中国-东盟国际商贸物流中心超高层结构静力弹塑性分析

A static elastic-plastic analysis on China-ASEAN international trade logistics center

为了研究钢框架—钢筋混凝土核心筒结构体系的抗震性能,基于FEMA-356建议的模型,采用MI-DAS/Gen有限元分析软件对中国—东盟国际商贸物流中心A座进行静力弹塑性分析,研究该结构体系整体抗震性能。结果表明:结构构件进入弹塑性的层次分明,核心筒为强墙弱梁的屈服机制,核心筒屈服后在外框架的协同作用下,整体结构仍能够继续承受较大的地震荷载,结构破坏模式合理,具备多道抗震防线及良好的抗震性能。研究结果可为结构工程设计提供良好的参考。

In order to study the seismic performance of steel frame-RC core wall structure system, a static elastoplastic analysis on the China-ASEAN international trade logistics center was carried out with the finite element program MIDAS/Gen and the recommendation model suggested by FEMA- 356. The results show that the structural members gradually enter the elastic-plastic stage; that core tube obeys the strong-wall-weak-beam principle. After core wall yielding, the entire structure can still withstand heavy earthquake due to the synergistic effect of the outside frame. Therefore, the failure mode of the structure was reasonable, and the structure has good seismic performance. The analysis results are instructive for the design of engineering structures.