Building prestressed support structure for foundation pit protection with feedback regulation

By introducing an external protection mechanism and a pressure balancing component into the prestressed support structure for foundation pit protection, the problem of poor fit between the rubber waterstop and the concrete surface was solved, achieving stable connection and waterproofing effect of the waterstop.

CN116122295BActive Publication Date: 2026-06-16QINGDAO ZHONGJIAN COMBINATION CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO ZHONGJIAN COMBINATION CONSTR ENG CO LTD
Filing Date
2022-12-05
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In existing prestressed support structures for foundation pit protection, the water-swellable rubber waterstops do not fit well with the concrete surface, are prone to falling off, and lack of buffer space makes the connection structure easily damaged.

⚗Method used

The prestressed support structure for foundation pit protection with feedback adjustment is adopted, including an external protection mechanism, control components and pressure balancing components. Through the cooperation of external bladder and non-Newtonian fluid, the toughness and tear resistance of the rubber waterstop are enhanced, and the expansion rate is adjusted by the pressure balancing device to ensure water-stopping effect and connection stability.

🎯Benefits of technology

It effectively prevents damage to the rubber waterstop by tamping pressure, enhances load-bearing capacity, ensures water-stopping effect and connection stability, has strong adaptability to deformation, is easy to install, and avoids falling off.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116122295B_ABST
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Abstract

The application discloses a building prestress support structure with feedback adjustment for foundation pit protection, which comprises a foundation mechanism and a foundation pit support, a transverse joint is reserved between the foundation pit support and the extrusion mechanism, and a water-swelling rubber waterstop is embedded in the transverse joint. The outer protection mechanism, the water-swelling rubber waterstop and the pressure balance assembly are matched with each other, the support force of the concrete pouring body and the reinforcing steel is utilized, the outer hanging capacity of the connecting body is effectively enhanced, the load capacity is improved in quality, the water-swelling rubber waterstop is prevented from being damaged by the pouring pressure during pouring, the water-swelling rubber waterstop is prevented from being punctured by hard objects such as sharp stones and reinforcing steel, the water-stopping effect of the water-swelling rubber waterstop is effectively ensured, the deformation adaptability is high, the installation is simple, the concrete pouring body is combined firmly, and the water-swelling rubber waterstop is effectively prevented from falling off.
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