摘要
为准确预测钢筋混凝土构件的时变抗力,回顾了锈蚀钢筋混凝土构件力学性能的研究现状,总结了既有锈蚀钢筋混凝土结构的梁、柱抗力衰变模型,指出了现阶段研究存在的不足及有待进一步探讨的方向.结果表明:腐蚀影响下的结构抗力衰变模型的建立尚未达成统一共识;抗力衰变研究主要关注承载力、变形等外部宏观力学性能的演化,对破坏过程中内部细/微观损伤研究相对较少;劣化钢筋混凝土构件试验多采用小比例模型,存在一定的尺寸效应;传统的室内加速锈蚀不足以满足实际构件性能演化的模拟需要,依托人工环境模拟试验平台,应综合考虑外部荷载与内部劣化的耦合影响,开展更为先进的加速锈蚀试验.
To accurately predict the time-varying resistance of reinforced concrete members, the research status of mechanical properties of corroded reinforced concrete members were reviewed, and the existing resistance decay models of corroded reinforced concrete beams and columns were investigated and elaborated. The shortcomings of current research and the research directions were pointed out. The results show that there is no consensus on the establishment of structural resistance decay model under the influence of corrosion. Resistance decay research mainly focuses on the evolution characteristics of external macro-mechanical properties of bearing capacity and deformation, while the research on internal micro/micro damage behavior during failure process is relatively rare. The small scale model is mainly used in the test of deteriorated reinforced concrete members, which has certain size effect. Conventional indoor accelerated corrosion is insufficient to meet the need of real simulation of the performance evolution of reinforced concrete members. Based on the artificial environment simulation test platform, more advanced accelerated corrosion tests considering the coupling effect of external load and internal deterioration should be further explored.
作者
辛景舟
苏欣
周建庭
付雷
XIN Jingzhou;SU Xin;ZHOU Jianting;FU Lei(State Key Laboratory of Mountain Bridge and Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Department of Architecture and Civil Engineering,Xingtai Polytechnic College,Xingtai,Hebei 054035,China;Guizhou Bridge Construction Group Co.,Ltd.,Guiyang,Guizhou 550000,China)
出处
《江苏大学学报(自然科学版)》
EI
CAS
北大核心
2019年第6期719-726,共8页
Journal of Jiangsu University:Natural Science Edition
基金
国家自然科学基金资助项目(51908094)
重庆市技术创新与应用示范项目(社会民生类重点研发)(cstc2018jscx-mszdX0084)
重庆市教委科学技术研究项目(KJQN201800701)
贵州省交通运输厅科技项目(2018-122-013)
关键词
钢筋混凝土结构
钢筋锈蚀
抗力衰变
理论模型
破坏模式
reinforced concrete structure
reinforcement corrosion
resistance decay
theoretical model
failure mode