土木与环境工程学报（中英文）2021，Vol.43Issue(1)：120-136,17.DOI:10.11835/j.issn.2096-6717.2020.016
加斜撑冷弯薄壁型钢组合墙体的抗震性能
Seismic performance of diagonally braced cold-formed thin-walled steel composite walls
摘要
Abstract
Through an experimental investigation of the seismic performance of diagonally braced cold-formed thin-walled steel composite walls subj ected to vertical loads,the mechanical properties,failure modes,and hysteresis properties of the walls were elucidated. In addition, the influence of a sheathing panel on the hysteresis performance,ductility,and energy dissipation of the composite walls was analyzed.The experimental results show that the shear bearing capacity of the single-sided oriented strand board (OSB)panel wall was increased by 38.79％compared with the non-panel wall under the same vertical load.The shear bearing capacity,ductility coefficient,μ, and energy dissipation factor,E,of the single-sided OSB panel composite wall with an axial compression ratio of 0.24 were increased by 7.5％,4.5％,and 4.1％,respectively,compared to the wall with an axial compression ratio of 0.16;however,the yield displacement was reduced by 8.1％.The cold-formed thin-walled steel composite wall with diagonal bracing exhibited good seismic performance.After verifying the reliability of the finite element model,the influence of the axial compression ratio of the wall stud and the yield strength of the steel components on the mechanical performance of the wall was investigated through a variable parameter analysis.The results showed that with the increasing axial compression ratio,the shear bearing capacity of the wall was improved.In addition,reducing the yield strength of the steel components significantly reduced the shear capacity of the composite wall.Finally,according to the Technical Specification for Low-rise Cold-formed Thin-walled Steel Buildings (JGJ 227-2011)and AISI S400-15,the resistance partial coefficient of the wall was derived,which determines the design value for the shear bearing capacity under a horizontal earthquake.关键词
冷弯薄壁型钢/组合墙体/斜向支撑/抗震性能/试验研究/有限元分析Key words
cold-formed thin-walled steel/composite wall/diagonal support/seismic performance/experimental research/finite element analysis分类
建筑与水利引用本文复制引用
徐云鹏,张海宾,夏祥,刘宇清,杨秀红,宫大壮..加斜撑冷弯薄壁型钢组合墙体的抗震性能[J].土木与环境工程学报（中英文）,2021,43(1):120-136,17.基金项目
National Key Research and Development Program of China (No.2016YFC0700905) （No.2016YFC0700905）
National Natural Science Foundation of China (No.51678060) （No.51678060）
