Construction method of large-span multi-curvature thin-shell reinforced concrete structures

Abstract

A large-span multi-curvature thin shell reinforced concrete structure construction method specifically includes the steps of making drawings, manufacturing and building glass fiber reinforced plastics, cleaning a construction site, carrying out paying-off positioning according to an established curvature and contour line data, setting up supporting frames, setting up thin shell structured supporting frames, manufacturing thin shell structured formworks, binding shell reinforcing steel bars, pouring concrete, dismounting formwork supporting frames and the like. According to the construction method, a contour line mode is adopted to carry out disassembling on the formworks by being coordinated with a control line, so rapid erection is achieved and the construction time is saved. The portion, close to the bottom of a shell is made of dual-side glass fiber reinforced plastic formworks, and formwork sealing is carried out by using steel wire gauze arranged at intervals, so vertical bearing capacity is guaranteed, the problem in large-gradient concrete construction is solved, and the slanting thrust of the structure on frame bodies is removed effectively. In addition, concrete subsection symmetrical pouring is adopted, so the stress of a supporting system can be balanced, and the problem of difficult construction caused by big shell size and steep gradient can be solved.

Description

technical field [0001] The invention relates to a reinforced concrete construction method of a large-span multi-curvature thin shell structure, in particular to a construction method of an eggshell-shaped reinforced concrete structure. Background technique [0002] With the strengthening of my country's economic strength, people have put forward higher and higher requirements for the shape and space of buildings. The continuous development of architectural structure theory and the accumulation of large-scale engineering practice have led to the development of concrete structure forms from regular planes and straight spaces to special-shaped spaces, beautiful shapes, and high headroom. For space-shaped structures, choosing a reasonable and safe formwork support design method and advanced construction technology is the key to ensuring the quality and effect of the structure. Large-span, multi-curvature, and complex spatial structures are beautiful and majestic, and are increa...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for a large-span multi-curvature thin-shell reinforced concrete structure, which solves the difficult problems in the construction of a large-span multi-curvature thin-shell reinforced concrete structure in the prior art, such as the problem of determining the specification of glass fiber reinforced plastics, due to the large curvature changes In the process of erecting the support frame, the position positioning and height control of the vertical pole are facing difficulties. Due to the large span, the load-bearing capacity of the general FRP formwork cannot meet the requirements, and the concrete is prone to slide when pouring the concrete due to the large curvature of the shell edge. question etc.

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