中南大学学报（自然科学版）Issue(1)：247-253,7.DOI:10.11817/j.issn.1672-7207.2016.01.034
钢筋混凝土梁疲劳累积损伤过程的等效静力分析方法
Equivalent static analysis method for fatigue cumulative damage process of reinforced concrete beam
摘要
Abstract
In order to achieve the full-range analysis and prediction of residual bearing capacity of concrete beams under high-cycle fatigue loading effectively, an equivalent static analysis method for fatigue cumulative damage process of concrete member was proposed. Firstly, according to the rules on stiffness degradation, strength reduction and the accumulation of residual deformation of materials under the fatigue loading, fatigue constitutive model of concrete and reinforced rebar in any cycle of the fatigue load were established. Based on the similarity of concrete behavior under static load and that under fatigue load, the equivalent relation was built. The equivalent static analysis method for fatigue performance of reinforced concrete member was proposed. A reinforced concrete simple-supported beam was simulated for the fatigue behavior by the method as an example. The results show that the numerical analysis results are consistent with the test results. The effectiveness and practicability are testified.关键词
钢筋混凝土/疲劳本构模型/等效静力分析/数值模拟Key words
reinforced concrete/fatigue constitutive model/equivalent static analysis/numerical simulation分类
建筑与水利引用本文复制引用
王青,卫军,刘晓春,徐港..钢筋混凝土梁疲劳累积损伤过程的等效静力分析方法[J].中南大学学报（自然科学版）,2016,(1):247-253,7.基金项目
国家自然科学基金资助项目(51174291，51109121，51378501)；铁道部重大科技项目(2008G031-18)(Projects(51174291,51109121,51378501) supported by the National Natural Science Foundation of China （51174291，51109121，51378501）
Project(2008G031-18) supported by the Major Scientific and Technology of Ministry of Railways) （2008G031-18）
