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对聊城盛世天湖环保科技园温泉馆室外附属馆结构方案设计阶段的关键问题进行了论述。当下部结构平面不规则且超长时,不应按分缝设计,若分缝会造成上部钢结构屋盖的支座支承在动力特性不同的多个下部结构上。按照抗震规范要求,并结合MIDAS/Gen特有的应变能阻尼比计算方法,实现了组合结构阻尼比的正确计算,进而保证了地震作用计算的合理可靠性。针对支托屋盖管桁架的钢柱,利用结构稳定理论给出了稳定方程和简化计算公式。
Discusses the key issues in the design stage of the structure design of the outdoor annex of Hot Spring Pavilion in Tian Lake Environmental Science and Technology Park in Liaocheng. When the lower part of the structure is irregular and long, it should not be designed according to the slits. If the slits cause the support of the roof of the upper steel structure to be supported on a plurality of lower structures with different dynamic characteristics. According to the requirements of seismic code and MIDAS / Gen specific strain energy damping ratio calculation method, the correct calculation of the damping ratio of the composite structure is realized, which ensures the reasonable reliability of the seismic action calculation. For the steel columns supporting the roof truss, the stability equation and the simplified calculation formula are given by means of the structural stability theory.