Roof with approximately quadrate plane and super large space pre-stressed steel grid structure and manufacturing method thereof

Abstract

The invention discloses a roof with an approximately quadrate plane and a super large space pre-stressed steel grid structure and a manufacturing method thereof. When the roof with the approximately quadrate plane of which the ratio of long side L1 to short side L2 is more than or equal to 1 and less than 1.5, L1 is more than or equal to 120 meters and less than or equal to 165 meters and L2 is more than or equal to 90 meters and less than or equal to 150 meters is manufactured, a fusiform space tube truss consisting of a top boom, a lower boom and a diagonal web member is orthogonally connected with another fusiform space tube truss at the same space height position so as to form a grid structure consisting of the fusiform space tube truss; four fusiform space tube trusses constituting the grid structure are manufactured into support stay bar type cable-stayed self-balancing orthogonal space tube trusses; and the central structural heights of all fusiform space tube trusses and the four fusiform support stay bar type cable-stayed self-balancing orthogonal space tube trusses are controlled to be between L2 / 18 and L2 / 16. The roof has the advantages of small occupied space height, small using amount of steel, reliable structural performance, easy manufacturing and construction, low cost and the like.

Description

Technical field [0001] The invention relates to a prestressed steel grid structure roof with an approximately square plane super large space and a manufacturing method thereof, belonging to the technical field of prestressed steel structure roofs with no columns in the middle and covering an area of ​​more than 10800 square meters and less than 24750 square meters. Background technique [0002] With economic construction and social development, the steel structure roofs of large public buildings such as convention and exhibition centers and large-scale stadiums with more than 10,000 people are required to have larger and larger spans. The span of steel grid structure (grid and reticulated shell) regulations When the span is equal to 60 meters, it is a large span. When the span exceeds this limit and reaches a span of 90 to 150 meters, it is an ultra-large span. For buildings with a span of about 60 meters, the existing technology generally uses a shuttle-shaped space tube truss st...

AI Technical Summary

Problems solved by technology

Therefore, when used in super-long-span building structures, these two technical solutions still have the disadvantages similar to the general space tube truss structure

Especially when it is necessary to make the ratio of the long side L1 and the short side L2 of the roof plane to be 1≤L1 / L2<1.5, and 120 meters≤L1≤165 meters, 90 meters≤L2≤150 meters of such an approximate square plane 1. For the roof without pillars in the middle, due to the above-mentioned shortcomings in the existing technology, the existing technology can no longer meet the needs of use

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