特殊桁框(STMF)结构特点及工程应用  

Characteristics and application of special truss moment frame(STMF)

作　　者：李澈[1] 张永丰 薛彦涛[1] Li Che;Zhang Yongfeng;Xue Yantao(China Academy of Building Research,Beijing 100013,China;China Construction First Group Construction & Development Co.LTD,Beijing 100000,China)

机构地区：[1]中国建筑科学研究院,北京100013 [2]中建一局集团建设发展有限公司,北京100000

出　　处：《建筑科学》2019年第1期124-129,共6页Building Science

基　　金：国家重点研发计划资助(2017YFC0703600

摘　　要：特殊桁框(STMF)是美国标准《钢结构建筑抗震设计规范》(ANSI/AISC 341-16)中提出的一种抗震框架结构体系,其采用铰接柱脚,并在桁架梁跨中设置特殊耗能段,通过特殊耗能段的屈服耗散地震能量,具有良好的抗震性能。本文首先介绍了特殊桁框(STMF)结构的特点及屈服机制,然后以采用特殊桁框(STMF)结构的北京某工程为例,详细说明特殊桁框(STMF)的设计过程并考察了其在大震作用下的耗能能力。Special Truss Moment Frame (STMF)is an aseismic frame structure proposed in American National Standard:Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341-16).The structure contains bottom hinged column,and truss beams with special energy dissipation segments.Seismic energy is dissipated by the yield of the special energy dissipation segments.The structure has good seismic performance.The characteristics and yield mechanism of special truss moment frame (STMF)structure are introduced,then taking an engineering project of STMF structure in Beijing as an example,the design process of special truss moment frame (STMF)is explained in detail and its energy dissipation capacity under the action of large earthquakes is investigated.

关 键 词：特殊桁框(STMF) 加固结构 耗能 屈服机制 

分 类 号：TU392[建筑科学—结构工程]