含裂纹损伤钢构件塑性性能分析方法  

Plastic properties analysis method of steel members with crack damage

作　　者：昌毅[1] 余柳明 江元琪 邹杨洋 易林莉 胡文君 CHANG Yi;YU Liu-ming;JIANG Yuan-qi;ZOU Yang-yang;YI Lin-li;HU Wen-jun(School of Civil Engineering&Architectural Engineering,East China University of Technology,Nanchang 330013,China;MCC(Shanghai)Steel Structure Technology Co.,Ltd.,Shanghai 201908,China;Hunan Institute of Metrology and Test,Changsha 410014,China;Yunnan Geological Environment Monitoring Institute,Kunming 650216,China)

机构地区：[1]东华理工大学土木与建筑工程学院,江西南昌330013 [2]中冶(上海)钢结构科技有限公司,上海201908 [3]湖南省计量检测研究院,湖南长沙410014 [4]云南省地质环境监测院,云南昆明650216

出　　处：《塑性工程学报》2023年第5期157-165,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52268020;51568001);教育部产学合作协同育人项目(220502373214508);江西省研究生创新专项资金资助项目(YC2022-s610)。

摘　　要：在含裂纹损伤钢构件试验分析的基础上,考虑将含裂纹损伤钢构件的剩余极限强度近似当作材料的屈服强度,并引入含裂纹损伤钢构件的塑性承载能力Rd和脆性承载能力Rb,提出了含裂纹损伤钢构件塑性性能的分析方法,即基于剩余极限强度的Rb-Rd方法。通过对比该方法的理论计算结果与试验结果,验证了其可行性和有效性。基于剩余极限强度的Rb-Rd方法不仅弥补了含裂纹损伤钢构件塑性性能分析方法的空缺,而且能够较为快速准确地计算含裂纹损伤钢构件呈现塑性性能和脆性性能的概率。Based on the test analysis of steel members with crack damage,the residual ultimate strength of steel members with crack dam-age was approximately regarded as the yield strength of materials,and the plastic bearing capacity Rd and brittle bearing capacity Rb of steel members with crack damage were introduced,the method for analyzing the plastic properties of steel members with crack damage,namely Rb-Rd method based on residual ultimate strength,was proposed.The feasibility and effectiveness were verified by comparing the theoretical calculation results of this method with the test results.The Rb-Rd method based on residual ultimate strength not only makes up for the vacancy of plastic properties analysis method of steel members with crack damage,but also can calculate the probability of plastic properties and brittle performance of steel members with crack damage quickly and accurately.

关 键 词：钢构件 裂纹损伤 剩余极限强度 塑性性能 相关性 

分 类 号：TU312.3[建筑科学—结构工程]