钢筋混凝土结构耗能型损伤的表征及量化方法  

Characterization and Quantification of Energy Dissipation Damage in Reinforced Concrete Structures

作　　者：王贵妃 盛惠琴 王莹 WANG Gui-fei;SHENG Hui-qin;WANG Ying(Jiangsu Jianyan Construction Engineering Quality and Safety Appraisal Co.,Ltd,Nanjing Jiangsu 210008 China)

机构地区：[1]江苏建研建设工程质量安全鉴定有限公司,江苏南京210008

出　　处：《江苏建筑》2022年第6期27-30,36,共5页Jiangsu Construction

摘　　要：文章从简单的混凝土梁的损伤入手,研究钢筋混凝土构件耗能型损伤表征的思路和方法,论证失效能量UFE的确定性和影响因素,并将结果与常见的刚度损伤指标及面积损伤指标比较,验证该方法在混凝土构件损伤分析中的适用性和合理性。在此基础上给出结构失效能量UFE计算方法及给定损伤本构关系下的损伤附加应变能的计算方法,并结合单调加载及地震作用下的钢筋混凝土框架损伤演化的有限元计算结果进行损伤分析。研究结果表明:文章提出的耗能型损伤表征得到的量化结果与柔性损伤指标及Park-Ang损伤指标变化趋势一致,耗能型损伤表征的量化结果可用于钢筋混凝土结构主要构件的损伤评估。From simple damage of concrete beam, reinforced concrete member energy dissipation type lesion characterization of the ideas and methods, demonstrated failure energy UFEcertainty and influence factors, and the results and the stiffness of common damage index and the area of damage index comparison, validation of the method in the analysis of concrete component damage applicability and rationality. Based on the research,structural failure energy UFEcalculation method is given and a given damage constitutive relation of damage and the calculation method of additional strain energy and combining the monotonic loading and the seismic damage of reinforced concrete frame under the action of evolution to analyze the damage of the finite element calculation results.The results show that the quantified results of the energy-dissipating damage characterization proposed in this paper are consistent with the variation trend of the flexible damage index and the Park-Ang damage index, indicating that the quantified results of the energy-dissipating damage characterization proposed in this paper can be used for the damage assessment of the main members of reinforced concrete structures.

关 键 词：损伤附加应变能 钢筋混凝土结构 结构损伤 量化分析 

分 类 号：TU311[建筑科学—结构工程]