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| 地震作用下边坡动力系数有限元分析 | |
| 引用本文： | 许年春,石维力,石东虹.地震作用下边坡动力系数有限元分析[J].地下空间与工程学报,2008,4(6). |
| 作者姓名： | 许年春 石维力 石东虹 |
| 作者单位： | 1. 重庆科技学院建筑工程学院,重庆,401331 2. 浙江省水利水电勘测设计院,浙江,310002 3. 重庆市勘测院,重庆,400020 |
| 摘 要： | 地震对边坡稳定性有重要影响,地震波在坡体内会产生动力放大效应,动力系数受边坡形态的影响.采用有限元方法作边坡动力分析时,根据边坡固有频率和坡体阻尼比确定出阻尼矩阵,选取合理的计算域宽度,边界采用人工一致边界,地震加速度输到基底.动力分析结果表明,坡度越大,边坡动力系数越大,动力系数沿坡高方向是变化的,坡脚处最小,坡顶处最大,以滑裂面以上楔体重心处的动力系数作为地震作用下边坡的动力系数值较合理,对于工程上较陡的边坡来说,动力系数在1.6-1.8之间. |
| 关 键 词： | 地震 动力系数 一致边界 有限元分析 |
Finite Element Analysis on Dynamic Coefficient for Slopes Subjected to Earthquake Load |
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| XU Nian-chun,SHI Wei-li,SHI Dong-hong.Finite Element Analysis on Dynamic Coefficient for Slopes Subjected to Earthquake Load[J].Chinese Journal of Underground Space and Engineering,2008,4(6). | |
| Authors: | XU Nian-chun SHI Wei-li SHI Dong-hong |
| Affiliation: | XU Nian-chun1,SHI Wei-li2,SHI Dong-hong3(1.Chongqing University of Science & Technology,Chongqing 401331,China,2.Zhejiang Design Institute of Water Conservancy , Hydroelectric Power,Zhejiang 310002,3.Chongqing Survey Institute,Chongqing 400020,China) |
| Abstract: | Earthquake has great effect on the stability of slopes,the seismic wave will be amplified in the slope and the dynamic coefficient particularly susceptible to the slope shape.In this paper,FEM is used to carry out dynamic analysis for slopes,the damping matrix is got based on the natural frequency and damping ratio of the material,generalized consistent boundary condition is set and the EI-centro earthquake records was input to the base boundary as seismic acceleration.The result of the dynamic analysis sho... |
| Keywords: | earthquake dynamic coefficient consistent boundary FEA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
