摘要
从弹性波理论出发,研究了各向异性介质中地震波的速度特征、波型和测试方法等影响因素,探讨了目前规范中场地分类存在的若干问题以及场地卓越周期的计算问题.考虑卓越周期对地震动特性以及结构抗震设计的影响,提出了利用场地卓越周期及考虑各向异性主轴进行场地分类和各向异性场地卓越周期确定的新方法.
<Abstrcat>Based on the theory of elastic wave in anisotropy medium, the characteristic of velocity of the seismic wave and the influence of the wave modes, the surveying method to the velocity are analyzed.The paper have researched the classification of the site and the calculation of the predominant period. Taking account of the effect of the predominant period to the ground response and the design of seismic structures, an improved scheme of considering predominant period and the principal axis of the anisotropy for seismic site classification is proposed.
出处
《中南林学院学报》
CSCD
北大核心
2005年第3期92-95,共4页
Journal of Central South Forestry University
基金
湖南科技计划项目资助项目(04sk3072)
中南林学院青年基金资助项目0203.
关键词
场地分类
各向异性
场地微动
各向异性主轴
卓越周期
seismic site classification
anisotropy
ground microtremor
anisotropy principal axis
predominant period
