东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

结构随机延性需求谱的理论研究

期刊名称：工程力学,2006年5月,23(5):14-19
时间：0
分类：P315.9[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学]
作者机构：[1]湖南大学土木工程学院,长沙410082
相关基金：国家自然科学基金资助项目（50378034）教育部博士点专项基金资助项目（20030532020）
相关项目：钢筋混凝土框架结构损伤诊断与机理研究

关键词：工程抗震, 延性需求谱, 屈服水平系数, 条件分布, 延性系数, 弹塑性位移反应谱, earthquake resistant engineering, ductility demand spectrum, yield level factor, conditional distribution, ductility factor, inelastic displacement response spectrum

中文摘要：

引入结构屈服水平系数,建立了结构的延性需求谱,使地震动的幅值特性和频谱特性可以分开考虑.利用双线性单自由度体系的时程反应分析结果,对延性需求系数的条件分布类型进行了假设检验,通过回归得到了Ⅰ类和Ⅱ类场地上延性系数的条件均值和条件标准差的拟合公式.在此基础上,提出了延性系数的统计参数的计算方法,建立了随机的延性需求谱,进而可获得随机的弹塑性位移反应谱.

英文摘要：

By introducing the yielding level factor and constructing the ductility demand spectrum, the characteristic of peak values and frequency contents of ground motions are considered separately. Taking advantage of nonlinear time history analysis results of a single-degree-of-freedom system with the hysteretic model of bilinear, conditional distribution type of ductility demand factors are verified by goodness-of-fit tests. The formulations of the conditional mean and standard deviation of ductility demand factor for soil type Ⅰ and Ⅱ are obtained by nonlinear regression. Utilizing these formulations and the conditional probabilistic density function of ductility demand factor, the calculation method of the statistics of ductility factor is proposed, and the probabilistic ductility demand spectrum and displacement response spectrum are established.

同期刊论文项目