挡土结构上水-土压力分算的进一步探讨

挡墙上作用的水-土压力计算方法与土压力计算方法有着密切的关系。在水-土压力分算的前提下，研究了土压力计算方法对水-土压力计算方法的影响。研究结果表明，挡墙背后土体存在着沿平面滑动和绕对数螺旋柱面转动两类临界状态，对应有两种不同类型的水-土压力分算方法。与测试结果的对比表明，得到的两类水-土压力计算结果可以作为挡墙上水-土压力的一个区间估计。

Discussion on computing water and earth pressures on retaining wall separately

The computation method of water and earth pressures on retaining wall is closely related with that of earth pressure. Under the precondition of computing water and earth pressures separately, the effect of the computation method of earth pressure on that of water and earth pressures is studied. Results show there exist two kinds of critical states of sliding on a plane and rotation around a log-spiral cylinder surface; and there are two kinds of methods to compute the water and earth pressures. Comparisons with measured data show that the two kinds of attained results can be regarded as an interval estimation of the water and earth pressures on retaining wall.