后注浆技术在码头软土地基灌注桩补强工程中的应用  

Application of post-grouting technology in reinforcement project of cast-in-place piles in soft soil foundation of wharf

作　　者：李达宏 张蕊 顾祥奎 LI Dahong;ZHANG Rui;GU Xiangkui(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200030,China)

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200030

出　　处：《水运工程》2025年第3期133-138,共6页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2023YFB2604200)。

摘　　要：钻孔灌注桩因其承载能力高、对大型打桩船依赖性小、对陆域围垦结构的影响小等优点,广泛应用于港口工程建设中。当工程区软土深厚、施工经验不足时,灌注桩极易出现质量问题,此时结构安全遭到质疑,影响工程验收和投产使用。对港口工程灌注桩常见问题成因及处理方法进行归纳总结,并结合工程实例,采用后注浆技术对深厚软基超长灌注桩桩端缺陷进行修复,检测数据显示加固效果良好,保证了工程的经济性和时效性。Bored piles are widely used in harbor construction due to their high bearing capacity,low dependence on large piling vessels and low impact on land reclamation structures.When the soft soil is deep in the project area and the construction experience is not enough,the quality problem of the cast-in-place piles is very easy to occur,and then the structural safety is questioned,which affects the acceptance of the project and the commissioning of the use of the project.In this paper,the causes and treatment methods of common problems of cast-in-place piles in wharf are summarized,and combined with engineering examples,the defects at the end of super-long cast-in-place piles with deep soft foundation are repaired by using post-grouting technology,and test data show that the reinforcing effect is good,which ensures the economy and timeliness of the project.

关 键 词：港口工程 软土地基 灌注桩 后注浆技术 

分 类 号：U655[交通运输工程—港口、海岸及近海工程]