【摘要】 通过对南通熔盛大厦办公楼进行罕遇地震下的弹塑性分析,验证结构是否满足大震下的抗震性能目标,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、弹塑性时程分析三部分。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。更多还原

【Abstract】 By nonlinear time-history analysis,it was determined whether the office building of Rongsheng Dasha in Nantong can fulfill the performance target when suffered major earthquakes.The potential weak parts were also found out,and the corresponding strengthen methods were used in design process.In addition,the seismic resisting mechanics of the whole structure was evaluated,the damage of main structural element was studied,and the degrees of damage were evaluated.The whole analysis procedure included the construction simulation analysis,computation of vibration mode,and the nonlinear time-history analysis.The results indicate that this building can fulfill the performance target when suffered major earthquakes represented by selected acceleration time histories.更多还原