摘要
目前对轨道板开裂计算都局限于一些特殊位置,且忽略了多种荷载工况组合,同时规范计算轨道板拉压应力并未细化,不便于实际应用。为了更为全面地反映处于多种荷载工况组合下的单块轨道板各个位置处裂纹情况,本文借助通用软件ANSYS自带混凝土开裂分析模块,分析了轨道板在不同荷载工况组合下的混凝土开裂情况,结果表明:单独列车荷载或者正温度梯度作用条件下轨道板混凝土裂纹甚微,列车荷载与负温度梯度共同作用使轨道板混凝土裂纹现象最严重,其对轨道板结构抗裂设计具备一定的参考价值。
The present studies related the crack of track slab are confined to the special location and leave the load combinations be out of consideration,meanwhile.The proposed equation by design code which is used to express the limite state of crack of track slab is not detailed.This paper took advantage of ANSYS software to analyze the crack being in different location of track slab which was in situation of load combinations,the result showed that the single load such as train load or temperature gradient could hardly make the track slab cracked,the train load combine the negative temperature gradient would make the crack of track slab more serious.All of these could provide the references to the crack resistance of track slab.
作者
杨艳
YANG Yan(School of Transportation and Automotive Engineering/Panzhihua University,Panzhihua 617000,China)
出处
《山东农业大学学报（自然科学版）》
北大核心
2021年第1期109-114,共6页
Journal of Shandong Agricultural University：Natural Science Edition
基金
攀枝花市科技计划项目:高钛渣轻型空心叠合板在装配式结构中的应用研究(2018CY-G-20)。
