素混凝土桩技术的应用及缺陷加固处理探究

Study on Technical Application and Defect StrengtheningTreatment of Plain Concrete Pile Technology

通过实际工程案例,探讨了素混凝土桩在淤泥地基处理中的应用。施工完成后发现,两处桩基承载力不足,经对比分析,决定采取补桩加固法对其进行加固,令问题桩基竖向承载力由原来的3538 kN增大至5573 kN,高出设计值4500 kN约23.8%,满足实际承载力要求,节约工期约20 d、人工6人、费用7.8万元,可为类似土建桩基项目积累经验。

The study discusses the application of plain concrete pile in the treatment of silt foundation through practical engineering cases.After the completion of construction,it is found that the bearing capacity of two pile foundations is insufficient.After comparative analysis,it is decided to adopt the method of pile reinforcement to strengthen plain concrete pile,and finally the vertical bearing capacity of pile foundation increases from the original 3538 kN to 5573 kN.It is about 23.8%higher than the design value of 4500 kN,meeting the actual bearing capacity requirements,and saving the construction period of about 20 d,6 workers,and the cost of about 78000 yuan.The study aims to accumulate experience for similar civil pile foundation projects.