In order to achieve simultaneous detection of elastic pads and assembly static stiffness of multiple sets of fasteners under continuous tracks,the laboratory testing principle for elastic pads and assembly static stiffness of fasteners was analyzed.A continuous track fastener elastic pad and assembly static stiffness testing platform was built,and a testing process was developed.The calculation formula for elastic pads and assembly static stiffness of continuous track fasteners based on internal forces of fasteners was theoretically derived.By establishing a finite element simulation model to analyze the stress on fastener nodes and testing the elastic pad and assembly static stiffness of fasteners at different loading positions,the accuracy and reliability of the method were verified.The results show that the error of the continuous track pad and assembly static stiffness detection method based on the internal force of fasteners is within 5%,which can provide reference for the static stiffness detection of continuous rail fasteners on railway sites.
关键词
铁路轨道/扣件/静刚度检测/公式推导/试验研究/弹性垫板/扣件组装
Key words
railway track/fasteners/static stiffness testing/formula derivation/experimental study/elastic pad/assembly of fasteners
维普
万方数据