Novel rectangular sleeve structure fabricated diaphragm wall horizontal joint and construction method

By using a novel rectangular sleeve structure prefabricated diaphragm wall horizontal joint, combined with convex-concave fit and cement-based composite waterproof material, the problems of construction complexity and poor seepage prevention effect of traditional connection methods are solved, realizing efficient connection and bending load-bearing capacity of diaphragm walls, which is suitable for various underground engineering scenarios.

CN121853553APending Publication Date: 2026-04-14HANGZHOU METRO GRP CO LTD +3
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Patent Information

Application Number
CN202610211584.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Traditional horizontal connection methods for diaphragm walls are complex to construct, have insufficient connection strength, and poor seepage prevention, making it difficult to meet the industrialized and efficient construction requirements of prefabricated diaphragm walls.

Method used

The new type of prefabricated horizontal joint for diaphragm walls adopts a rectangular sleeve structure, which includes a sleeve, a groove, a convex rectangular body and embedded parts. Multiple mechanical interlocking is formed through the convex and concave fit. Combined with cement-based composite waterproof material, the connection strength and seepage prevention performance are enhanced. The construction process adopts the method of factory prefabrication and on-site assembly.

Benefits of technology

It improves the connection strength and seepage prevention performance of diaphragm walls, simplifies the construction process, reduces costs, is suitable for various underground engineering scenarios, enhances bending load-bearing capacity, and meets the needs of foundation pit support in narrow spaces.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention relates to a novel rectangular sleeve structure assembly type diaphragm wall horizontal joint and a construction method. The novel rectangular sleeve structure assembly type diaphragm wall horizontal joint comprises a sleeve, a clamping groove, a convex rectangular body and an embedded part. The connecting structure has the beneficial effects that the upper and lower diaphragm wall components are reliably connected, multiple mechanical occlusion is formed through concave-convex matching of the rectangles and the sleeves, the connecting strength of the upper and lower sections of diaphragm walls is greatly improved, and the overall stability of the structure is guaranteed; meanwhile, the upper and lower diaphragm wall components are good in impermeability, the seepage path of water is effectively blocked through the concave-convex matched joint form, and the impermeability of the underground diaphragm wall is improved; the underground diaphragm wall prefabricated assembly type structure is convenient to construct, factory prefabrication and on-site assembly of the assembly type structure are achieved, the construction process is simplified, the construction efficiency is improved, and the construction cost is reduced; the fabricated structure is regular in shape and wide in applicability, the specifications of the convex rectangular bodies, the sleeves and the embedded parts can be adjusted according to the size and load requirements of different underground diaphragm walls, and the fabricated structure is suitable for various underground engineering scenes.
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