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重庆西永综保区监管大楼办公主楼为大跨度连体结构,连接体跨度为58.6m,连接体底部与顶部均采用钢结构桁架与两侧的筒体相连形成巨型框架。通过对比分析确定了钢桁架的结构方案,按抗震性能化设计的概念进行结构设计;采用SAP2000软件进行了弹塑性时程分析,分析了连接体桁架及筒体的受力性能;并通过振动台试验和节点试验验证了结构及节点连接的可靠性,并在计算分析及试验结果的基础上采取了相应的抗震加强措施。
The main office building of the supervision building in Xiyong Comprehensive Protection Area in Chongqing is a large-span one-piece structure with a span of 58.6m. The bottom and the top of the connecting structure are both connected by a steel truss with a cylinder on both sides to form a giant frame. Through the comparative analysis, the structural scheme of the steel truss was determined and the structural design was carried out according to the concept of seismic performance-based design. The elasto-plastic time-history analysis was carried out by SAP2000 software and the mechanical properties of the truss and the tubular body were analyzed. The test and the node test verify the reliability of the structure and the connection of the nodes. Based on the calculation and analysis and the test results, the corresponding seismic strengthening measures are taken.