关于场地卓越周期和特征周期的若干讨论  

Discussions on Site Predominant Period and Characteristic Period

作　　者：陈鹏[1] 刘文锋[1] 付兴潘[1] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033

出　　处：《青岛理工大学学报》2009年第6期30-35,共6页Journal of Qingdao University of Technology

基　　金：山东省教育厅科技计划项目(J07YA09-2)

摘　　要：场地卓越周期和特征周期是反映场地动力特性的重要参数,两者均基于频谱分析理论.对卓越周期和特征周期的概念、研究意义及两者之间的关系进行了论述,分析对比了两者在计算原理、研究意义、工程应用及取值等方面的不同,界定了两者的概念.对目前较为常用的计算卓越周期和特征周期的方法,分别进行了分析比较,指出了卓越周期各计算方法的优缺点及适用条件,同时以144条地震波为例分析了特征周期各计算方法的特点及其差异,对场地动力特性的测定具有一定指导意义.Site predominant period and design characteristic period are the most two important parameters in reflecting the dynamic property of the site. Both are based on spectrum analysis theory. This paper introduces the concept and the significance of site predominant period and design characteristic period and analyses the main differences between the two parameters on the method of calculation and the numerical value in engineering design. Besides, three common methods which are usually used in the determination of site predominant period and design characteristic period are proposed, and the advantages and disadvantages of each method are analyzed, 144 ground records are employed to analyze characteristic and difference of calculation methods of design characteristic period. The results offer references in the determination of site predominant period.

关 键 词：卓越周期 特征周期 概念界定 计算方法 适用条件 

分 类 号：TU315.9[建筑科学—结构工程]