【摘要】 针对某大底盘双塔超限高层结构,采用基于性能的设计方法进行抗震设计。通过在小震、中震、大震作用下的弹性和弹塑性分析,了解该结构的动力特性和破坏特征。计算结果显示因双塔对称布置,受力较为合理,具有较强的抗震性能,满足延性设计的要求,达到了小震不坏、中震可修、大震不倒的抗震设防目标。更多还原

【Abstract】 The seismic design of a large-base-slab and twin-tower tall building beyond the code was presented using the performance-based design method.The dynamic characteristics and failure characteristics of the structure were studied by elastic computation and dynamic elastic-plastic time history analysis under different level earthquakes.The results show that the structure has an advantage of reasonable stress as the twin towers are symmetrically arranged,thus the seismic performance of the structure is good,and the requirement of ductility design of structure is satisfied.It can fulfill the seismic fortification criterion "no damage under minor earthquake,repairable under moderate earthquake,no collapse under rare earthquake".更多还原