front row of piles 6 and a rear row of piles 7 which are arranged on one side of the front row of piles 6 and are parallel to the front row of piles 6, wherein the upper end of the front row of piles 6 is fixedly provided with a front row of pile capping beams 3, the upper end of the rear row of piles 7 is fixedly provided with a rear row of pile capping beams 1, triangular support beams 2 are fixedly connected among the rear row of pile capping beams 1, the front row of pile capping beams 3 and the rear row of piles 7, the rear row of pile capping beams 1, the front row of pile capping beams 3 and the rear row of piles 7 are fixedly connected through the triangular support beams 2, the rear row of pile capping beams 1 and the front row of pile capping beams 3 are ensured not to be easily deviated, supporting beams 4 are fixedly connected between the lower side wall of the triangular support beams 2 and the front row of piles 6, the structural stability between the front row of piles 6 and the rear row of piles 7 can be greatly improved under the action of the supporting beams 4, the deflection line between the front row of piles and the front row of piles is consistent, the bending resistance and the whole lateral rigidity of double row of piles is improved, and a prestressed anchor cable body 10 for tensioning the front row of piles 6 and the rear row of piles 7 is arranged between the front row of piles 6 and the rear row of piles 7, and the rear row of piles 7 can be tensioned through the prestressed anchor cable body 10, so that the anti-overturning capability of the supporting structure can be effectively improved.

The one end of the prestressed anchor cable body 10 is fixed with anchor assembly 11, the bottom of anchor assembly 11 is fixed with hinders the return hook 12, under the effect that hinders the return hook 12, can improve anchor assembly 11 the power of grabbing to the concrete greatly, make the prestressed anchor cable body 10 can not take place the displacement when pulling, improve security performance and antidumping ability greatly, the other one end of prestressed anchor cable body 10 is fixed with anchor end block 5, anchor end block 5 is located the front side outer wall of front row pile body 6, prestressed anchor cable body 10 can pull the effect to front row pile body 6 and back row pile body 7 simultaneously.

The inside of back row pile body 7 is fixed with first spacing post 8, and the inside of back row pile body 7 of the 8 upsides of first spacing post is fixed with spacing post 9 of second, and first spacing post 8 and the spacing post 9 of second stagger around being and distribute. The prestressed anchor cable body 10 penetrates through the front row of pile bodies 6 and the rear row of pile bodies 7, the prestressed anchor cable body 10 is wound on the outer wall, close to the upper side, of the second limiting column 9 and wound on the outer wall, close to the lower side, of the first limiting column 8, the first limiting column 8 and the second limiting column 9 are used as supports of the prestressed anchor cable body 10 inside the rear row of pile bodies 7, firmness of the prestressed anchor cable body 10 inside the rear row of pile bodies 7 is improved, the prestressed anchor cable body 10 inside the rear row of pile bodies 7 is S-shaped, and structural stability between the prestressed anchor cable body 10 and the rear row of pile bodies 7 is greatly improved.

A supporting beam 4 and a triangular support beam 2 are fixedly connected through a welding mode, the structural stability between the supporting beam 4 and the triangular support beam 2 is greatly improved, and the safety performance is greatly improved.

The working principle and the using process of the utility model are as follows: when the method is used for working, firstly, the arrangement form of the front row of piles 6 and the rear row of piles 7 and the tension value of the prestressed anchor cable body 10 are determined according to the survey report of a construction site and the checking and calculating result of the stability of foundation pit support, the first limit column 8 and the second limit column 9 are installed inside the rear row of piles 7 and penetrate into the prestressed anchor cable body 10, the prestressed anchor cable body 10 is wound on the outer wall of the upper side of the second limit column 9 and on the outer wall of the lower side of the first limit column 8, the first limit column 8 and the second limit column 9 are used as the support of the prestressed anchor cable body 10 inside the rear row of piles 7, the anchoring piece 11 at one end of the prestressed anchor cable body 10 is buried inside a stable rock body for grouting and compacting, the prestressed anchor cable body 10 is tensioned, the prestressed anchor cable body 10 is fixed on the outer wall of the front row of piles 6 through the anchoring end block 5 after tensioning, so that the prestressed anchor cable body 10 can simultaneously act on the front row of piles 6 and the rear row of piles 7, the anti-overturning capability of the supporting structure is greatly improved, the front row pile bodies 6 and the rear row pile bodies 7 can be stably connected, and the overall stability of the front row pile bodies 6 and the rear row pile bodies 7 is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Double row pile prestressed anchorage cable composite support structure, its characterized in that, it includes: the pile structure comprises a front row pile body (6) and a rear row pile body (7) which is arranged on one side of the front row pile body (6) and is parallel to the front row pile body (6), wherein a front row pile cap (3) is fixedly arranged at the upper end of the front row pile body (6), a rear row pile cap (1) is fixedly arranged at the upper end of the rear row pile body (7), a triangular support beam (2) is fixedly connected among the rear row pile cap (1), the front row pile cap (3) and the rear row pile body (7), a support beam (4) is fixedly connected between the lower side wall of the triangular support beam (2) and the front row pile body (6), and a pre-stressed anchor cable body (10) which tensions the front row pile body (6) and the rear row pile body (7) is arranged between the front row pile body (6) and the rear row pile body (7).

2. The double-row pile prestressed anchor cable composite supporting structure of claim 1, wherein: an anchoring piece (11) is fixed at one end of the prestressed anchor cable body (10), a return-stopping hook (12) is fixed at the bottom of the anchoring piece (11), an anchoring end block (5) is fixed at the other end of the prestressed anchor cable body (10), and the anchoring end block (5) is located on the outer wall of the front side of the front row of pile bodies (6).

3. The double-row pile prestressed anchor cable composite supporting structure of claim 1, wherein: the inside of back row pile body (7) is fixed with first spacing post (8), the back row pile body (7) inside of first spacing post (8) upside is fixed with spacing post (9) of second, stagger distribution around first spacing post (8) and the spacing post (9) of second are.

4. The double-row pile prestressed anchor cable composite supporting structure of claim 1, wherein: the prestressed anchor cable body (10) penetrates through the front row of pile bodies (6) and the rear row of pile bodies (7), the prestressed anchor cable body (10) is wound on the outer wall, close to the upper side, of the second limiting column (9) and on the outer wall, close to the lower side, of the first limiting column (8), and the prestressed anchor cable body (10) located inside the rear row of pile bodies (7) is S-shaped.

5. The double-row pile prestressed anchor cable composite supporting structure of claim 1, wherein: the supporting beam (4) and the triangular support beam (2) are fixedly connected in a welding mode.