摘要
为了探讨轨道高低不平顺(轨道高低)实际调整量与计算调整量的关系,提出了轨道高低调整量的计算方法;建立了钢轨-扣件-轨下垫板耦合计算模型;对轨下垫板垂向刚度、轨枕间距、松开扣件个数和调整枕个数等影响因素进行了分析.研究结果表明:调整枕只有1个时,轨下垫板垂向刚度对调整量的影响较大;轨枕间距和松开扣件个数对调整量的影响较小;连续多个轨枕调整且计算调整量相同时,中间部分调整枕的调整量可以达到计算调整量.
In order to probe into the relationship between practical adjustment quantity and calculated adjustment quantity of vertical track profile irregularity,a calculation method for adjustment quantity of vertical track profile irregularity was put forward,and a coupling calculation model of rail-fastener-rail-pad was established.The influencing factors,including vertical rail-pad stiffness,sleeper span and numbers of loosened fasteners and adjustment sleepers were analyzed.The research results show that vertical rail-pad stiffness has a large influence on the adjustment quantity when there is only one adjustment sleeper,while sleeper span and the number of loosen fasteners have a little influence on the adjustment quantity.Under the condition of continuous multiple adjustment sleepers with the same calculated adjustment quantity,the adjustment quantity of in-between sleepers can reach the calculated adjustment quantity.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2012年第2期198-203,217,共7页
Journal of Southwest Jiaotong University
基金
铁道部科技研究开发计划资助项目(2009G002-C)
关键词
轨道高低不平顺
调整量
精调
有限元法
vertical track profile irregularity
adjustment quantity
fine adjustment
finite element method
