润扬大桥北接线深层搅拌桩加固地基的关键技术研究

A The Key Technique Study On The Deep Mix Round Pile Reinforced Groundwork For RUN YANG Large Bridge North-line Connected

本文通过分析深层搅拌桩技术的适用范围和加固原理，应用深层搅拌桩技术设计计算方法，确定了有关实验参数，分析了在深层搅拌桩施工中，出现的强度不足，垂直度不能满足规范要求等问题，是施工组织方面的因素、固化土的因素和存在设计不足的原因。提出了深层搅拌桩施工质量保证措施，控制好施工设计、地质勘探、工艺试桩及加强检验，以保证深层搅拌桩的质量。并通过在润扬长江公路大桥北接线高速公路工程中的应用，取得了良好的效果．为在工程广泛应用提供了理论依据。

The paper analysis the deep mix round pile technique application bound and the reinforced theory, the application deep mix round pile technique design method to ascertain testing parameter, and analysis its intensity no enough in the deep mix round pile. vertical degree not satisfy the specification request so on. that is construction organizing factor ,solidify earth factor and design reason. Putting forward to ensure measure about the deep mix round pile construction quality, control well construction design, geologic ce , technics testing and check testing, ensure the deep mix round pile quality. The effect is very well according to Run Yang Chang Jiang highway large bridge North-line connected, and provide the theory basis.