Continuous Track Pad and Assembly Static Stiffness Detection Method Based on Fastener Internal Force
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.
railway trackfastenersstatic stiffness testingformula derivationexperimental studyelastic padassembly of fasteners