盾构隧道施工对桩基变形与内力影响研究

Shield Tunnel Construction on the Deformation and Internal Forces of Pile

针对隧道穿越桩基-框架结构工程算列,建立隧道-地基-桩-框架共同作用的数值模型。数值计算后得到了隧道穿越过程中桩的变形与内力的变化规律:盾构隧道施工对桩的影响区域可分为三个区域,盾构隧道施工对这个三个区域桩的位移、轴力和附加弯矩的影响均有明显的不同。

A interaction numerical model of tunnel-foundation-pale-frame is established,response to tunnel crossing pile foundation-frame structure.The numerical model obtains change regularity of piles＇s deformation and internal force after computed.The impact area of shield tunnel construction on the piles can be divided into three regions.The displaccment,axial force and additional moment of the piles in the three regions have significantly different effect by shield tunnel construction.