苏州中润广场主楼动力弹塑性时程分析

Elasto-plastic time history analysis of Suzhou Zhongrun Square main building

通过对苏州中润广场主楼弹塑性时程分析,验证结构是否满足"大震不倒"的设防水准要求,寻找结构薄弱部位和薄弱构件,提出相应的加强措施;同时,评价结构在大震作用下的力学性能,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,以指导结构设计。此分析过程分为施工过程计算、振型及周期计算、弹塑性时程分析。计算结果表明,在给定地震波的罕遇地震作用下,结构整体受力性能良好,能满足罕遇地震下的抗震性能目标。

By elasto-plastic time history analysis,it was determined whether the structure of Suzhou Zhongrun Square is satisfied with the standard to guarantee no collapse under major earthquake.The weakness parts or components of the structure were found out.Corresponding strengthened measures were put forward in design process.In addition,the performance mechanics suffering major earthquakes was evaluated.The damaged or yielded state of main structural components was studied,and the degree of damage was evaluated when submitted to rarely earthquakes.Some reasonable suggestions were obtained for engineering design.The compute considering work progress,the compute of vibration mode and period,and the elasto-plastic time history analysis were concluded in the analysis process.Calculation results indicate that the structure has excellent seismic behaviors when affected by specified major earthquake wave,and can reach the requirement of seismic performance under the action of the rarely earthquake.