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针对江苏沿海某高速公路沿线的工程地质情况,结合建设和营运过程中长时间的现场沉降观测数据,总结了江苏海相软土地区水泥土搅拌桩复合地基和未进行深层处理的地基沉降变形特性,通过比较得出两类不同地基处理方法在不同阶段沉降发展过程有所不同。对施工期和营运期的沉降进行了统计,得出路面施工期与两年营运期的沉降具有较高的相关性,营运期第二年的沉降约为第一年的一半;同时对不同处理方法的沉降稳定时间进行了汇总分析,结果表明沉降控制标准的确定应结合不同的地基处理方法。
Aiming at the engineering geology along a highway along the Jiangsu coast and the long-time on-site settlement observation data during construction and operation, the settlement characteristics of cement-soil mixing piles composite foundation and deep foundation treatment without treatment in Jiangsu marine soft soil area are summarized By comparing the two different types of foundation treatment methods in different stages of subsidence development process is different. The statistics of settlement during the construction period and operation period show that there is a high correlation between the construction period of pavement and the settlement during the two-year operation period, and the settlement during the second year of operation is about half of the first year. At the same time, The settlement stability time of the method is summarized and analyzed. The results show that the settlement control criteria should be determined by combining different foundation treatment methods.