刚柔组合桩复合地基加固设计与应用

Design and Application of Rigid-flexible Combined Pile Composite Foundation

利用柔性桩减少刚性桩与土之间的刚度差,使之与土结合良好,达到提高复合地基承载力特征值和柔性桩软土地基加固的置换率、减少刚性桩复合地基变形及降低软地基处理造价等目的.将水泥土柔性短桩中心用沉管桩的工法施工低强度(C10)砼桩——"刚柔组合桩"的复合地基,处理宁波北仑某仓库的软土地基,经检测、计算验证和经济型比较,表明刚柔组合桩复合地基法可应用于软土地基工程,且能降低造价.

Rigid pile composite foundation is constructed by sinking cement piling center into the rigid pile, through the reduction of flexible piles with rigid stiffness of pile, the rigid-and-flexible combination with a good mix of soil and a high bearing capacity of pile is formed. Composite foundation of stiffness of pile （C10） has done. Comparing detection, testing and verifying and economy, soft flexible pile replacement rate, less rigid pile composite foundation deformation, and low-cost soft ground treatment are all improved for a warehouse in Beilun Ningbo.