深层水泥土搅拌桩在深厚海相淤泥质软土中的应用研究

摘要

结合深层水泥土搅拌桩处理某港口工程通港大道海相淤泥质软土的工程实例，通过埋设土压力盒、沉降板等测试元件，对深层水泥土搅拌桩复合地基工作特性进行长期监测。比较湿喷和干喷两种工法的地基处理效果，讨论深层水泥土搅拌桩的变形控制以及荷载传递规律。结果表明，深层水泥土搅拌桩处理海相淤泥质软土的效果较好；相比湿喷工法，干喷工法更适合于高含水量的海相淤泥质软土的地基处理。%Based on the engineering example which applied the deep soil cement mixing column in marine silt soft soil of Tonggang Avenue in a port project, pressure cells and settlement plates are embedded to observe the long time working charac-teristics of composite foundation. The treatment effect of dry spray method and wet spray method in marine silt soft soil is com-pared. The deformation control effect and load transfer law are discussed. The test results show that the treatment effect of deep soil cement mixing column in marine silt soft soil is good, the dry spray method is more suitable than wet spray method in the treatment of marine silt soft soil with high water content.