土的侧膨胀性及其对土石坝应力变形的影响

本文通过试验和计算揭示了土的侧膨胀性质对土与结构物相互作用的影响.说明了造成堆石坝混凝土面板和混凝土防渗墙应力计算中出现较大误差的重要原因之一，是土体的本构模型及其参数的确定，不能很好地模拟实际土体的侧膨胀性.同时，本文也提出，在土体本构关系中，各向异性问题不可忽视，它对提高土石坝应力应变计算的精度十分重要。

The effect of soil lateral dilation behavior on stress and strain of earth and rockfill dams

The effects of soil lateral dilation behavior on the interaction between soil and structure revealed by experiment and calculation. It helps to explain the cause of the major error occurred in the stress calculation of concrete face-plate in rockfill dam and cutoff wall. Generally, the lateral dilation behavior of soil can not be actually simulated in the constitutive model The investigation also shows that the anisotropy behavior of soil also plays an important role affecting the stress-strain relationship. It is suggested that anisotropy should be considered as an important problem in improving the constitutive model.