| 巴西圆盘试验问题与三维抗拉强度准则 |
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| 引用本文： | 郭明伟,邓琴,李春光,王水林.巴西圆盘试验问题与三维抗拉强度准则[J].岩土力学,2008,29(Z1):545-549. |
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| 作者姓名： | 郭明伟 邓琴 李春光 王水林 |
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| 作者单位： | 中国科学院武汉岩土力学研究所,岩土力学与工程国家重点实验室,武汉,430071 |
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| 摘 要： | 巴西圆盘抗拉强度公式是基于弹性力学平面问题解析解,利用最大拉应力准则得到的,但结果与直接拉伸试验得到的强度有较大的差异.根据10种岩石(煤)的直接拉伸试验与弧形劈裂试验数据,分析了弧形加载面积对应圆心角对试样3维应力状态的影响规律,并采用三维抗拉强度准则来分析巴西试样,结果表明此准则更适合于巴西圆盘试验.
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| 关 键 词： | 巴西试验 弧形劈裂 圆心角 三维抗拉强度准则 |
| 收稿时间： | 2008-07-24 |
Brazilian disc test and 3-D tensile strength principle |
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| GUO Ming-wei,DENG Qin,LI Chun-guang,WANG Shui-lin.Brazilian disc test and 3-D tensile strength principle[J].Rock and Soil Mechanics,2008,29(Z1):545-549. |
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| Authors: | GUO Ming-wei DENG Qin LI Chun-guang WANG Shui-lin |
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| Institution: | State Key Laboratory of Geomechanics and Geotechnical, Institute of Rock & Soil Mechanics, Chinese Academy of Scoences, Wuhan 430071, China |
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| Abstract: | The formula for the tensile strength of rocks under the Brazilian disc test is based on the plane analytic solution of elastic theory,which is obtained through the principle of maximal tensile stress..But the result is very different from the result of direct tensile test.According the data between direct tensile test and arc splitting test of ten kinds of rocks,the rule of 3-D stress because of central angle of arc loading area is analyzed;and adopting 3-D tensile strength principle to analyze the samples,... |
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| Keywords: | brazilian test arc splitting central angle 3-D tensile strength principle |
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