A counter-pulling plate structure for foundation pit support

By designing a reverse tie plate structure in the foundation pit support and using steel reinforcement components and pre-tightening devices to pre-tighten the curved steel bars before concrete pouring, the problem of insufficient overall support at the diagonal of the reverse tie plate was solved, the support reliability of the external corner of the foundation pit was improved, and the occurrence of engineering accidents was reduced.

CN224378897UActive Publication Date: 2026-06-19CHINA RAILWAY CONSTR GRP SOUTHERN ENG CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY CONSTR GRP SOUTHERN ENG CO LTD
Filing Date
2025-06-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing anti-pull plate design for foundation pit support does not adequately improve the overall integrity of the diagonal support, leading to a higher probability of engineering accidents.

Method used

A reverse tension plate structure for foundation pit support is designed, including a reverse tension plate body and a foundation pit corner. By utilizing steel reinforcement components, casting templates and pre-tightening devices, the curved steel reinforcement is pre-tightened before concrete pouring. The pre-tightening force is released after the concrete reaches the design strength, thereby improving the overall support integrity of the foundation pit corner.

Benefits of technology

The design of the pre-tightening device enhances the overall support of the external corner of the foundation pit, reduces construction disturbance, and lowers the probability of engineering accidents.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224378897U_ABST
    Figure CN224378897U_ABST
Patent Text Reader

Abstract

A reverse-pull plate structure for foundation pit support belongs to the field of foundation pit support engineering technology. This utility model solves the technical problem that existing reverse-pull plate designs for foundation pit support suffer from insufficient improvement in the overall support integrity at the diagonal corners, resulting in a still relatively high probability of engineering accidents. Support piles are installed at the external corner of the foundation pit, and the reverse-pull plate body is positioned on top of several support piles. The apex angle of the reverse-pull plate body is the same as the angle of the external corner of the foundation pit. A casting template is arranged outside the reinforcing steel assembly, which includes main reinforcing bars, supporting reinforcing bars, and curved reinforcing bars. Two main reinforcing bars are fixedly connected in a T-shape, and the supporting reinforcing bars are connected to the T-shaped ends of the main reinforcing bars. Several curved reinforcing bars are arranged perpendicular to the direction of the supporting reinforcing bars. One end of each curved reinforcing bar is fixedly connected to the main reinforcing bar, and the other end is connected to the casting template via a pre-tightening device. This improves the overall support integrity at the external corner of the foundation pit. This utility model is used for foundation pit support.
Need to check novelty before this filing date? Find Prior Art