塑料排水板-真空-堆载联合预压法在深厚软土地基处理中的应用

Application of Vacuum Loading Joint Preloading and Plastic Drainage Board in the Treatment of Deep Soft Foundation

塑料排水板-真空-堆载联合预压法中沉降量的预估算,对于准确确定堆载高度、有效控制投资、提高软基处理效果具有重要意义。论文介绍该软基处理方法的基本原理,并结合工程实例,利用理正岩土和Midas GTS/NX有限元软件对深厚软土地基处理中塑料排水板-真空-堆载联合预压效果进行模拟和计算。通过计算所得沉降值确定堆载高度,并与现场实际处理效果对比,确定两种计算方式对于堆载高度的确定具有一定的参考价值。

The pre estimation of settlement in vacuum loading joint preloading and plastic drainage board is of great significance for accurately determining the surcharge height,effectively controlling the cost and improving the effect of soft foundation treatment.In this paper,the basic principle of the soft foundation treatment method above is introduced.Combined with an engineering example,the effect of vacuum loading joint preloading and plastic drainage board in deep soft foundation treatment is simulated and calculated by using Lizheng geotechnical and Midas GTS/NX finite element software.The calculated settlement values were used to determine the preloading height,and compared with the actual treatment effect on site.This two calculation methods has a certain reference value for the determination of preloading height.