不同搅拌桩现场对比试验研究

不均匀变形控制已成为路桥拼接地段桥头地基处理工程中的难点,借鉴于钉形水泥土双向搅拌桩这一新工艺,将钉形双向水泥土搅拌桩用于匝道桥与拓宽路基拼接段,从成桩质量、单桩及复合地基承载力、工期沉降量、经济效益等方面与常规双向桩及普通单向桩对比,在应用的层次上论证钉形双向搅拌桩存在较高的实用性,可为其推广及类似工况下的地基处理提供参考。

Research on In-situ-test of Different Mixing Piles

Inhomogeneous deformation control has been difficulties in bridgehead treatment, by adopting the new tech- nology of T-shaped bi-directional soil-cement mixing column, the T-shaped column has been used in the connection between the road and bridge. In the paper, comparison of the column quality, single and pile group bearing capacity, settlement during construction and economic benefits, etc. between this technology and the common bi-directional and the common single-directional columns has been conducted, which has shown that the T-shaped bi-directional mixing column is better than other types, which can also provide practical support for spreading itself to the similar ground treatment.