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通过长期对粘性土滑动斜坡运动特征的监控和观测,得出了降雨和孔隙水压力与位移的经验关系式。破坏的分析没法考虑位移,因而提出一种新的估算方法。实际上大多数浅层滑动的斜坡都是沿一软弱夹层面而发生,而且将滑体视为弹性体。首先估算滑坡位移时,需要对滑动面的应力—应变状态要有充分的了解。本文提出的这种方法是在考虑剪切应力作用,并把剪切应力作为位移函数的计算方法。对于有孔隙水压力及外荷载都变化的土体,计算机程序提供其为时间函数的位移量的估算值。同时蠕变位移也进行了估算。在考虑位移对斜坡的稳定性分析时,致使我们认为用经典方法得出的安全系数是不合适的。
Through long-term monitoring and observation of the movement characteristics of the sliding slope of clayey soil, an empirical relationship between rainfall and pore water pressure and displacement was obtained. The analysis of damage cannot consider the displacement, so a new estimation method is proposed. In fact, most shallow sliding slopes occur along a weak sandwich plane, and the sliding body is considered as an elastic body. When estimating the displacement of a landslide, it is necessary to have a full understanding of the stress-strain state of the sliding surface. The method proposed in this paper considers the action of shear stress and uses shear stress as the calculation method of displacement function. For soils with varying pore water pressures and external loads, the computer program provides an estimate of the amount of displacement as a function of time. Creep displacements were also estimated. When considering the displacement stability analysis of the slope, we believe that the safety factor obtained by the classical method is not suitable.