RELIABILITY-BASED STRUCTURAL OPTIMIZATION OF SPATIAL GIRDER-PANEL SYSTEM CONSIDERING STABILITY

摘要：

The questions like how to model the three dimensions spatial girder-panel structural system, take reliability-based structural optimization, and ensure girder stability, have been studied in this paper. Considered the material intensity, girder section area, panel thickness and loads as stochastic variables, mathematic model of optimization was constructed. Project variables were established focus on having enough stability, in the iterative procedure, the optimum vector method was adopted to optimize the object, the gradient step and the optimum vector step have been used alternatively, and these can make the iterative procedure more quickly. The calculation of the numeral example shows this method is exact and free from the selection of searching start point, further more the convergence is stable and quickly.

作者: YAN Xinchi

作者单位: College of Civil Engineering, Southern Yangtze University, Wuxi 214122, China

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）