Analysis on Dynamic Failure Behaviors of Steel Double-Layer Latticed Cylindrical Shells with Three Circle Centers Used in a Gymnasium

Abstract

In this paper, the elasto-plastic dynamic analysis on dynamic failure behaviors of steel double-layer latticed cylindrical shells with three circle centers used in a gymnasium is carried out under EL-centro wave with SAP2000, and the appraisal results on their anti-failure performances are presented under strong earthquake action based on the plastic-hinge theory. In the analyses, the geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. The plastic development level of the rod, the deformed shape and the failure type and the ductility are estimated by plastic hinge principle. The results show that the failure model of the structure under the earthquake wave action is complicated. Firstly the middle of the lower chord destroyed due to lack of tensile strength, then the stiffness of the integral structure degenerated, and ultimately lost its bearing capacity. Therefore, this structure has a high bearing capacity and good ductility.