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Research of Seismic Reliability Analysis of Structural Systems

结构系统抗震可靠性分析研究

基本信息

批准号：
01550454
负责人：
ASANO Koichiro
金额：
$ 1.34万
依托单位：
Kansai University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

项目摘要

Quantification of seismic reliability or seismic safety of structural systems has become one of the important research subjects in connection with the damageability of structural systems. The objective of this research is modeling of random earthquake excitation with non-stationary spectral characteristics, analyzing seismic reliability of structural systems based on the probabilistic moment response and developing of concrete and effective approach to estimation of seismic structural reliability.The main research items for this objective were1. estimation of probabilistic earthquake response of structural systems with multi-degree-of-freedom having bi-linear or poly-linear hysteretic characteristics,2. calculation of sensitivity of this response to the predominant angular frequency and the shaping factor,3. selection and quantification of effective parameter to seismic safety of structural systems.Following the above research items, studies were carried out and their results were categorized into three parts entitled by (1) estimation of earthquake input characteristics and ground amplification characteristics, (2) analysis of seismic reliability of structural systems and (3) analysis of the optimum active control force of structural systems subjected to earthquake excitation.The results were confined to rather fundamental stage of the research as presented in the report paper.However, continuous efforts are unavoidable for the completion of the objective of this research from the broader sense of an earthquake engineering view point. We have made resolution to take a further step toward this research objective.

结构体系地震可靠度或地震安全度的定量化已成为结构体系损伤性研究的重要课题之一。本文的研究目标是建立具有非平稳谱特征的随机地震激励模型，基于概率矩响应分析结构体系的抗震可靠度，并提出具体有效的结构抗震可靠度评估方法。具有双线性或多线性滞回特性的多自由度结构体系的概率地震反应估计; 2.计算该响应对主导角频率和成形因子的灵敏度，3.对结构体系地震安全性有效参数的选取和量化，在上述研究项目的基础上，进行了研究，其结果分为三个部分：（1）地震输入特性和地面放大特性的估计，（2）结构体系抗震可靠度分析;（3）分析了地震作用下结构体系的最优主动控制力，其结果仅限于研究的初级阶段，然而，从地震工程学的观点来看，要完成这项研究的目标，必须不断努力。我们已经下定决心朝着这一研究目标更进一步。