Field Test and Analysis of Piled-Raft Structure of High-Speed Railway Foundation

Piled-raft structure is used in high-speed railway to deal with the deep quaternary strata compressibility foundation, which can effectively control total settlement and differential settlement, aiming at the efficient, economical and fast treatment subgrade deformation. In this paper, based on the field test of Beijing-Shanghai high-speed railway project, the dynamic response of high-speed railway piled-raft structure is investigated. The results agree fairly well with those obtained by theoretical approach and show that settlement of the subgrade is controlled effectively by the piled-raft structure.