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INTERPRETATION OF STRESS PATHS FROM PRESSUREMETER TESTS IN SAND

机译:砂内压力表试验的应力路径解释

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This paper presents a method to obtain the constitutive relationships of sands from in-situ drained self-boring pressuremeter tests. Plane-strain conditions and Rowe's stress-dilatancy theory are assumed to hold to determine effective stress paths. The proposed method appears to correctly render the response behavior of loose to dense sands. The two parameters that are needed to interpret the pressuremeter expansion curves are the initial effective horizontal pressure at rest, sigma_(ho)', and the effective friction angle of the sands at constant volume, phi_(cv)'. The proposed method allows to draw drained stress paths on a Mohr-
机译:本文介绍了一种方法,以获得原位排出的自钻石测压仪测试的砂的本构关系。假设平面 - 应变条件和Rowe的应力膨胀理论以确定有效的应力路径。所提出的方法似乎正确地使松散的响应行为致密。解释压力表膨胀曲线所需的两个参数是静止,Sigma_(Ho)'的初始有效水平压力,以及恒定体积下的砂的有效摩擦角,PHI_(CV)'。所提出的方法允许在MOHR上绘制排水的应力路径 -

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