软土地基沉降分析

Settlement Analysis of Soft Soil Foundation

为有效减小软土地基沉降,依托白驹大道改造及东延长线工程项目,使用理正软土地基路基设计软件计算了不同填土高度、不同水泥搅拌桩桩长、不同水泥搅拌桩桩距,计算工后沉降,开展沉降影响分析,并结合设计资料,对依托工程沿线软土地基进行加固处理。分析结果表明:填土高度和桩长对沉降影响较大,桥台和路堤相邻处填土高度宜控制在15m以内,水泥搅拌桩桩长需超过10m,经水泥搅拌桩处理后,依托工程沿线软土地基沉降满足要求。

In order to effectively reduce the settlement of soft soil foundation,relying on the reconstruction of Baiju Avenue and the east extension line project,different depths of fill,the pile length of different cement mixing piles,the distance between different cement mixing piles and the post-construction settlement are calculated by using Lizheng soft soil foundation subgrade design software,and the settlement impact analysis is made.In combination with the design data,the reinforcement treatment on the soft soil foundation along the line of the supporting project is carried out.The analysis results show that:the depth of fill and pile length will have a great impact on the settlement.The depth of fill adjacent to the abutment and embankment should be controlled within 15m,and the pile length of the cement mixing pile should be more than 10m.After being treated by the cement mixing pile,the settlement of soft soil foundation along the line of the supporting project can meet the requirements.