Overall hoisted prefabricated underground continuous wall structure and prefabricating and construction method thereof

Abstract

The invention discloses an overall hoisted prefabricated underground continuous wall structure and a prefabricating and construction method thereof. The overall hoisted prefabricated underground continuous wall structure comprises a prefabricated underground continuous wall body, joggling joints are correspondingly arranged at both ends of the prefabricated underground continuous wall body, and sealing grooves are formed respectively in the two sides of the wall body at the butt joint portion of a prefabricated underground continuous wall and are internally provided with water-swelling rubbersealing strips. The butt joint portion of the prefabricated underground continuous wall body is provided with a waterproof joggling structure, the strength is high, slide and dislocation occurring between the wall bodies can be effectively prevented, the waterproof function is achieved, and concrete cracking can be prevented; prestress steel bars are arranged at the two sides of the wall body, thestrength of the wall body can be improved, and the wall body is prevented from being damaged in the transportation process; the steel bars are reserved at the top of the wall body and facilitate subsequent machining; besides, the prefabricated underground continuous wall is prefabricated integrally, concrete pouring is not required later, and a crane is adopted for hoisting and assembly in the construction process, which helps to shorten the construction period.

Description

technical field [0001] The invention relates to the technical field of construction of a prefabricated assembled underground diaphragm wall in a subway station, in particular to an integral hoisting prefabricated underground diaphragm wall structure with a waterproof mortise joint structure at the wall joint and its prefabrication and construction method. Background technique [0002] With the advancement of my country's urbanization process, a large number of large and medium-sized cities have emerged. Due to the lagging development of public transportation, chaotic traffic order, rapid growth in the number of private cars, inadequate road facilities, dense population, large passenger flow, lack of scientific management of traffic, and unreasonable road network planning in various cities, traffic congestion is becoming more and more serious. The average speed of motor vehicles is as low as 10km / h, which greatly hinders the travel speed and efficiency of residents. Metro tra...

AI Technical Summary

Problems solved by technology

However, the root of this kind of mortise joint is small, and the relative rotation between the walls is easy to occur and cannot withstand large lateral earth pressure. The joint is easy to crack and damage, resulting in leakage at the joint

In order to prevent the concrete of the prefabricated underground diaphragm wall from cracking during the hoisting process, most prefabricated walls use prestressed steel strands. The tensioning process is post-tensioning, and only plain concrete is poured in the reserved holes, which is easy Cracks, reducing the waterproof function of the underground diaphragm wall

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