Damage Based Design Approach for Structures Subjected to Earthquake and Other Dynamic Loads

遭受地震和其他动态载荷的结构的基于损伤的设计方法

• 批准号: 0346674
• 负责人: George Lee
• 金额: $ 3.96万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-11-01 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0346674&HistoricalAwards=false
• 关键词: Damage; Based; Design; Approach; Structures

PI: George Lee, SUNY BuffaloThis project is aimed to explore a new design concept on damage based design for highway bridges to resist earthquake ground motions and other dynamic loads. This is a jointly supported pilot study by NSF (Division of Civil and Mechanical Systems) and FHWA (Turner Fairbanks Highway Research Center) to develop new bridge design principles and criteria for future applications. In this pilot project, proof-of-concept study is carried out, both analytically and experimentally on a structural component by examining the damage initiation and accumulation process under selected input earthquake ground motions. The PI intends to show that seismic performance of bridges may not be satisfactorily described by using the quasi-static approach or based on behaviors under cyclic loading conditions. Many structural damages are results of combined failure modes (strength, deformation, stiffness, low cycle fatigue, etc.). They can only be understood based on principles of structural dynamics of M-DOF systems. Damage based performance criteria are important foundations for the Bridge of the Future.

主要研究者：乔治李，纽约州立大学布法罗分校本项目旨在探索一种新的设计概念，基于损伤的设计，公路桥梁，以抵御地震地面运动和其他动态载荷。 这是一项由NSF（土木和机械系统分部）和FHWA（特纳费尔班克斯公路研究中心）联合支持的试点研究，旨在为未来的应用开发新的桥梁设计原则和标准。 在这个试点项目中，概念验证的研究进行了分析和实验上的结构部件，通过检查选定的输入地震地面运动下的损伤启动和积累过程。 PI旨在表明，使用准静态方法或基于循环荷载条件下的行为可能无法令人满意地描述桥梁的抗震性能。 许多结构损伤是组合失效模式（强度、变形、刚度、低周疲劳等）的结果。 它们只能基于多自由度系统的结构动力学原理来理解。 基于损伤的性能标准是未来桥梁的重要基础。