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
蔺威威 1谷坤鹏 1刘思楠 1王泉泉 1李明1
作者信息
- 1. 中交上海港湾工程设计研究院有限公司,上海 200032
- 折叠
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12h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.
Abstract
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Key words
pile foundation/reinforcement and repair/steel sleeve/grouting operation引用本文复制引用
基金项目
国家重点研发计划(2022YFB3706504)
出版年
2024
NETL
NSTL
维普
万方数据