在役钢管桩浪溅区腐蚀损伤补强加固方法探讨  

Discussion on the reinforcement method for corrosion damage in splash zone of steel pipe pile in service

作　　者：苏昕[1] 刘思国[1] 刘岳鑫 赵金山[1] 蔡军[1] SU Xin;LIU Si-guo;LIU Yue-xin;ZHAO Jin-shan;CAI Jun(CCCC Tianjin Port Engineering Institute Co., Ltd., Tianjin 300222, China;China Resources Land Commercial Realty Management & Services (Shenzhen) Limited, Shenzhen, Guangdong 518057, China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]华润置地商业管理服务(深圳)有限公司,广东深圳518057

出　　处：《中国港湾建设》2018年第3期43-45,61,共4页China Harbour Engineering

摘　　要：钢管桩在浪溅区的腐蚀最严重,给近海工程结构带来安全隐患。但是针对钢管桩浪溅区腐蚀缺陷的维修仍以防腐蚀处理为主,忽视了腐蚀导致的钢管桩有效厚度减小、承载能力下降问题。为此,提出一种浇筑混凝土桩芯的浪溅区锈蚀钢管桩补强加固方法。对补强加固机理、钢管桩内浇筑混凝土的施工方法、有效获取黏结力的措施、桩芯黏结长度计算方法进行了探讨。Steel pipe piles were seriously corroded in the splash zone,pose a potential safety hazard to offshore engineering structures.However,the corrosion prevention of steel pipe pile was still mainly based on corrosion prevention.The decrease of effective thickness and bearing capacity of steel pipe pile caused by corrosion were neglected.Therefore,we put forward a method that pours reinforced concrete pile core for strengthening corroded steel pipe piles in splash zone.The mechanism of reinforcement,and discussed the method of concrete pouring in steel pipe pile,the measures to obtain cohesive force and the calculation method of bond length of pile core were discussed.

关 键 词：近海工程 在役钢管桩 混凝土桩芯 黏结应力 黏结长度 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程] TU528.571[交通运输工程—船舶与海洋工程]