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直剪试验是土力学、岩石力学中应用最广泛的一种试验方法。然而,迄今为止仍有一些问题尚待解决。其中问题之一是有效面积校正问题。笔者通过室内、野外直剪试验,对各种形状的样品进行了分析,抽象出三种模型,并分别建立了各自的有效面积校正公式。期望以此为依据解决直剪试验的有效面积校正问题。综上所述,各种为不同试验目的所用的直剪试样按断面形状可抽象为三种岩样模型。圆形、矩形和椭圆形。因此直剪试验有效面积校正问题,即变为这三种模型断面样品的有效面积准确求积问题。
Direct shear test is one of the most widely used test methods in soil mechanics and rock mechanics. However, there are still some problems to be solved so far. One of the problems is the issue of effective area correction. Through indoor and outdoor direct shear tests, the author analyzed various shapes of samples, abstracted three models, and established their respective effective area correction formulas. It is expected to solve the problem of correcting the effective area of direct shear test based on this. In summary, all kinds of direct shear specimens used for different experimental purposes can be abstracted into three kinds of rock specimen models according to the sectional shape. Round, rectangular and oval. Therefore, the direct shear test effective area correction problem, that is, the exact area of the effective area of the three model cross-section sample product.