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| 重力坝抗滑稳定可靠度分析：（二）强度指标和分项系数的合理取值研究 | |
| 引用本文： | 陈祖煜,徐佳成,陈立宏,王玉杰,孙平,吴超.重力坝抗滑稳定可靠度分析：（二）强度指标和分项系数的合理取值研究[J].水力发电学报,2012,31(3):160-167. |
| 作者姓名： | 陈祖煜 徐佳成 陈立宏 王玉杰 孙平 吴超 |
| 作者单位： | 1. 中国水利水电科学研究院岩土工程研究所,北京100048／流域水循环模拟与调控国家重点实验室,北京100038 2. 中国水利水电科学研究院岩土工程研究所,北京,100048 3. 北京交通大学土木建筑工程学院,北京,100044 |
| 基金项目： | 水利部公益性行业科研专项经费项目(200801005);国家自然科学青年基金(50909002) |
| 摘 要： | 岩土材料抗剪强度参数的合理选用是开展可靠度分析的重要一环。本文认为,在确定岩土参数变异系数的过程中,需要在现行规范建议值的基础上,综合考虑项目本身的试验成果和以往工程的经验选用设计指标。本文通过对1000多组试验结果统计及工程实例敏感性分析等途径对岩体抗剪强度参数变异系数做了比较和分析,并提出了初步的建议值。通过典型重力坝算例分析及工程实例的反演分析,对岩体的抗剪强度参数的分项系数进行了敏感性分析,对重力坝设计规范的建议值的合理性进行了评价。 |
| 关 键 词： | 水工结构 变异系数 分项系数 混凝土重力坝 相对安全率 抗剪强度指标 |
Reliability analysis on sliding stability of gravity dams: Part Ⅱ,determination of shear strength parameters and partial factors |
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| CHEN Zuyu,XU Jiacheng,CHEN Lihong,WANG Yujie,SUN Ping,WU Chao.Reliability analysis on sliding stability of gravity dams: Part Ⅱ,determination of shear strength parameters and partial factors[J].Journal of Hydroelectric Engineering,2012,31(3):160-167. | |
| Authors: | CHEN Zuyu XU Jiacheng CHEN Lihong WANG Yujie SUN Ping WU Chao |
| Affiliation: | 1 (1.Department of Geotechnical Engineering,China Institute of Water Resources and Hydropower Research, Beijing 100048;2.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038,3.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044) |
| Abstract: | Determination of strength parameters for geotechnical materials is a major concern in reliability studies.It is argued that this work should be based on a comprehensive study of the criteria suggested in the codes,testing data and past experiences.This paper gives a comprehensive review over more than 1000 sets of test data and back-analysis results for eight case histories of concrete dam,evaluates the impact of variation coefficients on calculations of reliability indices through a careful study,and puts forward a set of coefficients of variation for various materials.Finally,these coefficients are verified by a sensitivity study of partial factors by using concrete dam codes. |
| Keywords: | hydraulic structure coefficient of variation partial factor concrete gravity dam ratio of safety margin shear strength of rock mass |
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