| 地震动力作用下有限元土石坝边坡稳定性分析 |
| |
| 引用本文： | 唐洪祥,邵龙潭.地震动力作用下有限元土石坝边坡稳定性分析[J].岩石力学与工程学报,2004,23(8):1318-1324. |
| |
| 作者姓名： | 唐洪祥 邵龙潭 |
| |
| 作者单位： | 1. 大连理工大学海岸与近海工程国家重点实验室,大连,116023
2. 大连理工大学工程力学系,大连,116023 |
| |
| 摘 要： | 基于地震动力时程反应和随机地震反应，用有限元边坡稳定性分析方法，分析了正弦波作用下模型坝边坡的稳定性，以此作为该方法的数值验证；而后，通过对地震动力作用下土石坝边坡稳定性的分析，对地震动力作用下影响坝体边坡最危险滑裂面位置及稳定性的动力影响因素进行了有益的探讨，并指出，地震动力作用下土石坝边坡与正弦波作用下模型坝边坡的最危险滑动面位置有所不同。
|
| 关 键 词： | 土石坝 边坡工程 稳定性 地震动力 正弦波 随机地震反应 |
| 文章编号： | 1000-6915(2004)08-1318-07 |
| 收稿时间： | 2002-6-11 |
| 修稿时间： | 2002-8-23 |
FINITE ELEMENT ANALYSIS ON SLOPE STABILITY OF EARTH-ROCK DAM UNDER EARTHQUAKE |
| |
| Tang Hongxiang,Shao Longtan.FINITE ELEMENT ANALYSIS ON SLOPE STABILITY OF EARTH-ROCK DAM UNDER EARTHQUAKE[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(8):1318-1324. |
| |
| Authors: | Tang Hongxiang Shao Longtan |
| |
| Affiliation: | Tang Hongxiang1,Shao Longtan2 |
| |
| Abstract: | The problem of slope stability under earthquake is not yet solved because of complexity and nonlinear properties of soil and rock. The earthquake ground motion is of the stochastic nature,and the failure of earth rock dam under earthquake greatly depends on the details of ground motion. Based on definite stochastic seismic response and time-history seismic response analysis,the slope stability of earth-rock dam is studied by finite element method combining with Hook-Jevees searching method. First,based on time-history response analysis of a sand dam model excited by sine wave,the time-history of the limit sliding surface and the minimum safety coefficient of slope are obtained. Then,with input of equivalent power spectrum of the sine wave,the dam model is analyzed with the definite stochastic seismic response method,and the properties of slope stability and the location of sliding surface are determined. The results of the two analyses agree well with those of the dam model test. It can be concluded that the location and the stability of sliding surface are effected by the factors,such as the maximum value of acceleration,the predominant periods and the types of earthquake records. It should be noted that,the location of limit sliding surface of the dam model excited by sine wave is different from that of earth-rock dam under earthquake. |
| |
| Keywords: | slope engineering finite element analysis on slope stability time-history seismic response definite stochastic seismic response earth-rock dam |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩石力学与工程学报》浏览原始摘要信息 |
|
点击此处可从《岩石力学与工程学报》下载全文 |
