华中·中交城大悬挑钢桁架及大跨度连廊结构分析

Structural analysis on large cantilever steel truss and large⁃span corridor of Huazhong Zhongjiaocheng

以华中·中交城项目为研究基础,运用MIDAS Gen有限元分析软件对大悬挑钢桁架进行竖向地震作用、楼板应力及振动分析,计算结果表明桁架满足承载力要求以及正常使用下的性能要求,并提出了保证钢桁架结构安全可靠的措施;通过SAP2000、3D3S等有限元分析软件,对大跨度连廊结构在小遇、中震及大震作用下进行了分析,计算结果表明在连廊端部设置铅芯橡胶支座可满足连廊正常使用下的性能要求和抗震设防要求。

Based on the research of the Huazhong Zhongjiaocheng project,the vertical seismic action,floor stress and vibration analysis of the large cantilever steel truss were carried out by using the MIDAS Gen finite element analysis software,and the calculation results showed that the truss meet the requirements of bearing capacity and performance under normal use,and the measures to ensure the safety and reliability of the steel truss structure were proposed.Through the finite element analysis software such as SAP2000 and 3D3S,the large-span corridor structure was analyzed under the action of small,medium and large earthquakes,and the calculation results show that the lead-core rubber bearing at the end of the corridor can meet the performance requirements and seismic fortification requirements under normal use of the corridor.