Reliability and Risk-Based Design of Stuctures Under Multiple Hazards

多种危险下结构的可靠性和基于风险的设计

• 批准号: 8414284
• 负责人: Y. Wen
• 金额: $ 12.06万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-03-01 至 1987-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8414284&HistoricalAwards=false
• 关键词: Reliability; Risk; Based; Design; Stuctures

There is an increasing need for a methodology for safety and performance evaluation of critical structures in which loads combinations effects are important. In many cases, dynamic loads to which a structure is subjected are stochastic in time and space. Their individual and combined effects on the reliability of structures are not easy to assess. This project investigates the probabilistic methods for load combination analysis and design. The study will emphasize the application of the methodologies developed to design. The major research tasks include: development of methods for design based on structural optimization, development of computationally efficient first and higher order methods for nonlinear combination problems, and evaluation of current design methods and development of alternative design formula.

越来越需要一种方法来评估关键结构的安全性和性能，其中载荷组合效应是重要的。在许多情况下，结构所承受的动荷载在时间和空间上都是随机的。它们对结构可靠度的单独和综合影响不容易评估。本课题探讨了负荷组合分析与设计的概率方法。这项研究将强调将所开发的方法应用于设计。主要研究任务包括：发展基于结构优化的设计方法，发展计算效率高的非线性组合问题的一阶和高阶方法，以及评估现有设计方法和开发替代设计公式。