| 土层性质对入射平面SV波场地放大效应的影响研究 |
| |
| 引用本文： | 刘月红,刘涛.土层性质对入射平面SV波场地放大效应的影响研究[J].沈阳理工大学学报,2007,26(3):91-94. |
| |
| 作者姓名： | 刘月红 刘涛 |
| |
| 作者单位： | 天津大学,土木工程系,天津,300072 |
| |
| 摘 要： | 采用直接刚度法,在频域内求解了层状弹性半空间中入射平面SV波的场地放大效应问题.将控制点选在假想基岩露头,通过集整土层及半空间的动力刚度矩阵,形成整个场地的动力刚度矩阵,利用场地离散动力平衡方程求解土层顶面位移幅值与控制点位移幅值的比值,即放大系数.分析了SV波入射时,土层性质对刚度增长场地中含刚性土层场地和含软弱土层场地放大效应的影响.
|
| 关 键 词： | 刚度增长土层 SV波 土层性质 放大系数 |
| 文章编号： | 1003-1251（2007）03-0091-04 |
| 修稿时间： | 2006-11-21 |
Influence of Properties of Soil Layer on Site Amplification Effect for incident SV Waves |
| |
| LIU Yue-hong,LIU Tao.Influence of Properties of Soil Layer on Site Amplification Effect for incident SV Waves[J].Transactions of Shenyang Ligong University,2007,26(3):91-94. |
| |
| Authors: | LIU Yue-hong LIU Tao |
| |
| Affiliation: | Department of Civil Engineering, Tianjin University, Tianjin 300072, China |
| |
| Abstract: | Amplification of incident SV waves in a layered elastic half-space is analyzed by using direct stiffness method in frequency domain.The location of the control point is chosen at an assumed rock outcrop.The dynamic-stiffness matrix of the total system is calculated by assembling the matrices of individual elements.The ratio of the absolute values of the displacement amplitudes at the top of the layer and at outcropping of the bedrock is computed by solving the discretized dynamic equilibrium equation of the site.The influence of properties of soil layer on the amplification effect for the incident SV waves of a site with increasing stiffness,site with stiffness layer and site with soft layer is analyzed. |
| |
| Keywords: | increasing stiffness SV waves properties of layer amplification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
