| 考虑参数空间变异性多层土坡系统可靠度分析 |
| |
| 引用本文： | 蒋水华,李典庆.考虑参数空间变异性多层土坡系统可靠度分析[J].岩土力学,2015,36(Z1):629-633. |
| |
| 作者姓名： | 蒋水华 李典庆 |
| |
| 作者单位： | 1. 南昌大学 建筑工程学院，江西 南昌 330031；2. 武汉大学 水资源与水电工程科学国家重点实验室，湖北 武汉 430072 |
| |
| 基金项目： | 国家杰出青年科学基金（No.51225903）；国家重点基础研究发展计划973项目（No.2011CB013506）；国家自然科学基金（No.51329901） |
| |
| 摘 要： | 多层土坡在岩土工程实际中十分常见，不仅土体参数存在一定的空间变异性，而且土体框架呈现明显的层状分布特征，然而目前对考虑土体参数空间变异性的多层土坡稳定可靠度研究的远远不够。提出了基于多重响应面边坡系统可靠度分析的蒙特卡洛模拟（MCS）方法，给出了计算流程图，系统地研究了考虑土体参数空间变异性的多层土坡系统可靠度问题。结果表明，提出方法能够有效地分析考虑参数空间变异性低失效概率水平的多层土坡系统可靠度问题，并且具有较高的参数敏感性分析计算效率。
|
| 关 键 词： | 多层土坡 可靠度 空间变异性 多重响应面法 小失效概率 |
| 收稿时间： | 2015-03-10 |
Reliability analysis of multilayered soil slopes system considering spatial variability of soil properties |
| |
| JIANG Shui-hua,LI Dian-qing.Reliability analysis of multilayered soil slopes system considering spatial variability of soil properties[J].Rock and Soil Mechanics,2015,36(Z1):629-633. |
| |
| Authors: | JIANG Shui-hua LI Dian-qing |
| |
| Institution: | 1. School of Civil Engineering and Architecture, Nanchang University, Nanchang, Jiangxi 330031, China; 2. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China |
| |
| Abstract: | The multilayered soil slopes are very common in geotechnical practice. Not only there exists inherent spatial variation for soil properties, but also there shows obvious multilayered distribution characteristics within the natural soil profile. However, few attempts have been made to study the reliability of multilayered soil slope stability in spatially variable soils. This paper proposes a Monte-Carlo simulation (MCS) based slope system reliability analysis approach using multiple response surfaces. The flow chart for the proposed approach is presented. The reliability of a multilayered soil slope system considering spatial variability of soil properties is systematically investigated using the proposed approach. The results indicate that the proposed approach properly evaluates the slope system reliability at small probability levels (i.e., pf,s < 0.001) considering spatial variability of soil properties and achieves high computational efficiency in parametric sensitivity analysis. |
| |
| Keywords: | multilayered soil slope reliability spatial variability multiple response surfaces small failure probability |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
