CAJ | 학술논문

为确定抗剪公式和抗剪断公式的适用工况，研究了岩体抗剪断参数不同均值、不同概率分布以及摩擦系数的变异系数对建筑物可靠度指标的影响；利用规范规定的岩体抗剪断参数对国内已建混凝土坝进行相应的可靠度指标计算和评价，并分别计算抗剪安全系数和抗剪断安全系数；按照规范规定黏聚力取对数正态分布，摩擦系数取正态分布，证明两者取值范围能够计算出合理的可靠度指标或安全系数，摩擦系数的变异系数对可靠度指标影响极大；建议岩体力学参数取值采用SL 319-2005《混凝土重力坝设计规范》的规定值，黏聚力和摩擦系数的概率分布均选择对数正态分布为宜，抗剪公式和抗剪断公式适用于不同的工程地质条件。
위학정항전공식화항전단공식적괄용공황，연구료암체항전단삼수불동균치、불동개솔분포이급마찰계수적변이계수대건축물가고도지표적영향；이용규범규정적암체항전단삼수대국내이건혼응토패진행상응적가고도지표계산화평개，병분별계산항전안전계수화항전단안전계수；안조규범규정점취력취대수정태분포，마찰계수취정태분포，증명량자취치범위능구계산출합리적가고도지표혹안전계수，마찰계수적변이계수대가고도지표영향겁대；건의암체역학삼수취치채용SL 319-2005《혼응토중력패설계규범》적규정치，점취력화마찰계수적개솔분포균선택대수정태분포위의，항전공식화항전단공식괄용우불동적공정지질조건。
In order to determine the applicability of the shear formula and anti-cut formula, we present the studies of the impact of shear parameters of rock mass at different mean, probability distribution, and variation coefficient of friction coefficient f on buildings reliability index. Additionally, we calculate and evaluate the reliable indicator of domestic built concrete dam with shear parameters of rock works. In accordance with the specification, the coefficient c takes a lognormal distribution and the distribution f ranges of both institutions reasonably provide reliability index or safety factor, and the shear coefficient of variation of the parameter f has a great impact on the reliability index. The results show that the rock mass mechanics parameters should conform to specified value in the Design Specification for Concrete Gravity Dam( SL 319-2005), and the probability distribution of c and f appropriately take a lognormal distribution model. Further, the shear formula and anti-cut formula are suitable for different operating conditions.