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提出巴西圆盘劈裂试验中拉伸模量的解析算法。结合圆盘对心受力的理论弹性解和实际试验过程中便于测量的物理参数,基于微积分的原理,通过对试样中心垂直加载方向上每一点拉应变的积分,可以得到该方向上总的变形量,进而推导出岩石拉伸模量和总位移变形量之间的定量关系式。该关系式包含加载力、试样直径、试样厚度、岩石泊松比和试样中心垂直加载方向上总位移变形量5个物理量,其意义明确,运用简便,可为求解巴西劈裂试验拉伸模量提供一种新的方法。
The analytic algorithm of tensile modulus in Brazilian disc splitting test is proposed. Based on the theoretic elastic solution of the disk to the heart force and the physical parameters that can be easily measured during the actual test, based on the principle of the calculus, by integrating the pull strain at each point in the vertical loading direction of the sample center, The quantitative relationship between the tensile modulus of rock and the total displacement is deduced. The relationship contains five physical quantities of loading force, specimen diameter, specimen thickness, Poisson’s ratio of rock and total displacement of specimen in the direction of vertical loading, which has clear meaning and simple operation. It can be used to solve the Brazilian splitting experiment Modulus of elasticity provides a new method.