小洋山深厚软基海堤监测成果和数值模拟

Numerical Simulation of Plastic Drainage Plate Reinforcement for Soft Base Sea Embankment in Xiaoyangshan

在深厚软土地基上填筑海堤时,堤身的沉降、水平位移、孔隙水压力监测等是指导施工、控制加载速度、反映海堤安全状态的有效手段.借助数值模拟计算手段,与实测数据进行对比.结果表明,采用有限元数值模拟计算海堤沉降、变形等是一种比较可靠的方法,模型中未考虑排水板的真实情况,未能准确反应土体排水固结过程.实际上,堤基土体的固结是个比较漫长的过程,设计或施工时应预留足够超高,满足工后沉降需要.

In the deep soft soil foundation filling seawall,embankment settlement,horizontal displacement and pore water pressure monitoring are effective means to guide the construction,to control the loading speed and to reflect the safety state of the sea wall. The numerical simulation method is used to compare with the experimental data. The results show that the numerical simulation of the sea wall settlement and deformation is a reliable method. In fact,the consolidation of embankment soil is a long process,when designing or construction should be reserved for high enough,to meet the settlement after acceptance.