塑料排水板对软土地基固结的影响分析

Analysis of the Influence of Plastic Drainage Board on the Consolidation of Soft Soil Foundation

本文对冲击荷载下塑料排水板间距对超软土地基固结效果的影响进行分析,分析结果显示:排水板间距缩小,能够加速土体的孔隙水压力消散,增加沉降量和土压力,加固效果好。基于此相互关系,本文以DK56 km+144.9 m沙河大桥软基场地工程为研究对象,建构了排水板间距的计算模型,为确保加固效果、工期和降低工程造价,可以适度增加软土中的排水板间距,这对处理软土地基具有参考作用。

This paper analyzes the influence of the space between plastic drainage boards on the consolidation effect of ultra soft soil foundation under impact load.The analysis results show that reducing the space between plastic drainage boards can accelerate the dissipation of pore water pressure in the soil,increase settlement and soil pressure,and achieve good reinforcement effect.Based on this interrelationship and correlation,this paper takes the DK56 km+144.9 m Shahe Bridge soft foundation site project as the research object and constructs a calculation model for the space between plastic drainage boards.In order to ensure the reinforcement effect,construction period,and reduce engineering cost,the space between plastic drainage boards in soft soil can be moderately increased,which has reference value for treating soft soil foundation.