杭州湾跨海大桥混凝土结构耐久性原位监测预警系统  

In-situ Monitoring and Early Warning System for Durability of Concrete Structure of Hangzhou Bay Sea-crossing Bridge

作　　者：干伟忠[1,2] RAUPACH M 金伟良[1] 吕忠达[4] 

机构地区：[1]浙江大学结构工程研究所,浙江杭州310027 [2]宁波工程学院混凝土结构耐久性研究所,浙江宁波315016 [3]亚琛工业大学土木工程研究所,北莱茵威斯特法伦亚琛52062 [4]杭州湾大桥工程指挥部,浙江宁波315327

出　　处：《中国公路学报》2010年第2期30-35,共6页China Journal of Highway and Transport

基　　金：国际科技合作计划重点项目(2005DFA70810);交通部科技项目(2003319H01010);国家自然科学基金重点项目(50538070)

摘　　要：为了确保杭州湾跨海大桥混凝土结构达到百年设计使用寿命,评价混凝土结构耐久性状况的动态发展,通过对预埋式钢筋腐蚀无损监测传感系统的国际合作研究,确定了基于电化学原理和辅助光纤技术的耐久性监测技术思路,制定了该工程耐久性动态预报监测平台的构架技术方案,捕获了结构各部位腐蚀预警的个性化判据,优化了全桥测点的布置,集成、改良并安装了控制关键部位的全套系统(共计48套监测单元)。工程实测结果表明:测试数据稳定,并且与实验室研究数据吻合。In order to attain a-hundred-year-long designed service life for the concrete structure of Hangzhou Bay Sea-crossing Bridge and evaluate the development trend of the state for durability, through international cooperation research on embedded non-destructive permanent monitoring of the corrosion risk of steel bar, the technical thought of durability monitoring based on electrochemical principles and assistant optical fiber technology was determined. The relevant technical solution for the monitoring platform of dynamic prediction for the structure durability was given. The characteristic criteria for corrosion early warning of every part of the structure was set. The arrangements of measuring position of the bridge were optimized. The whole system （consisting of 48 sensors） of controlling main parts was integrated, improved and installed. Practical test results show that test data are constant and agree well with data got by laboratorial research.

关 键 词：桥梁工程 混凝土结构 电化学原理 耐久性 预警系统 无损监测 

分 类 号：U446.2[建筑科学—桥梁与隧道工程]