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将渗流场与应力场进行耦合迭代得到两级边坡含有地下水时的应力分布,并将计算结果与现场实测位移进行比较。结果表明,耦合场作用的最大水平位移出现在坡顶,比不耦合法结果要大。竖向沉降位移和总位移两种方法的数据结果变化规律相同,平台以上耦合法数值高于不耦合法,以下两者基本接近。耦合法计算的总应力要大于不耦合结果,这与渗透应力的双向耦合作用是一致的,耦合法结果更接近实测数据,也进一步证明了渗透力的影响是显著的。值得注意的是平台位置处的位移及应力出现异常,不耦合结果高于耦合值,与传统的单级边坡分布特点并不一样。
By coupling the seepage field and the stress field, the stress distribution of groundwater containing two stages of slopes is obtained, and the calculated results are compared with the measured displacements in the field. The results show that the maximum horizontal displacement of coupling field appears at the top of the slope, which is larger than that of the uncoupling method. Vertical settlement and total displacement of the two methods of data changes in the same law, the coupling method above the platform is higher than the value of uncoupled law, the following two are close to. Coupling method to calculate the total stress is greater than the uncoupled results, which is consistent with the two-way coupling effect of infiltration stress, the coupling method results closer to the measured data, but also further proved that the infiltration force is significant. It is noteworthy that the displacement and stress at the platform position are abnormal, and the uncoupling result is higher than the coupling value, which is different from the traditional single-stage slope distribution.