盐通高速公路先导段软基处理沉降观测与分析

以盐通高速公路先导试验段为例,通过对路基施工过程中的沉降观测,详细地分析了填土(等载)预压、铺砂垫层、粉(湿)喷桩、插塑料排水板、挤密碎石桩等各种地基处理方案中路基的沉降变形规律,根据沉降观测数据分析结果得出结论,并说明各种加固软基方案在解决路堤稳定性、缩短工期和加固效果方面各自具有的优势。

Settlement survey and analysis of the treated softbase of the Yantong Expressway leading segment

By taking example for the leading segment of Yantong Expressway, through the survey on the settlement of the roadbase during construction, deformation characteristics of settlement of roads treated with various methods including soil filling (equally loaded) preload, sand cushion, powder (wet)-injection piles, inserting plastic drain boards, and packing crushed stone piles were studied. From the results of analyses on the data of settlement survey,conclusion is that each method for consolidating softbase has its own advantage respectively in addressing the stability of embankment, reducig construction time for project and enhancing consolidation performance.