Self-resetting assembled underground diaphragm wall, material and preparation method

Abstract

The invention discloses a self-resetting assembled underground diaphragm wall which is formed by a plurality of mutually connected prefabricated underground diaphragm wall bodies. Two bolt holes are reserved in each of the upper side and the lower side of each prefabricated underground diaphragm wall body, and three bolt holes are reserved in each of the two sides of each prefabricated undergrounddiaphragm wall body. Each prefabricated diaphragm wall body comprises a main body; a fiber cloth layer and a tough waterproof layer are sequentially pasted to each of the inner surface and the outersurface of the main body from inside to outside; and each tough waterproof layer comprises a graphene modified natural rubber nanocomposite layer and an SBS self-adhesion modified asphalt layer. The main bodies of the assembled underground diaphragm wall are made of a nickel-titanium alloy cement-based engineering composite material; and nickel-titanium alloy steel bars are arranged in the main bodies. Through the assembled structure and manufacturing method, the on-site formwork erecting and pouring work procedures of the underground diaphragm wall are reduced. When the underground diaphragmwall is damaged after an earthquake occurs, the underground diaphragm wall can be automatically reset to a certain extent. The installation is simple; the maintenance is convenient; installation working hours on a construction site can be greatly saved; and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of subway station construction, in particular to a novel material assembled ground connection wall and a connection method. Background technique [0002] Urban rail transit is a symbol of urban development. It can relieve the pressure of ground transportation, save energy and facilitate residents to travel quickly. It is the best means to relieve urban traffic congestion. In the past, due to the backwardness of underground engineering technology and the limitation of the number of constructions, there were few cases of earthquake damage. In addition, the structure was constrained by the surrounding soil. Some scholars at home and abroad believe that the seismic capacity of underground structures is relatively good. The degree of damage under load conditions is lighter than that of above-ground buildings, so the research on the seismic resistance of underground structures started relatively late, and the relevant seism...

AI Technical Summary

Problems solved by technology

In the past, due to the backwardness of underground engineering technology and the limitation of the number of constructions, there were few cases of earthquake damage. In addition, the structure was constrained by the surrounding soil. Some scholars at home and abroad believe that the seismic capacity of underground structures is relatively good. The degree of damage under load conditions is lighter than that of above-ground buildings, so the research on the seismic resistance of underground structures started relatively late, and the relevant seismic calculations and seismic and shock-absorbing measures have not been applied to underground structures that have been in operation or are under construction

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