摘要
根据《钢结构与钢-混凝土组合结构设计方法》,详细介绍了人字支撑、交叉支撑以及框架-支撑结构在不同层间侧移角、不同支撑长细比下的抗侧力性能。介绍了我国《钢结构设计标准》(GB 50017—2017)关于受压支撑剩余承载力系数、竖向不平衡力折减系数的确定依据。阐述了框架-支撑结构中框架抗侧承载力不小于25%的原因。最后介绍了《钢结构设计标准》(GB 50017—2017)关于支撑系统中弱支撑强框架设计理念的实现方法,并对人字支撑系统中横梁的轴力计算公式提出了改进建议。
According to the design method for steel structures and steel-concrete combined structures,the lateral force resistance performance of chevron brace,cross brace and frame-braced structure under different story drift angel and different bracing slenderness were introduced in detail.The bases for determining the residual bearing capacity coefficient of compressive brace and the reduction coefficient of vertical unbalanced force using the standard for design of steel structures(GB 50017—2017)were introduced.The reasons why the frame lateral bearing capacity should not be less than 25%in the frame-braced structure were elaborated.Finally,the realization method of the standard for design of steel structures(GB 50017—2017)on the design conception of weak bracing and strong frame in the bracing system were introduced,and improvement suggestions were made for the calculation formula of crossbeam axial force in the chevron bracing system.
作者
周佳
童根树
李常虹
刘宜丰
张磊
潘宇
ZHOU Jia;TONG Genshu;LI Changhong;LIU Yifeng;ZHANG Lei;PAN Yu(China Southwest Architectural Design&Research Institute Co.,Ltd.,Chengdu 610041,China;Institute of High-Performace Structures,Zhejiang University,Hangzhou 310058,China)
出处
《建筑结构》
CSCD
北大核心
2022年第21期144-150,共7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)。
关键词
钢支撑
框架-支撑结构
二道防线
抗侧承载力
竖向不平衡力
steel brace
frame-braced structure
dual defense system
lateral bearing capacity
vertical unbalanced force
