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采用基于显式积分的弹塑性动力分析方法,对东北传媒文化广场主楼进行了罕遇地震弹塑性时程分析,以了解在罕遇地震下的结构弹塑性行为,同时研究罕遇地震作用下主要构件的损伤和屈服情况,并对损伤程度做出性能评价,以指导结构施工图设计。结果表明,本工程采用的筒中筒结构形式具有较高的抗震承载力和延性,能够满足“大震不倒”的建筑抗震设防目标。
Based on the explicit integral method of elasto-plastic dynamic analysis, the elasto-plastic time-history analysis of rare earthquakes in the main building of the media plaza in Northeast China was carried out to understand the structural elastoplastic behavior under rare earthquakes. Component damage and yield conditions, and to make a performance evaluation of the degree of damage to guide the construction design of the structure. The results show that the structure of the tube used in the project has high seismic capacity and ductility, which can meet the seismic fortification goal of buildings without “big earthquake”.