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利用塑料排水板处理软土地基是比较有效的方法之一。结合南京浦口滨江大道工程,在Plaxis中建立模型,模拟了塑料排水板处理临江软基的作用效果。计算中采用了2种常用的塑料排水板等效方法:一是把塑料排水板等效为Plaxis自带的排水线模型,二是把塑料排水板等效为砂墙模型,对2种模型的计算结果进行了对比分析,并与实际监测结果进行了对照。通过比较激活与不激活排水板2种情况下软基中超孔隙水压的的消散情况,研究了排水板在处理临江软基中的效果,铺设排水板可以大大加快地基沉降固结的速度,缩短堆载预压时间。
The use of plastic drainage board to deal with soft soil is one of the more effective methods. Combined with Nanjing Pukou Binjiang Avenue project, a model was set up in Plaxis to simulate the effect of plastic drainage board to treat Linjiang soft foundation. The calculation uses two commonly used plastic drainage board equivalent method: First, the plastic drainage board equivalent to Plaxis own drainage model, the second is the plastic drainage board is equivalent to the sand wall model, the two models The calculated results were compared and analyzed, and compared with the actual monitoring results. By comparing the dissipation of excess pore water pressure in soft soil foundation with two kinds of activated and inactive drainage boards, the effect of drainage board in treating Linjiang soft ground was studied. Laying drainage board can greatly speed up settlement and consolidation of ground foundation, Shorten the preloading load time.