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软土地基的处理是保证道路使用质量与寿命的关键环节,本文结合齐宁跨线桥段中的路基段软土地基处理的工程实例,对袋装砂井处理软土地基施工期间的路基沉降与稳定性动态进行监测。对监测中的沉降进行分析,需延长预压时间来满足路基的工后沉降;路基稳定性各个方面监测,路基稳定性良好,未发生剪切破坏。在新建道路结合软土地基的实际情况采用袋装砂井堆载预压法加固软土地基,处理效果基本达到预期要求。
Soft ground treatment is to ensure the quality of road use and life of a key link, combined with the cross-section of Qining over the soft ground subgrade project example, the bagged sand processing of soft ground during subgrade settlement Dynamic monitoring with stability. Analysis of settlement during monitoring needs to prolong the preloading time to meet the post-construction settlement of subgrade; all aspects of roadbed stability monitoring, roadbed stability is good, no shear failure occurs. In the new road combined with the actual situation of soft ground bagged sand filled preloading method to reinforce the soft soil foundation, the treatment effect basically reached the expected requirements.