摘要
以典型钢筋混凝土柱体为主要研究对象,基于相似理论和量纲分析法推导爆炸加载下钢筋混凝土柱体的相似律关系,并使用有限元仿真软件LS-DYNA对不同比例缩比模型进行数值模拟,以验证相似律关系;通过量纲分析法得到相似律关系式,对柱体挠度进行等比例计算转化。相似律计算结果和数值模拟结果对比表明,柱中最大位移误差小于10%,表明新建立的相似律关系式精度满足工程应用,可以为后来学者研究爆炸加载下钢筋混凝土柱体的毁伤提供一定帮助。
Taking the typical reinforced concrete columns as the main research object,the similarity law relationship of reinforced concrete columns under explosive loading is derived based on similarity theory and dimensional analysis method.The different scaled models are established using the finite element simulation software LS-DYNA for numerical simulation to verify the similarity law relationship.The dimensional analysis method is used to obtain a relationship formula of similarity law,which can be used to calculate and convert the deflection of a column in an equal proportion;By comparing the calculated results of similarity law and the numerically simulated results,it is found that the error of maximum displacement in the column is less than 10%.This indicates that the accuracy of the established similarity law relationship satisfies engineering applications,which can provide some help for later scholars to study the damage of concrete columns under explosive loading of steel bars.
作者
王佳
尹建平
李旭东
伊建亚
王志军
WANG Jia;YIN Jianping;LI Xudong;YI Jianya;WANG Zhijun(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,Shanxi,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2023年第S01期189-195,共7页
Acta Armamentarii
基金
山西省基础研究计划自由探索类青年基金项目(202203021212136)。
关键词
钢筋混凝土柱
量纲分析法
缩比模型
爆炸载荷
reinforced concrete column
dimensional analysis method
scaled model
explosive loading