摘要
为了明确多层和高层错列桁架钢结构体系抗侧力性能的异同,建立了总高7、13、19层的3种结构模型进行三维整体计算,分析了不同的结构布置、抗侧力构件和桁架形式的选取对结构内力、水平位移、自振周期及振型的影响。分析结果表明,高层结构的侧移比多层结构更难控制,高层结构需比多层结构使用更大刚度的抗侧力构件。建议:高层错列桁架结构采用混合桁架形式,其受力和抗震效果好于采用帕氏桁架形式;高层错列桁架结构宜在纵向设置剪力墙,宜在横向设置偏心支撑。
Analytical models of 7-, 13-, and 19-story building were used to analyze the lateral force resistance of multi-story and high-rise staggered truss systems. The studies analyzed the influence of structural layout, lateral force resisting members and truss forms on the internal forces, transverse displacements, vibration modes, and vibration periods. The analyses indicate that displacement control is more difficult in high-rise structure than in multi-story buildings. The results show that the mechanical and seismic performances of the staggered truss system with mixed truss forms are better than that of systems with Pratt trusses. Shear walls should be used along the longitudinal direction, with eccentric braces along the transverse direction.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第12期2100-2104,共5页
Journal of Tsinghua University(Science and Technology)
基金
浙江省科技攻关计划资助项目(2005C31066)
嘉兴市科技计划资助项目(20041113)
关键词
结构体系
错列桁架
结构侧移
抗侧力
纵向刚度
偏心支撑
structural system
staggered truss
lateral structural displacement
lateral force resistance
longitudinal stiffness
eccentric brace
