Response Spectrum Approach for Nonlinear Hysteretic Structures

非线性滞回结构的响应谱方法

• 批准号: 8412830
• 负责人: Mahendra Singh
• 金额: $ 13.54万
• 依托单位: Virginia Polytechnic Institute and State University
• 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: 1985-01-01 至 1987-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8412830&HistoricalAwards=false
• 关键词: Response; Spectrum; Approach; Nonlinear; Hysteretic

This project deals with the problems of nonlinear hysteretic structures subjected to random earthquake excitations. The objective is to develop a modal response spectrum procedure for the calculation of structural responses such as member forces, deformation, and maximum ductility. Two approaches employing stochastic linearization are used to analyze structures exhibiting hysteretic force-deformation behavior. The approaches developed are iterative, employ the modal analysis method of structual dynamics, and are able to provide response quantities such as member forces, member ductility requirements, acceleration response and floor response spectra. As a final product, the research provides an analytical approach which should be of direct help to structural engineers in their design evaluations of structures for the earthquake design loads.

该项目研究随机地震激励下的非线性滞回结构问题。 目标是开发模态响应谱程序，用于计算结构响应，例如构件力、变形和最大延展性。 两种采用随机线性化的方法用于分析表现出滞后力变形行为的结构。 所开发的方法是迭代的，采用结构动力学的模态分析方法，并且能够提供诸如杆件力、杆件延性要求、加速度响应和地板响应谱等响应量。 作为最终产品，该研究提供了一种分析方法，可以直接帮助结构工程师对地震设计荷载的结构进行设计评估。