旋喷桩在重载铁路路基下沉病害整治中的应用

摘要

With reference to subgrade settlement treatment of heavy haul railway, this paper introduces design scheme, construction quality control with inclined churning jet pile technology used in subgrade settlement treatment of existing lines, states reinforcement mechanism of churning jet pile and the effect of settlement treatment detected by transient Rayleigh wave. With a view to the treatment effect, churning jet pile technology used in subgrade settlement treatment of existing line is feasible and effective, and the treatment results detected and evaluated rapidly with transient Rayleigh wave are reasonable and reliable.%结合某重载铁路路基下沉病害整治工程，介绍斜打旋喷桩技术在既有路基下沉病害整治中的设计方案及施工质量控制措施，阐述旋喷桩加固机理，并采用瞬态瑞雷波法检测整治效果。从整治效果来看，斜打旋喷桩技术用于既有线路基下沉病害整治是可行的、有效的，采用瞬态瑞雷波法进行整治效果的快速检测与评价，其检测结果是合理可信的。