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首页> 外文会议>Advances in Geotechnical Engineering: The Skempton Conference vol.1 >Prediction of mechanical behaviour of Mexico city clay: preconsolidated undrained case
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Prediction of mechanical behaviour of Mexico city clay: preconsolidated undrained case

机译：墨西哥城黏土力学行为的预测：预固结不排水案例

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General equations that have emerged from the principle of natural proportionality have been applied in the last years to describe the mechanical behaviour of geomaterials such as rocks, granular and fine soils and concrete. They were applied a long time ago to reconstituted samples of Weald clay tests performed at Imperial College, London, in the early 1960's. In this paper the improved theoretical equations are applied successfully to describe the deviator stress-strain and pore pressure, for the pre and post peak regions, for undisturbed overconsolidated Mexico city clay subjected to undrained triaxial compression tests. OCR up to 10 are considered. An important feature is the use of the new general sensitivity function in the pore pressure throughout the tests. This new sensitivity function is in terms of the natural shear strain and it allows the pore pressure all along the triaxial tests to be described, that is, in the pre-peak as well as the post-peak. This new sensitivity function provided by the principle of natural proportionality permits better description of the pore pressure than the empirical equation used by the second author in the past just only for the pre-peak region.
机译：近年来，从自然比例原理中产生的一般方程式已用于描述岩石，颗粒状和细土及混凝土等岩土材料的力学行为。很久以前，它们被用于重构1960年代初期在伦敦帝国学院进行的Weald粘土测试样品。在本文中，改进的理论方程成功地用于描述峰前和峰后区域的偏应力-应变和孔隙压力，适用于未经扰动的超固结墨西哥城粘土在不排水的三轴压缩试验中。最多可考虑10个OCR。一个重要的功能是在整个测试过程中在孔隙压力中使用了新的通用灵敏度函数。这个新的灵敏度函数是根据自然剪切应变而来的，它允许描述整个三轴测试中的孔隙压力，即在峰前和峰后。通过自然比例原理提供的这一新的灵敏度函数，比第二作者过去仅针对峰前区域使用的经验方程式更好地描述了孔隙压力。

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