CN-224227808-U - Restraint device for preventing upper part of foundation pit guard pile from being outwards inclined

Abstract

The utility model discloses a restraint device for preventing the upper part of a foundation pit guard pile from being outwards inclined, and belongs to the technical field of foundation pit engineering. The steel support system comprises a fender post, wherein an enclosing purlin is arranged on the inner side surface of the fender post, a reverse pulling support structure is arranged on the outer side surface of the fender post, a limit constraint block is arranged inside the enclosing purlin, a support block is arranged outside the enclosing purlin, a connecting plate is arranged on the upper surface of the support block and the upper surface of the limit constraint block together, and a steel support system is arranged at the end part of the support block. According to the utility model, the limiting constraint blocks are matched with the connecting plates, the guard piles, the purlins and the supporting blocks are connected together to form a whole body with the steel supporting system, so that a whole body stress system is constructed, when the lower parts of the guard piles are displaced into the foundation pit, the uppermost steel supporting system provides reverse tension constraint, the horizontal displacement of pile tops is controlled in a stable range, and the outer inclination instability of the upper parts of the guard piles is thoroughly avoided.

Inventors

• YU HUA
• GU YOUGEN

Assignees

• 瑞马丸建(安徽)工程支护科技有限公司

Dates

Publication Date

20260512

Application Date

20250604

Claims (6)

1. 1. The restraining device for preventing the upper part of the foundation pit guard post from being outwards inclined comprises a guard post (1) and is characterized in that a purlin (2) is arranged on the inner side surface of the guard post (1), and a reverse pulling supporting structure (3) is arranged on the outer side surface of the guard post (1); The surface of the reverse pulling support structure (3) is also provided with a reverse pulling screw rod (4), both ends of the reverse pulling screw rod (4) are provided with fastening bolts (401), one end of the reverse pulling screw rod (4) penetrates through the reverse pulling support structure (3) and is fixed with the reverse pulling support structure (3) through the fastening bolts (401), and the other end of the reverse pulling screw rod (4) penetrates through the enclosing purlin (2) and is fixed with the enclosing purlin (2) through the fastening bolts (401); The inside of enclosing purlin (2) be provided with spacing constraint piece (5), the outside of enclosing purlin (2) is provided with supporting shoe (6), the upper surface of supporting shoe (6) and spacing constraint piece (5) is provided with connecting plate (7) jointly, supporting shoe (6), spacing constraint piece (5) are assembled with connecting plate (7) through the bolt respectively, the tip of supporting shoe (6) is provided with steel braced system (8).
2. 2. The restraining device for preventing the upper portion of the foundation pit guard pile from being outwards inclined is characterized in that two groups of limiting restraining blocks (5) are arranged and are respectively arranged on the upper side and the lower side of a web plate of the surrounding purlin (2), and connecting plates (7) are correspondingly arranged on the surfaces of the limiting restraining blocks (5) in each group.
3. 3. A restraint device for preventing the upper portion of a foundation pit fender pile from being inclined outward according to claim 1, wherein the steel support system (8) comprises a steel beam (801) and a jack (802), and the jack (802) is installed between the steel beam (801) and the supporting block (6).
4. 4. A restraining device for preventing an upper portion of a foundation pit guard pile from being inclined outwards according to claim 3, wherein a protective cover (803) is arranged on the outer side of the jack (802), and two ends of the protective cover (803) are assembled with the steel beam (801) and the supporting block (6) respectively.
5. 5. The restraining device for preventing the upper portion of the foundation pit fender post from being inclined outwards according to claim 1, wherein the bottom of the fender post (2) is provided with a supporting bracket (9), one side face of the supporting bracket (9) is fixed with the fender post (1), and the upper end face of the supporting bracket (9) is fixed with the fender post (2).
6. 6. The restraining device for preventing the foundation pit guard pile from being inclined outwards according to claim 5, wherein a first limiting block (10) is arranged on the upper surface of the supporting bracket (9), a second limiting block (11) is arranged on the inner side surface of the guard pile (1), the enclosing purlin (2) is placed on the upper surface of the supporting bracket (9), the inner side surface of the enclosing purlin (2) is in contact with the first limiting block (10), and the outer side surface of the enclosing purlin (2) is in contact with the second limiting block (11).

Description

Restraint device for preventing upper part of foundation pit guard pile from being outwards inclined Technical Field The utility model relates to the technical field of foundation pit engineering, in particular to a restraint device for preventing the upper part of a foundation pit guard pile from being outwards inclined. Background The foundation pit support is a temporary support, reinforcement and groundwater control measure adopted for the side wall of the foundation pit and the adjacent environment in order to ensure the construction safety of the underground structure and the stability of the surrounding environment of the foundation pit. The side wall of the foundation pit is supported by a guard pile structure, and the active soil pressure generated by the soil body at the lower part of the guard pile is gradually increased along with the increase of the excavation depth of the foundation pit. When the soil pressure exceeds the compression bearing capacity inside the fender post, the deformation displacement of the maximum bending moment area generated by the lower part of the fender post into the foundation pit is caused, and the pile top is possibly caused to be inclined outwards and unstable under severe conditions. Disclosure of utility model 1. Technical problem to be solved by the utility model The utility model aims to overcome the defects of the prior art and provides a restraint device for preventing the upper part of a foundation pit fender post from being outwards inclined, the fender post, the enclosing purlin and the supporting block are jointly connected with a steel supporting system to form a whole through the cooperation of a limit restraint block and a connecting plate, namely the fender post, the enclosing purlin and the steel supporting system are constructed into a whole stress system, therefore, when the lower part of the fender post receives the soil pressure to generate deformation displacement in a maximum bending moment area in the foundation pit, the uppermost layer steel support system transmits reverse tension force, so that the horizontal displacement of the pile top is controlled in a stable range, the risk of camber instability is thoroughly eliminated, and the overall stability and safety redundancy of the foundation pit support system are obviously improved. 2. Technical proposal In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: The restraining device for preventing the upper part of the foundation pit fender post from being outwards inclined comprises a fender post, wherein the inner side surface of the fender post is provided with a fender purlin, and the outer side surface of the fender post is provided with a reverse pulling supporting structure; The surface of the reverse pulling support structure is also provided with a reverse pulling screw rod, both ends of the reverse pulling screw rod are provided with fastening bolts, one end of the reverse pulling screw rod penetrates through the reverse pulling support structure and is fixed with the reverse pulling support structure through the fastening bolts, and the other end of the reverse pulling screw rod penetrates through the enclosing purlin and is fixed with the enclosing purlin through the fastening bolts; the inside of enclosing the purlin be provided with spacing restraint piece, the outside of enclosing the purlin is provided with the supporting shoe, the supporting shoe is provided with the connecting plate jointly with the upper surface of spacing restraint piece, supporting shoe, spacing restraint piece assemble with the connecting plate through the bolt respectively, the tip of supporting shoe is provided with steel braced system. Further, the limiting and restraining blocks are provided with two groups, the limiting and restraining blocks are respectively arranged on the upper side and the lower side of the surrounding purlin web plate, and the surfaces of each group of limiting and restraining blocks are correspondingly provided with connecting plates. Further, the steel support system comprises a steel beam and a jack, and the jack is arranged between the steel beam and the support block. Further, the outside of jack be provided with the safety cover, the both ends of safety cover are assembled with girder steel, supporting shoe respectively. Further, the bottom of enclosing the purlin be provided with the support bracket, a side of support bracket is fixed with the fender post, the up end of support bracket is fixed with enclosing the purlin. Further, the upper surface of support bracket be provided with first stopper, the medial surface of fender post is provided with the second stopper, encloses the purlin and places the upper surface at the support bracket, encloses the medial surface and the contact of first stopper of purlin, encloses the lateral surface and the contact of second stopper of purlin. 3. Advantageous effects Compared with th