Water-stop technology and device for joints of underground diaphragm wall

Abstract

The invention relates to the technical field of underground diaphragm wall joints, in particular to an underground diaphragm wall joint water-stopping process and a device thereof. The disclosed underground diaphragm wall joint water-stopping process includes three steps. The water stop device includes a water stop structure, and the water stop structure includes two fixed steel plates, two connecting steel plates, an inner steel cylinder, an outer steel cylinder, several layers, several support plates, a rubber layer, and a pretension roller. According to the present invention, the water-stopping technology for the joints of underground diaphragm walls can form several reliable water-stops at the joints of underground diaphragm walls, which can effectively solve the problem that conventional I-steel joints are easy to form on the contact surface between profiled steel and concrete. The seepage channel causes the problem of water leakage at the joints after the excavation of the foundation pit, thereby eliminating potential safety hazards. The joint water-stop device for the underground diaphragm wall proposed by it has a simple structure and can be prefabricated in advance, which is convenient for construction and installation, and reduces the difficulty of construction. Effectively improve construction efficiency and shorten construction period.

Description

technical field [0001] The invention relates to the technical field of underground diaphragm wall joints, more specifically, it relates to an underground diaphragm wall joint water-stopping process and a device thereof. Background technique [0002] The underground diaphragm wall is a kind of trenching machine used on the ground for basic engineering. Along the peripheral axis of the deep excavation project, a long and narrow deep trench is excavated under the condition of mud retaining wall. After the trench is cleaned, it is hung in the trench Reinforcement cages, and then use the conduit method to pour underwater concrete to form a unit trough section. In this way, a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. [0003] As a reliable deep foundation pit enclosure structure, the underground diaphragm wall has been widely used in subways and large-scale housing construction proje...

AI Technical Summary

Problems solved by technology

[0003] As a reliable deep foundation pit enclosure structure, underground diaphragm wall has been widely used in foundation pits of subways and large-scale housing construction projects. However, the concrete joint of the diaphragm wall in the construction process is a weak link. The conventional I-shaped The steel joint type is easy to form a seepage channel on the contact surface between the steel and the concrete, causing water leakage at the joint after the excavation of the foundation pit, forming a great safety hazard. In addition, the traditional underground diaphragm wall joint water-stop structure is complex in structure , can not be prefabricated in advance, it is not convenient for construction and installation, resulting in difficult construction, seriously affecting construction efficiency and prolonging the construction period

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