砂桩加固软土地基侧向位移分析

以某高速铁路试验段软基处理工程的实测数据为基础,对砂桩加固软土地基的侧向位移变化规律及其与沉降的关系作了分析。分析结果可知,砂桩加固处理软基的侧向位移主要发生在填筑期,后期增长缓慢并很快趋于稳定;砂桩加固处理加快了软土层的固结速率,起到了限制侧向变形的作用,减小了软基的侧向位移。

Analysis of Lateral Displacement of Soft Ground Improved by Sand Piles

Based on the data of observations in a soft ground improvement project of a high-speed railway trial embankment,the law of development of the lateral displacement of soft ground improve by sand piles is analyzed and the relation between lateral displacement and settlement is also studied.The results show that main part of the lateral displacement of soft ground was reinforced with sand pile take place in the period of reclamation,and the later part of the displacement increases slowly and finally become stable soon.Sand pile reinforcement increases the consolidating speed and confine the lateral deformation and consistently decrease the lateral displace ment of soft ground.