摘要
天津于家堡金融区四幢超高层建筑,分别采取了支撑框架-核心筒、钢筋混凝土筒中筒、带有加强层的框架-核心筒以及方钢管密柱钢框架-钢筋混凝土核心筒的结构体系,均为超限结构。在结构设计中应用了基于性能的抗震设计思想,在满足规范要求的基础上,分别采取了不同的性能指标,从计算和构造两个方面保证结构抗侧力构件在中震和大震作用下达到预期性能,提高了结构设计的安全性与合理性。
Four tall buildings are designed in Yujiapu finance district,Tianjin,whose structural systems are braced frame-core wall structure,reinforced concrete tube-in-tube structure,frame-core wall with strengthened story structure,steel frame-core wall structure respectively.For these over-limit structures,performance-based seismic design theory was applied during the structural design.Different performance criteria were adopted in different structures,the structural anticipated seismic performance under moderate earthquake and rarely earthquake could be guaranteed via structural calculation and conformation measures.The structural safety and rationality were improved after performance-based seismic design theory is applied.
出处
《结构工程师》
2011年第2期15-22,共8页
Structural Engineers
关键词
高层建筑
基于性能抗震设计
性能指标
tall building
performance-based seismic design
performance criterion
