码头桩基钢套筒灌浆加固修复技术  

Reinforcement and repair technology of steel sleeve and grouting in wharf pile foundation

作　　者：蔺威威 谷坤鹏 刘思楠 王泉泉 李明 LIN Weiwei;GU Kunpeng;LIU Sinan;WANG Quanquan;LI Ming(CCCC Shanghai Harbor Engineering Design and Research Institute Co.,Ltd.,Shanghai 200032,China)

机构地区：[1]中交上海港湾工程设计研究院有限公司,上海200032

出　　处：《水运工程》2024年第5期231-236,共6页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2022YFB3706504)。

摘　　要：针对服役多年码头桩基混凝土出现的破损裂缝问题,依托宁波某码头水工大修工程,对钢套筒、灌浆作业系统及超早强灌浆料等进行设计开发。结合施工工艺形成成套加固修复技术,开展现场施工并进行质量检测。结果表明:超早强灌浆料12 h抗压强度可达到20 MPa以上,其与钢套筒黏结强度可达6 MPa以上,其他性能参数均符合规范要求;使用该成套技术在6个月内成功加固修复232根桩基。In response to the problem of damage and cracks in the pile foundation concrete of wharf that is in service for many years,relying on the hydraulic overhaul project of a certain wharf in Ningbo,we carry out the design and development of steel sleeve,grouting operation system,and ultra early strength grouting material.Combining with the construction process,we form a complete set of reinforcement and repair technology,and carry out the on-site construction and quality test.The results show that the compressive strength of the ultra-early strength grouting material can reach over 20 MPa within 12 hours,and its bonding strength with the steel sleeve can reach over 6 MPa.Other performance parameters comply with the requirements of the specification.The developed complete technology is used to successfully reinforce and repaire 232 pile foundations within 6 months.

关 键 词：桩基 加固修复 钢套筒 灌浆作业 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]