《钢结构与钢-混凝土组合结构设计方法》的理解与应用——钢结构抗震性能化设计  

Understanding and application of design method for steel and steel-concrete combined structures: seismic performance-based design of steel structures

作　　者：周佳[1] 童根树[2] 李常虹 刘宜丰[1] 张磊[2] 付波 ZHOU Jia;TONG Genshu;LI Changhong;LIU Yifeng;ZHANG Lei;FU Bo(China Southwest Architectural Design&Research Institute Co.,Ltd.,Chengdu 610041,China;Institute of High-Performace Structures,Zhejiang University,Hangzhou 310058,China;Hangzhou TONGMSK Architectural Structure Design Office Co.,Ltd􀆰,Hangzhou 311215,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610041 [2]浙江大学高性能结构研究所,杭州310058 [3]杭州铁木辛柯建筑结构设计事务所有限公司,杭州311215

出　　处：《建筑结构》2022年第18期145-150,共6页Building Structure

基　　金：中国建筑西南设计研究院有限公司重点课题(R-2021-08-S-A-2023);浙江省建设科研项目(2021K091)。

摘　　要：结构抗震设计的目标是小震不坏、中震可修、大震不倒,中震下结构进入弹塑性阶段,弹塑性阶段结构的地震力如何求得,是亟需解决的问题。根据《钢结构与钢-混凝土组合结构设计方法》,详细介绍了精细化延性抗震设计理论,影响结构性能系数R取值的各种因素,结构延性系数与构件宽厚比的关系。介绍了采用《钢结构设计标准》(GB 50017-2017)进行抗震性能化设计的流程,及性能系数最小值的确定依据。最后对我国《钢结构设计标准》(GB 50017-2017)在抗震性能化设计流程、性能系数的取值、构件宽厚比限值等方面提出了建议。The goal of structural seismic design is not broken in small earthquakes, repairable in medium earthquakes, and not collapsing in large earthquakes. The structure enters the elasto-plastic stage under the medium earthquake, how to obtain the seismic force of the elasto-plastic stage structure is an urgent problem that needs to be solved. According to the design method for steel and steel-concrete combined structures, the refined theory for ductile ductility-based seismic design of structures, the various factors affecting the R-value of the structural coefficient of performance, and the relationship between structural ductility coefficient and member width-to-thickness ratio were introduced in detail. The seismic performance-based design process using the steel structure design standard(GB 50017-2017)and the basis for determining the minimum value of the performance coefficient were described. Finally, suggestions were made for China’s steel structure design standard(GB 50017-2017)in terms of seismic performance-based design process, value of performance coefficient, and limits of member width-thickness ratio.

关 键 词：钢结构 延性抗震设计 性能化设计 性能系数 二阶效应 宽厚比 

分 类 号：TU391[建筑科学—结构工程]