原型构件锈蚀钢筋混凝土梁承载力计算方法  

Bearing capacity calculation method for corroded reinforced concrete beam of prototype member

作　　者：刘梅梅[1] 应宗权[1] 李嘉民 赵娟[1] 梁梓豪 LIU Meimei;YING Zongquan;LI Jiamin;ZHAO Juan;LIANG Zihao(Key Laboratory of Harbor&Marine Structure Durablity Technology,Ministry of Transport,Key Laboratory of Construction Material,CCCC,CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China)

机构地区：[1]中交四航工程研究院有限公司,中交集团建筑材料重点实验室,水工构造物耐久性技术交通行业重点实验室,广东广州510230

出　　处：《水运工程》2025年第2期45-50,88,共7页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2022YFB2603000);国家重点研发计划青年科学家项目(2023YFB3711800)。

摘　　要：为了准确评估锈蚀钢筋混凝土梁受弯承载力,以3根原型构件锈蚀钢筋混凝土梁为研究对象,进行承载力试验及仿真分析,并提出可修正规范方法的锈蚀钢筋混凝土梁受弯承载力简化计算方法。采用该方法,可以根据现场检测得到的锈蚀钢筋混凝土梁构件某一根或几根钢筋截面损失率换算得到同一截面处所有钢筋的平均截面损失率,用于计算锈蚀钢筋强度利用系数,并解决了钢筋截面损失率大于10%时承载力计算不准确的问题。To accurately evaluate the bending capacity of corroded reinforced concrete beam,we take three corroded reinforced concrete beams of prototype members as research objects,carry out the bearing capacity test and simulation analysis,and put forward a simplified calculation method for bearing capacity of corroded reinforced concrete beam with modified code.By using this method,the average cross-section corrosion ratio of all the steel bars in the same section can be converted from the corrosion ratio of one or several steel bars detected in the field,which can be used to calculate the strength utilization coefficient of the corroded steel bars,and solve the problem of inaccurate calculation of the bearing capacity when the cross-section corrosion ratio of the steel bar is greater than 10%.

关 键 词：原型构件 锈蚀钢筋混凝土梁 受弯承载力 截面损失率 损伤塑性模型 广义极值分布 

分 类 号：U654[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]