冲积地层环境中的桩基加固施工技术

Pile Foundation Reinforcement Construction Technology in Alluvial Soil Environment

针对许多工程项目需要在冲积地层等特殊环境中进行施工的问题,研究提出了一种扰动-注浆一体化的桩基加固施工方法,解决了在冲积地层环境中的桥梁桩基施工问题,实现了桥梁桩基在冲积地层环境中施工时的快速施工和承载力提升。基于对桩基荷载-沉降曲线的测试,2~16 m注浆深度的桩基在荷载达到5000 kN时的沉降高度约为46 mm。

Aiming at the problem that many engineering projects need to be constructed in special environment such as alluvial formation,a pile foundation strengthening construction method with the integration of disturbance and grouting is proposed,which solves the problem of bridge pile foundation construction in alluvial formation environment,and realizes the rapid construction and increase of bearing capacity of bridge pile foundation construction in alluvial formation environment.Based on the test of load-settlement curve of pile foundation,the settlement height of pile foundation with grouting depth of 2~16 m is about 46 mm when the load reaches 5000 kN.