Prefabricated underground diaphragm wall and construction method thereof

Abstract

The invention relates to a prefabricated underground diaphragm wall and a construction method thereof, and belongs to the technical field of underground enclosure structures and construction. The prefabricated underground diaphragm wall comprises a prefabricated joint and a prefabricated diaphragm wall body, wherein the prefabricated joint and the prefabricated diaphragm wall body are connected with each other, the section of the prefabricated joint is in an I shape, the concave surfaces on the left side and the right side are in a semi-arc shape and are made of reinforced concrete, an impact-resistant pipe is arranged in the middle, and joint reserved bolt holes are formed in the upper surface and the lower surface. The prefabricated diaphragm wall body is composed of a plurality of prefabricated diaphragm wall body sections with rectangular sections, the upper surfaces and the lower surfaces of the prefabricated diaphragm wall body sections are provided with wall reserved bolt holes,and the left sides and the right sides of the prefabricated diaphragm wall body sections are provided with convex bodies, grooves and connecting reserved bolt holes. The groove of the prefabricated diaphragm wall body section connected with the prefabricated joint is semicircular, and a water stop rubber pad is arranged on the contact surface. The prefabricated underground diaphragm wall is highin fabricating degree, convenient to lift and assemble, good in waterproof stress effect and high in maneuverability, and the problems that hoisting is inconvenient, sandy soil is backfilled at the joint and poured concrete is prone to streaming around can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of underground enclosure structures and construction, in particular to a prefabricated underground continuous wall and a construction method 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] Because in the city, the foundation pit project is often constructed in the downtown area, not only to ensure the stability and safety of the foundation pit itsel...

AI Technical Summary

Problems solved by technology

[0027] In order to solve the above-mentioned technical problems, the present invention provides a prefabricated underground continuous wall and its construction method, mainly for the purpose of developing a prefabricated underground continuous wall with a high degree of assembly, convenient assembly and hoisting, good waterproof force effect, and high mobility. The wall can effectively avoid the inconvenience of hoisting during the construction of the underground diaphragm wall, backfill the sand at the joint, and the problem that the concrete pouring is easy to bypass

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