Large-span large-column distance quasi-ribbed floor type prestressed steel grid roof structure
A prestressed steel and long-span technology, applied to truss structures, girders, roofs, etc., can solve the problems of non-roof structure, high engineering cost, and large steel consumption, achieving significant economic benefits and reducing engineering costs , The effect of reducing steel consumption
Inactive Publication Date: 2008-10-01
GUIZHOU UNIV
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Problems solved by technology
[0002] In the construction of civil engineering projects, reinforced concrete ribbed floors and prestressed concrete ribbed floors are common floor structures in engineering, but when the plane size and column distance of the building are increased by 5 to 8 times, and the indoor When there is no column, it is unreliable to use reinforced concrete ribbed floor and prestressed concrete ribbed floor
At present, for such a roof with a large span (80m≤L≤150m) and a large column spacing (32m≤a≤60m), a flat steel grid structure is generally used, and it must be made into three layers, but the amount of steel used is relatively large. up to 100kg / m 2 Above, the project cost is high, not the best form of roof structure
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[0013] Embodiments of the present invention: as attached figure 1 As shown in the figure, it is composed of square pyramid flat grid truss 1 and prestressed space pipe truss 2. The prestressed space pipe truss 2 is installed on the support column 3 of the roof, and square pyramid flat grid Above the oblique web of the prestressed space tube truss 2. Among them, the prestressed space pipe truss 2 adopts the prestressed space pipe truss in the body, and its structure is as follows: it is equipped with a force transmission device 4 on the middle part of the lower chord of the pipe truss, and the prestressed steel cable 5 is located in the pipe truss and passes through the force transmission device 4. Both ends are fixed on the upper chord support node of the pipe truss, wherein the force transmission device 4 is composed of a steel box 6, a fixed pulley 7 installed in the steel box 6 and a tie rod 8 fixed at the bottom of the steel box 6. The prestressed space tube truss 2 menti...
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The invention relates to a pre-stress steel grid roof cover used in large span, large post rib floor cover, which comprises four-angle taper plate net support (1). Wherein, the support post (3) is mounted with pre-stress spatial tube truss support (2); four-angle plate net support (1) is connected to the truss support (2). The invention can be used in the large span steel grid roof cover whose span is between 80m to 150m and post distance is between 32m to 60m, with low steel consumption and low cost.
Description
Technical field: [0001] The invention relates to a roof, in particular to a large-span (80m≤L≤150m) large column spacing (32m≤a≤60m) quasi-ribbed floor type prestressed steel grid roof structure. Background technique: [0002] In the construction of civil engineering projects, reinforced concrete ribbed floors and prestressed concrete ribbed floors are common floor structures in engineering, but when the plane size and column distance of the building are increased by 5 to 8 times, and the indoor When there is no column, it is unreliable to use reinforced concrete ribbed floor and prestressed concrete ribbed floor. At present, for such a roof with a large span (80m≤L≤150m) and a large column spacing (32m≤a≤60m), a flat steel grid structure is generally used, and it must be made into three layers, but the amount of steel used is relatively large. up to 100kg / m 2 Above, the project cost is higher, and it is not the best roof structure form. Invention content: [0003] The ...
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IPC IPC(8): E04B7/00E04C3/10E04C3/08E04B1/342
Inventor 马克俭郑涛张华刚卢亚琴
Owner GUIZHOU UNIV