Dynamic Elasto-plastic Analysis on the Steel Spatial Arch Truss with 90 m Span and 0.1 Rise-Span Ratio
In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 90m span and 0.1 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. Under the action of EL-centro wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in X direction is 635gal, and is 465gal when applied in Z direction; The ratio of its maximal node horizontal displacement and its rise height is 1/486, and its displacement ductility coefficient is 1.029 and the ratio of its bars with plastic hinge appearing when buckling is 0.7％ when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/604, and its displacement ductility coefficient is 1.022 and the ratio of its bars with plastic hinge appearing when buckling is 2.8％ when EL-Centro waves applied in Z direction.
Earthquake action Elasto-plastic dynamic response Plastic hinge Steel arch truss
Hai-wang Li Xun Zhang Jing Liu
Department of Civil Engineering, Taiyuan University of Technology 79, Yingzexi Street, Taiyuan, 0300 Department of Civil Engineering, Taiyuan University of Technology 79, Yingzexi Street, Taiyuan, 0300
国际会议
上海
英文
1764-1767
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）