高速铁路桩板结构处理采空巷道地基沉降数值分析

以合肥至福州高速铁路五府山车站路基为研究对象，对采空区路基桩板结构基础沉降进行数值模拟，分析路基在不同工况下变形规律，为采空巷道上方桩板基础稳定性评价提供依据。研究结果表明:桩板结构能够有效限制采空巷道顶板的冒落垮塌，能减小采空区路基变形，表明桩+承载板结构作为采空巷道地基的工程处理方法是有效的。

Numerical Analysis on Subgrade Settlement in Treatment of Laneway along Goaf by Pile-Plank Structure along High-Speed Railway

Taking the subgrade at Wufushan Station on numerical analysis was carried out in relation to the Hefei-Fuzhou High-Speed Railway as the study object, settlement of pile-plank structure foundation for the subgrade in the mined-out area with the change law of the subgrade deformation under different conditions analyzed, which provided basis for evaluation of stability of this pile-plank foundation above the goaf. The result shows that pile-plank structure may restrict roof collapse above the laneway and reduce subgrade deformation in the goaf, demonstrating that the method using the structure of pile and bearing plank to treat foundation of laneway along goaf is effective.