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

A reinforced concrete and construction method technology, applied in the direction of formwork/formwork/work frame, building structure, and on-site preparation of building components, which can solve the problems of concrete slippage, difficulty in positioning and height control of vertical poles, and load-bearing of glass fiber reinforced plastic formwork The capacity can not meet the requirements and other problems, to achieve the effect of force balance, solve the oblique thrust, and save construction time

CN103590603BActive Publication Date: 2015-08-26THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-08-26

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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.
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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...

Examples

Embodiment Construction

[0043] The eggshell-shaped reinforced concrete structure involved in the embodiment of the present invention is the exterior decoration structure of the gate. Designed according to the reasonable service life of 50 years, the safety level of the building structure is Class II, and the seismic fortification intensity is 8 degrees, such as Figure 4 As shown, the elevation of the top of the eggshell-shaped reinforced concrete structure of the present invention is 4.45m, the span of the shell is 42m, which is relatively large, and the surface curvature of the structure varies widely and irregularly, which makes the design and construction of the formwork difficult. .

[0044] figure 1 It is the construction flowchart of the large-span multi-curvature thin-shell reinforced concrete structure construction method of the present invention, and the specific construction method is as follows:

[0045] 1 Draw construction drawings

[0046]Draw the 3D model diagram through the Rhino s...