Large-span concrete four-slope flat reticulated shell-simulating roof structure and manufacturing method thereof

Abstract

The invention discloses a large-span concrete four-slope flat reticulated shell-simulating roof structure and a manufacturing method thereof. The large-span concrete four-slope flat reticulated shell-simulating roof structure is formed in the mode that four multi-rib flat plates provided with grids in a uniform dividing mode are placed obliquely and converged at a ridge arch; the ridge arch and the multi-rib flat plates are supported on an edge truss; the edge truss is an open-web truss; and cornices and cornice sealing beams are arranged on the periphery of a roof. The manufacturing method ofthe large-span concrete four-slope flat reticulated shell-simulating roof structure comprises a cast-in-place mode or a prefabrication and assembly mode, specifically, in the cast-in-place mode, concrete pouring of all members is conducted through an all-round formwork, and in the prefabrication and assembly mode, the edge truss and the ridge arch are cast in place, multi-rib beams are prefabricated into crosses, the multi-rib beams and a prefabricated roof board are assembled on site, then concrete is poured in place partially, and thus manufacturing of the roof is completed. The large-spanconcrete four-slope flat reticulated shell-simulating roof structure can be used for public building roofs, the purpose of building the large-span roof with concrete materials is achieved, the sound concentration phenomenon of the shell structure can be relieved, construction difficulty is low, and the later maintenance cost of the roof is reduced.

Description

technical field [0001] The invention belongs to the technical field of building concrete structures, and in particular relates to a four-slope quasi-flat reticulated shell roof structure and a manufacturing method thereof for building buildings using reinforced concrete materials. Background technique [0002] Flat shell refers to the shell whose ratio of the height of the sag to the short side of the bottom is less than or equal to 1 / 5. It is a mature thin-walled space structure type and is usually used as a building roof structure. It has the advantages of small building space, beautiful shape, and good drainage. And other advantages, but there are disadvantages of poor acoustics and complex construction formwork. [0003] When a flat shell is cut from a spherical surface, it is called a spherical flat shell; when a curved generatrix is ​​used to move and form in space along two straight lines, it is called a hyperbolic flat shell. The calculation example done by Xiao Chi...

AI Technical Summary

Problems solved by technology

When the grid is divided parallel to the boundary, the shape of the prefabricated shell plate is not exactly the same, but because of the symmetry, the consumption of the formwork during the prefabrication of the shell plate can be reduced; when the grid is divided according to concentric circles, the seam after the shell plate is placed It is often consistent with the direction of the main internal force, which is not conducive to the force of the shell

Regardless of the mesh division method, in order to eliminate the stress concentration phenomenon of the shell, the shell plate needs to be made into a slightly curved flat plate, so the manufacturing difficulty of the shell plate prefabrication is relatively large

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