中国国际丝路中心大厦结构分析与设计

StructuralAnalysis and Design of China International Silk Road Centre Building

本工程位于高烈度地区,通过研究超高层建筑结构受力和变形的特点,结构设计采用消能减震设计方案,在核心筒和外框柱之间采用传统伸臂桁架和阻尼伸臂桁架相结合的形式。小震弹性分析、中震等效弹性分析及大震弹塑性分析结果表明该结构体系受力合理,阻尼伸臂桁架提供的附加阻尼可有效控制结构地震反应,特别是大震下的弹塑性变形,保护关键构件,提高整体结构抗震性能。

This project locates in the area of high seismic intensity.Based on the study of structural force and deformation of super high-rise building,energy dissipation design scheme is adopted.Combination of conventional outriggers and damped outriggers are applied between the core and the perimeter columns.Results of elastic analysis under frequent earthquake,equivalent elastic analysis under moderate earthquake and elastic-plastic analysis under rare earthquake show that the structural system is reasonable.The additional damping provided by the damped outrigger can effectively control the seismic response of the structure,especially the elastic-plastic deformation under rare earthquake,which can protect the key components and improve the seismic performance of the whole structure.