为了验证我们提出的正常压密粘土的弹塑性应力应变关系,本文采用它计算软土地基上海堤的性状,并与现场实测情况进行比较。海堤下软粘土层的物理性质如表1所示。它在海堤施工期间的固结和变形的耦合问题,是根据比奥(Biot)固结理论和弹塑性理论,利用有限元分析的。海堤的断面形状和软土地基的有限元网格示于图1。计算分级进行,以模拟实际的分期施工加荷,以及施工期间与土层变形同时发生的孔隙压力的增长和消散情况。 In order to verify the elasto-plastic stress-strain relationship of the normal compacted clay proposed by us, this paper uses it to calculate the traits of the soft soil foundation Shanghai embankment, and compares it with the actual field measurements. The physical properties of the soft clay layer under the sea bank are shown in Table 1. Its coupling of consolidation and deformation during seawall construction is based on Biot’s consolidation theory and elasto-plastic theory, using finite element analysis. The cross-sectional shape of the sea dike and the finite element mesh of the soft soil foundation are shown in Figure 1. The calculation and grading are carried out to simulate the actual staged construction of the load, as well as the growth and dissipation of the pore pressure occurring simultaneously with the deformation of the soil during construction.