STATICS ANALYSIS TO PILE-SLAB STRUCTURE

摘要

Pile-slab structure is an innovation of subgrade with the development of high-speed railway, which can be used to deep soft foundation, transition section of short subgrade between the bridge and tunnel, switch section and strengthening existing subgrade etc.Overall, the theory research lags behind the practice.A model of pile-slab structure on finite difference method with the software of FLAC 3D is made in the paper.The distribution of stress and deflection of the bearing slab, pile and soil under slab respectively is analysed.The results show that pile-slab structure can reduce force and settlement of the soil under slab effectively and can satisfy the placed requirements of slab track.