PERFORMANCE-BASED DESIGN OF STEEL TANKS UNDER SEISMIC RISKS

摘要：

The present study discusses about the seismic risk assessment of un-anchored steel tanks when a strong earthquake excitation develops a plastic deformation at the base plate due to a rocking motion of the tank. Current seismic design guidelines underestimate the seismic safety of buckling failure at the side wall or shell plate, because the stiffness degradation of the tank is overestimated with the structural characteristic factor Ds. The present study proposes an exact estimation approach of the seismic safety of buckling failure at the shell plate as well as the crack failure of the base plate.The seismic performance of the tank is also developed using a limit state design method to provide the fragility curves for the damage modes of the shell plate and base plates.

关键词： Steel tank seismic assessment elephant foot buckling structural characteristic factor performance-based design

作者: Takeshi Koike Toshio Imai Tomotaka Ogikubo

作者单位: Dept. of Civil Engineering, Musashi Institute of Technology, Tokyo. Japan Manager, Water Pipeline Dept, JFE Engineering Corp., Yokohama, Japan Dept of Civil Engineering, Musashi Institute of Technology, Tokyo, Japan

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）