深圳地区混凝土结构耐久性评定及影响因素分析  

DURABILITY EVALUATION AND EFFECT FACTOR ANALYSIS OF CONCRETE STRUCTURES IN SHENZHEN

作　　者：方五军 李伟文[2] 曹文昭 FANG Wujun;LI Weiwen;CAO Wenzhao(Central Research Institute of Building and Construction(Shenzhen)Co.,Ltd.,MCC Group,Shenzhen 518055,China;College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]中冶建筑研究总院(深圳)有限公司,广东深圳518055 [2]深圳大学土木与交通工程学院,广东深圳518060

出　　处：《工业建筑》2020年第6期117-122,共6页Industrial Construction

基　　金：广东省重点领域研发计划项目(2019B111107002);深圳市科技计划项目(JCYJ20170818100641730)。

摘　　要：在阐述深圳地区的温度、湿度、盐雾和酸雨变化及其对混凝土结构耐久性影响的基础上,根据近20年深圳地区建筑物耐久性调查和检测的数据,采用分级加权评定法对各耐久性影响指标进行分析,进而评定混凝土结构耐久性损伤等级,得到深圳地区混凝土结构的耐久性现状;采用层次分析法对影响深圳地区混凝土结构耐久性的因素(钢筋锈蚀速率、Cl^-浓度、混凝土相对碳化深度、面积损伤率、强度等级和裂缝宽度)进行模糊评估,得到了影响混凝土结构耐久性的关键影响因素。The variations of the temperature,humidity,salt frog and acid rain in Shenzhen area and their effects on durability of concrete structures were described.According to the survey and field test data of building durability in Shenzhen in the past 20 years,the classification weighted assessment method was adopted to evaluate the effect factors of durability.Then the durability damage grade of concrete structures was evaluated and the durability status of concrete structures in Shenzhen was obtained.The factors affecting durability of concrete structures in Shenzhen area,including corrosion rates of reinforcement bars,concentrations of Cl^-,relative carbonation depths of concrete,area damage ratios,strength grades and crack widths,were fuzzily evaluated by the analytic hierarchy process,and the key factors were got.

关 键 词：环境条件 分级加权评定法 关键因素 层次分析法 

分 类 号：TU37[建筑科学—结构工程]