铁道科学与工程学报Issue(4)：749-754,6.
WJ －8型小阻力扣件轨下胶垫滑出纵向阻力试验研究
Experiment of longitudinal resistance of WJ -8 type s mall resistance fastener with the sliding of rubber pad
摘要
Abstract
The small resistance fasteners’rubber pads slide a lot on the end of span bridges.In order to deter-mine the longitudinal resistance value and its change of small resistance fastener with the sliding of rubber pad, this paper took the WJ -8 type small resistance fasteners commonly used in ballastless track for example.A ex-periment of testing the longitudinal resistance of WJ -8 type small resistance fastener was designed,and so as to get relationship between longitudinal resistance value and displacement of WJ -8 type small resistance fastener with five kinds of different amounts of sliding of the rubber pad.The curve is fitted by the least squares method, in order to get the bilinear resistance model with the different sliding of rubber pad.The results show that:with the increasing amount of sliding of the rubber pad,longitudinal resistance value of WJ -8 type small resistance fastener decreases,while the sliding is within 60 mm.The sliding has great influence on the longitudinal resist-ance,and when the sliding without 60 mm,the sliding has little influence on the longitudinal resistance.关键词
轨下胶垫滑出/WJ-8小阻力扣件/纵向阻力/最小二乘法Key words
sliding of rubber pad/WJ -8 type small resistance fastener/longitudinal resistance/the method of least squares分类
交通工程引用本文复制引用
郭成满,杨荣山..WJ －8型小阻力扣件轨下胶垫滑出纵向阻力试验研究[J].铁道科学与工程学报,2015,(4):749-754,6.基金项目
国家自然科学基金资助项目 （）
