【摘要】 本文结合平行换乘车站深基坑工程 ,分析了支撑刚度和预加轴力对新站基坑和既有车站共用连续墙变形和内力的影响。增大支撑刚度 ,可以减小墙身位移 ,引起连续墙正弯矩减小 ,负弯矩增大。但达到一定的量级后 ,对墙体的变形和弯矩的影响很小。增大支撑预加轴力可以有效的控制连续墙的变形 ,减小墙身负弯矩。支撑刚度和预加轴力的变化对基坑开挖面以下墙体变形和内力的影响较小更多还原

【Abstract】 Combined with the deep pit engineering of parallel transfer metro station, the influence of brace stiffness and pre axial force on the deformation and internal force of the party diaphragm wall is analyzed. Increasing brace stiffness will reduce the wall displacement and result in plus bending moment reducing, negative bending moment improving. Strengthened to some extent, the brace stiffness will have little influence on wall deformation and internal force. Increasing brace pre axial force can effectively control the wall displacement and reduce negative bending moment. But both of them have little influence on the deformation and internal force of diaphragm wall under the excavation surface.更多还原