基于结构动力特性分析的高层建筑损伤机理与失效模式控制

项目名称： 基于结构动力特性分析的高层建筑损伤机理与失效模式控制

项目编号： No.51208356

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 姜南

作者单位： 天津大学

项目金额： 25万元

中文摘要： 针对目前结构整体损伤评估一般是以结构变形、位移、层间位移角、能量等作为损伤指标的现状，本项目以钢筋混凝土框架-核心筒结构为研究对象，提出求解弹塑性阶段结构动力特性的思路与方法；通过结构在不同弹塑性阶段结构动力特性的变化规律，研究其与结构内力、位移、变形的内在联系；研究不同类型主要、次要构件的损伤程度对结构动态动力特性影响的敏感性；通过与相关试验数据的对比分析，研究利用结构动态动力特性描述结构损伤的可靠性；基于结构动力特性对结构的损伤机理进行描述，研究其与结构损伤指标的内在联系；根据结构不同失效模式下的动力特性规律，对磁流变阻尼器半主动控制系统中的目标函数、控制策略、优化布置等进行设计和研究，并利用半主动控制系统对结构可能发生的不利失效模式进行控制。

中文关键词： 结构损伤；静力推覆方法；动力特性；损伤指标；损伤评估

英文摘要： Based on the structural deformation, displacement, story drift ratios, energy dissipation were always as the calculating parameters of damage index for global damage evaluation. This project takes the reinforced concrete frame tube structure as research object and will give some advices on how to obtain the dynamic characteristic of structure in elastic plastic stage. The variation laws of structural dynamic characteristics in different elastic plastic stage and the relationship between the dynamic characteristics and internal force, displacement, and deformation will be studied. The sensitivity of the structural dynamic characteristics influence by the damage of different types of primary and secondary component will be studied. By comparison with the experimental data, the reliability of describing damage using structural dynamic characteristics will be verified. Describe the damage mechanism based on structural dynamic characteristics and find the inner internal relationship with structural damage index. The variation laws of structural dynamic characteristics under different failure mode will be studied. Considering the structural dynamic characteristics, the objective function, control strategies and optimal placement in semi-active control system based on Magnetorheological Damper will be designed and rese

英文关键词： structure damage；Push-over method；dynamic characteristic；damage criterion；damage assessment