Super-large span peripheral simply-supported prestressed double-layer and three-layer combined torsional reticulated shell structure

A twisted reticulated shell and prestressed technology, which is applied in the direction of building structure and construction, can solve the problems of reducing steel consumption, increasing construction difficulty, increasing the number of rods, etc., to achieve reduced steel consumption, good structural integrity, The effect of reducing the amount of steel used

CN102235032AInactive Publication Date: 2011-11-09GUIZHOU UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a super-large span peripheral simply-supported prestressed double-layer and three-layer combined torsional reticulated shell structure, which comprises a torsional reticulated shell (1); framework columns (2) with unequal heights are arranged on the periphery of the torsional reticulated shell (1) according to the column reticulated distance requirement, and a central framework column (3) is arranged in the center of each side of the torsional reticulated shell (1); the overhung parts of the torsional reticulated shell (1) are simply supported at the tops of the framework columns (2); and a prestressed steel cable (4) is arranged on the central framework column (3) in the center of each side of the torsional reticulated shell (1). The combined torsional reticulated shell structure has good structural integrity, the lateral rigidity resistance of the structure is greatly improved, the hidden danger caused by the super-large overhung parts is eliminated, the steel for the structure is further optimized, the consumption of the steel is greatly reduced, and the requirements of 'energy conservation and synergism' are met; and the structure is particularly suitable for a super-large span torsional reticulated shell roof with span of 120 to 180 meters, and is a safe, reasonable, advanced and economic novel structural system.
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Description

technical field

[0001] The invention relates to a new type of steel twisted reticulated shell roof structure, in particular to a super large span (120m≦L≦180m) peripheral simply supported prestressed double-layer and three-layer combined twisted reticulated shell roof, which belongs to the technology of building steel structures field. Background technique

[0002] In the mid-1990s, several prestressed combined torsion reticulated shell structures appeared successively. For example, the Qingyuan City Gymnasium in Guangdong Province has a hexagonal plane and is supported by six double-layer torsion reticulated shells on the tops of six columns. Above, this is also the lowest point of the twisted reticulated shell, the span from column edge to column edge is 68.418m, the maximum overhang is 12.615m, the diagonal span of the hexagonal roof is 93.645m, and the entire roof forms a negative Gauss Curvature, that is, cutting along the edges of two adjacent columns, the reticulated...

Examples

Embodiment 1

[0024] Example 1. like figure 1 As shown, this embodiment is a super-large experimental hall. The plane size of the twisted mesh shell 1 is 150m × 150m, square, the column spacing of the column net is 7.5m on each side, and the length of each side is 20 × 7.5m=150m. Each side of the twisted mesh shell 1 is provided with 20 side frame columns 2 and 1 central frame column 3 with different heights, a total of 21 frame columns. The height of the central frame column 3 is the lowest, the height of the frame column 2 at the corner of the twisted reticulated shell 1 is the highest, and it is raised from the middle to both ends to form a 10° clip horn. The cantilevered parts of the twisted mesh shell 1 are simply supported on the top of the frame column 2 . The prestressed steel cables 4 are arranged on the top support nodes of the central frame columns 3 on each side of the twisted reticulated shell 1, which is also the lowest point of the entire twisted reticulated shell struc...