Single side steel plate concrete hollow combined roof construction method

Abstract

A single side steel plate concrete hollow combined roof construction method belongs to the field of modular construction of large-span large-space roofs and floor systems of nuclear power plants. The construction method includes: manufacturing a steel skeleton module and a support module, and hoisting all the modules in a non-device hoisting opening; constructing a temporary maintenance structure in a device hoisting opening; manufacturing roof reinforced concrete in the non-device hoisting opening on site; constructing a single side steel plate concrete hollow combined roof in the device hoisting opening; and temporarily drilling holes in the roof in service. The method can meet an assumed structure stress state during designing of the single side steel plate concrete hollow combined roof, i.e., the roof is hinged to a side wall during construction so as to seal the plant; in normal use, the roof is connected to a fixing end of a wall, and plays a role in whole structure seismic resistance of the plant; and the construction method can avoid cross-operation between device installation and roof civil construction, can lower the safety risk of high-altitude construction, and can effectively shorten the total construction period.

Description

technical field [0001] The invention belongs to the field of modular construction of a large-span and large-space roof and floor system of a nuclear power plant, and in particular relates to a construction method of a single-side steel plate concrete hollow composite roof. Background technique [0002] High-temperature gas-cooled reactor nuclear power plant (referred to as HTR-PM) is an advanced nuclear energy technology with independent intellectual property rights and fourth-generation technical characteristics in my country. It has inherent safety characteristics and is a supplement to my country's mainstream nuclear power generation technology. It provides the technology with the highest heat source temperature, so it has attracted extensive attention from the international nuclear energy community. [0003] The reactor building of a nuclear power plant is composed of two containment compartments. A set of containment shells are placed in each containment shell compartmen...

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Problems solved by technology

[0009] The purpose of the present invention is to propose a construction method of a single-side steel plate concrete hollow composite roof in order to meet the functional requirements of the above-mentioned high-temperature gas-cooled reactor building roof system. The construction method of the present invention not only solves the problem that traditional construction methods cannot meet The problem of the functional requirements of the reactor building reduces the safety risk of high-altitude construction, and more importantly, it greatly shortens the critical path construction period

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