Novel empirical model for predicting residual flexural capacity of corroded steel reinforced concrete beam
作者机构：Key Laboratory of Urban Security and Disaster Engineering of Ministry of EducationBejing University of TechnologyBeijing 100124China School of Civil EngineeringCentral South UniversityChangsha 410075China School of Civil and Environmental EngineeringUniversity of Technology SydneyNSW 2007Australia
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2020年第14卷第4期
页 面：888-906页
核心收录：
学科分类：1305[艺术学-设计学（可授艺术学、工学学位）] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程]
基 金：The authors acknowledge the research supports from the National Natural Science Foundation of China(Grant Nos.51820105014,51738001,U 1934217) the research funds from Australian Research Council(DEI50101751) ARC Industrial Transformation Research Hub Component Project“Nano-geopolymer composites for underground prefabricated structures”with Wuhan Zhihe Geotechnical Engineering Co.,Ltd The authors are also grateful for the financial supports of the University of Technology Sydney Research Academic Program at Tech Laboratory(UTS RAPT)and University of Technology Sydney Tech Laboratory Blue Sky Research Scheme
主 题：CRC beams flexural capacity steel corrosion database empirical models
摘 要：In this study,a total of 177 flexural experimental tests of corroded reinforced concrete(CRC)beams were collected from the published *** database of flexural capacity of CRC beam was established by using unified and standardized experimental *** this database,the effects of various parameters on the flexural capacity of CRC beams were discussed,including beam width,the effective height of beam section,ratio of strength between longitudinal reinforcement and concrete,concrete compressive strength,and longitudinal reinforcement corrosion *** results indicate that the corrosion of longitudinal reinforcement has the greatest effect on the residual flexural capacity of CRC beams,while other parameters have much less *** addition,six available empirical models for calculating the residual flexural strength of CRC beams were also collected and compared with each other based on the established *** indicates that though five of six existing empirical models underestimate the flexural capacity of CRC beams,there is one model overestimating the flexural ***,a newly developed empirical model is proposed to provide accurate and effective predictions in a large range of corrosion ratio for safety assessment of flexural failure of CRC beams confirmed by the comparisons.
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