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大直径钉形双向水泥土搅拌桩是一种新的地基处理方法。它针对传统水泥土搅拌桩存在的诸多弊端进行了相应的改进,具有良好的处理效果。简要介绍大直径钉形双向水泥土搅拌桩在申嘉湖杭高速公路练杭段的应用情况,并对其施工机械和施工工艺进行说明;通过试验检测数据和相关分析,分别从施工工艺、承载力、沉降变形及经济效益等方面,说明其优越性。
Large diameter nail-shaped two-way cement-soil mixing pile is a new method of foundation treatment. It is aimed at the many disadvantages of traditional cement-soil mixing pile, which has been improved correspondingly and has good treatment effect. This paper briefly introduces the application of large-diameter spike-shaped two-way cement-soil mixing piles in the section of Hanghang section of Shenjiahu-Hangzhou Expressway, and explains the construction machinery and construction technology. Based on the test data and correlation analysis, the construction technology, bearing capacity, Settlement and economic benefits, etc., indicating its superiority.