Dynamic Elasto-plastic Analysis on the Steel Spatial Arch Truss with 30 m Span and 0.1 Rise-Span Ratio
In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 30 m 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 at the same time based on the plastic-hinge theory. Under the action of EL 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 horizontal direction is 517 gal, and is 387 gal when applied in vertical direction; The ratio of its maximal node horizontal displacement and its structural height is 1/96, and its displacement ductility coefficient is 2.636; The ratio of its maximal node vertical displacement and its structural soan is 1/589. and its displacement ductilitv coefficient is 1.08.
Earthquake action Elasto-plastic dynamic response Plastic hinge Steel arch truss
Haiwang Li Zhiwei Wang Jin Liu
Department of Civil Engineering, Taiyuan University of Technology 79, Yingzexi Street, Taiyuan, 030024, China
国际会议
上海
英文
1620-1623
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）