罗赤宇，  焦  柯，  吴桂广，  赵云龙
    (广东省建筑设计研究院，广州510010)

[摘要] 选用3条短周期波和2条长周期波对佛山保利商务中心超高层结构进行时程分析。依据抗震设计规范判断这5条地震波均不符合要求，基于规范反应谱对5条波进行了修正。大震加速度时程计算表明，短周期波应进行修正，否则地震响应偏小，而长周期波不宜根据规范要求进行地震波修正，长周期波比短周期波对结构的破坏程度大，造成结构损伤严重，比如连梁和剪力墙底部加强区的损伤远大于短周期波，连梁若过早破坏，将导致结构扭转加大，进一步加重剪力墙的破坏。建议对超高层结构，采用3条以上符合场地特征的天然波计算，取其结果的包络值进行抗震性能设计。
[关键词] 长周期地震波；超高层结构；弹塑性时程分析
中图分类号：TU973 +.2    文献标识码：A  文章编号：1002-848X( 2012) S2-0038-06

Elastic-plastic time history analysis contrast under the long-period waves and short-period waves of asuper high-rise building structure
Luo Chiyu, Jiao Ke, Wu Guiguang, Zhao Yunlong
 ( The Arclutectural Design and Research Institute of Guangdong Province,  Guangzhou 510010,  China)

Abstract: Two long-period seisnuc waves and three short-period seismic waves are chosen to analyze the super high-rise structure of Poly Business Center in Foshan. The five waves that do not meet the code of seismic design of buildings are fixed according to the code response spectrum. The time history results show that short-period waves should be modified, or the earthquake response will be smaller, but long-period waves should not be modified; the latter is much larger than the former on the degree of damage, such as coupling beams and shear wall strengthened area. Coupling beams premature failure will lead to the structure torsion increase, fruther aggravating the destruction of the shear wall. The author suggest on super high-rise building structure, calculating three or above natural waves conforming to the site classification and taking the results of envelope value to seisnuc design.
Keywords: long-period seismic waves; super high-rise structure; elastic-plastic time lustory analysis