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| 地震作用下土坡可靠度风险分析 | |
| 引用本文： | 贾超,刘宁,陈进. 地震作用下土坡可靠度风险分析[J]. 岩石力学与工程学报, 2005, 24(4): 703-707 |
| 作者姓名： | 贾超 刘宁 陈进 |
| 作者单位： | 1. 清华大学,水电系,北京,100084 2. 河海大学,土木学院,江苏,南京,210098 3. 长江科学院,湖北,武汉,430010 |
| 基金项目： | 教育部科学技术研究重点项目，水利部科技创新项目(scx2002–09) |
| 摘 要： | 将地震效应以水平地震加速度的形式引进到土坡的可靠度风险分析中,探求动力作用下土坡的动力安全系数与相应条件下的静力安全系数的关系,并以安全系数来表征土坡的可靠度。在地震加速度为随机的情况下,导出土坡在地震效应下的失效概率的数学表达形式。以南水北调中线工程中的一土坡设计断面为实例,计算结果表明,地震效应对土坡的安全影响是较为显著的,对土坡的分析研究不应忽略地震因素的影响。 |
| 关 键 词： | 岩土力学 水平地震加速度 土坡 动力安全系数 可靠度 南水北调 数值拟合 |
| 文章编号： | 1000-6915(2005)04-0703-05 |
| 收稿时间： | 2003-08-01 |
| 修稿时间： | 2003-09-22 |
SLOPE RISK ANALYSIS UNDER THE EARTHQUAKE EFFECT |
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| JIA Chao,LIU Ning,CHEN Jin. SLOPE RISK ANALYSIS UNDER THE EARTHQUAKE EFFECT[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(4): 703-707 | |
| Authors: | JIA Chao LIU Ning CHEN Jin |
| Affiliation: | JIA Chao1,LIU Ning2,CHEN Jin3 |
| Abstract: | Horizontal earthquake acceleration is used for slope risk analysis,and the relationship between the dynamical safety factors and corresponding static safety factors is obtained. The reliability of slope is expressed with the safety factor. The mathematic formulation of the slope failure probability is deduced with stochastic earthquake acceleration. In the case of a slope in the south-north water transfer project(SNWTP),calculation results show that safety factor with the stochastic earthquake is 25% smaller than that without earthquake. It is clear that the influence of the earthquake is notable. |
| Keywords: | rock and soil mechanics horizontal earthquake acceleration slope dynamical safety factor reliability South-North water transfer project(SNWTP) numerical simulation |
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