摘要
研究目的:找到与不规则形状形式的弹性支承式无砟轨道道床板等效的实体板的等效厚度。研究方法:用ANSYS有限元分析软件模拟单元道床板在列车及温度载荷作用下的外载条件,选取5个掏空体积分别计算出所对应的等效实板厚度,再对比分析分别用二次拟合法求出的拟合函数与用Newton插值法得出插值函数,从而计算出一定范围内不同掏空体积所对应的等效实板厚度之间的对应关系。研究结论:等效厚度与道床板掏空处尺寸有密切关系,可用函数近似表示出来。
Research purposes： This paper finds the thickness of solid slib which replaced slab of elastic supporting block ballastless track.Research equivalent methods：Five kinds of volume that taken out in slab are selected out and five kins of numerical value of solid slab are calculated out by a software tool of ANSYS. Then fitting function and Newton interpolation function can be structured, and the numerical value of equivalent solid slab thickness can be solved aften the two functions are contrastive analysed.Research conclusions：The thickness of solid slib is effected greatly by the size of sleeper, where are embedded is empty, and can be structured by some function.
出处
《铁道工程学报》
EI
北大核心
2007年第11期27-31,共5页
Journal of Railway Engineering Society
关键词
道床板
无砟轨道
插值函数
拟合函数
实体板
等效厚度
slab
ballastless track
interpolation function
fitting function
solid slab
equivalent solid slab thickness
