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世界大学生运动会主体育场钢屋盖采用单层折面空间网格体系。采用一次性建模法跟踪模拟世界大学生运动会主体育场的施工过程。通过有限元分析考虑临时支撑柱、连系桁架以及看台支撑对结构的影响。对施工吊装进行了分析,总结了结构施工中的难点,并对铸钢节点进行了分析。研究表明:将应力监测点设置在临时支撑的较低位置而非主体结构上,可以有效地指导施工;临时支撑对结构影响显著;采用容许应力法确定吊绳截面尺寸,通过人为扶正的办法可以解决平面外位置偏离问题,而拼装结构的平面内稳定可以通过加设临时连杆实现。利用卡环将吊绳直接锁在构件上进行吊装;铸钢节点的最大应力未超过屈服应力,具有较高的安全储备。
The steel roof of the main stadium of the Universiade uses a single-layer folded-surface grid system. One-time modeling method is used to track the construction process of simulating the main stadium of the Universiade. Through the finite element analysis to consider the temporary support columns, truss connections and the impact of the stand on the structure. The lifting of the construction was analyzed, the difficulties in the construction of the structure were summarized, and the nodes of the cast steel were analyzed. The results show that: the stress monitoring point set in the temporary support of the lower position rather than the main structure, which can effectively guide the construction; temporary support has a significant impact on the structure; Adopt the allowable stress method to determine the sling section size, To solve the problem of out-of-plane position deviations, the in-plane stability of the assembled structure can be achieved by adding temporary links. Using the snap ring, the slings are directly locked on the components for lifting; the maximum stress of the steel nodes does not exceed the yield stress and has a high safety reserve.