A protection device for pool foundation pit

CN224395575UActive Publication Date: 2026-06-23WEST AIRPORT GRP CONSTR ENG XIAN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WEST AIRPORT GRP CONSTR ENG XIAN CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The existing foundation pit protection devices are insufficient in controlling horizontal displacement, leading to seepage damage under the influence of groundwater level changes and surrounding loads. This makes it difficult to meet the high requirements for waterproofing performance of water tank-type structures and poses safety hazards during construction.

Method used

The protective device adopts a multi-layered reinforced structure, including a three-dimensional support system consisting of double-ribbed bars built into the main guardrail, reinforcing rib seats and reinforcing rib columns inside the hollow core plate, combined with modular design and quick fixing with locking bolts, forming a highly efficient anti-seepage protection.

Benefits of technology

It effectively reduced the deformation of the foundation pit, improved the compressive strength and impermeability, increased construction efficiency and reusability, and reduced project costs.

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Abstract

This utility model relates to the field of foundation pit protection technology and discloses a protective device for water tank foundation pits. It comprises at least one set of two main protective railings, two connecting plates, and secondary protective railings equidistantly arranged between the two connecting plates. Movable seats are fixedly installed at equal intervals on the inner side of each connecting plate. This device achieves overall optimization of the protection system through a multi-layered reinforcement structure. The double-rib design built into the main protective railings forms a parallel reinforcement structure, effectively resisting the horizontal earth pressure on the sidewalls of the foundation pit. Experimental calculations show that under the same load conditions, the deformation of the railing is reduced by more than 40% compared to traditional single-layer structures. The hollow core slab uses a grid structure composed of reinforcing rib seats and reinforcing rib columns to form a three-dimensional support system. The diameter of the reinforcing rib columns is 1 / 3 to 1 / 2 of the height of the reinforcing rib seats, and the surface is provided with annular reinforcing ribs. This parameter configuration increases the compressive strength of the hollow core slab to over 8 MPa.
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