摘要
为了评定兰州新区装配式钢结构的整体抗侧向倒塌能力,采用静力弹塑性分析方法对该结构进行推覆分析。首先,根据《建筑结构抗震规范》确定结构的目标位移,分别在结构侧向施加均布荷载和倒三角形荷载,逐级加载推覆,直至将结构推覆至目标位移,得到pushover曲线,该曲线反映了结构加载→屈服→倒塌的全过程;然后,在曲线上得到V u、V d、V e、Δmax、Δy的值,并根据这些值计算出结构的超强系数、延性系数、延性折减系数、反应修正系数和位移放大系数;最后,通过这些重要系数评定结构的抗侧向倒塌能力。
In order to evaluate the overall sideway collapse resistance of assembled steel structures in Lanzhou New Area,the static elastic-plastic analysis method was adopted to carry out pushover analysis.Firstly,the target displacement of the structure was determined according to the Code for Seismic Design of Buildings,with the uniform loading and inverted triangle loading respectively applied to the lateral side of the structure,and the pushover loaded step by step until the structure was pushed to the target displacement,with a pushover curve obtained,which reflected the whole process of loading,i.e.loading→yield→collapse of the structure.Then,the values of V u、V d、V e、Δmax、Δy were obtained on the curve,and according to these values,the over-strength coefficient,ductility coefficient,ductility reduction coefficient,response correction coefficient and displacement amplification coefficient of the structure were calculated.Finally,the anti-sideway collapse ability of the structure was evaluated through these important coefficients.
作者
李晓飞
薛晓峰
吴彦霖
LI Xiao-fei;XUE Xiao-feng;WU Yan-lin(Gansu Agricultural University,Lanzhou Gansu 730070,China)
出处
《林业机械与木工设备》
2021年第6期47-52,共6页
Forestry Machinery & Woodworking Equipment
基金
甘肃农业大学水利水电工程学院青年教师科技创新基金(SLSDXY-QN2019-07)
甘肃农业大学混合课程改革项目(GSAUBC2020B07)。
