| 直剪强度指标的可靠度统计方法 |
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| 引用本文： | 陈立宏,赵宇飞.直剪强度指标的可靠度统计方法[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 陈立宏 赵宇飞 |
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| 作者单位： | 1. 北京交通大学土木建筑工程学院,北京,100044
2. 中国水利水电科学研究院,北京,100044 |
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| 基金项目： | 国家自然科学基金(50909002); 水利部行业公益性项目(200801005) |
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| 摘 要： | 矩法和线性回归法能得到较为准确的岩土抗剪强度指标的均值,但是在统计标准差或变异系数时,矩法常常面临样本容量偏小而导致变异系数偏大的困难,而常规线性回归法无法给出实际所需的抗剪强度指标的标准差。本文从可靠度理论出发,利用正交标准化变量空间中原点到极限状态线最短距离为可靠指标的原理,提出了一种利用Excel规划求解功能求解抗剪强度参数的简便方法。将这一方法应用于91组404个水利水电岩土工程二类岩体与混凝土胶结面大型直剪试验结果的统计中,并将结果与其它方法进行了对比。
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| 关 键 词： | 抗剪强度 可靠度 岩体 规划求解 |
Reliability Method to Estimate Shear Strength Parameters |
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| CHEN Li-hong,ZHAO Yu-fei.Reliability Method to Estimate Shear Strength Parameters[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | CHEN Li-hong ZHAO Yu-fei |
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| Affiliation: | CHEN Li-hong1,ZHAO Yu-fei2(1.School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China,2.Chinese Water Resource and Hydropower Research Institute,China) |
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| Abstract: | The moment method and linear regression method are main methods for estimating shear strength parameters of rock and soil.But the moment method is apt to overestimate the variation of strength parameters due to smaller sample size,and the conventional linear regression method cannot calculate the standard deviation to this paper,based on the reliability theory,a new method employed excel programming function is developed to estimate the shear strength parameters.The method is simplified by the principle tha... |
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| Keywords: | Shear strength Reliability Rock mass Programming |
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