现代城市轨道交通
現代城市軌道交通
현대성시궤도교통
MODERN URBAN TRANSIT
2015年
1期
24-27,33
,共5页
地铁隧道%整体道床%浮置板道床%结构动应力%计算分析
地鐵隧道%整體道床%浮置闆道床%結構動應力%計算分析
지철수도%정체도상%부치판도상%결구동응력%계산분석
metro tunnel%monolithic track bed%floating slab track structure%dynamic stress%calculation and analysis
利用ANSYS有限元软件，建立了整体道床和浮置板道床情况下隧道结构三维模型，通过对应实测轮轨力的输入，计算得到2种道床下隧道下层结构动应力的分布情况和大小。结论是，浮置板道床对于下层隧道结构动应力影响相较于整体道床小很多，且无论横向还是纵向动应力分布都更加均匀合理。从长远来看，钢弹簧浮置板轨道结构在满足减振降噪的功能前提下，可以有效减小轮轨力造成的隧道结构附加沉降。
利用ANSYS有限元軟件，建立瞭整體道床和浮置闆道床情況下隧道結構三維模型，通過對應實測輪軌力的輸入，計算得到2種道床下隧道下層結構動應力的分佈情況和大小。結論是，浮置闆道床對于下層隧道結構動應力影響相較于整體道床小很多，且無論橫嚮還是縱嚮動應力分佈都更加均勻閤理。從長遠來看，鋼彈簧浮置闆軌道結構在滿足減振降譟的功能前提下，可以有效減小輪軌力造成的隧道結構附加沉降。
이용ANSYS유한원연건，건립료정체도상화부치판도상정황하수도결구삼유모형，통과대응실측륜궤력적수입，계산득도2충도상하수도하층결구동응력적분포정황화대소。결론시，부치판도상대우하층수도결구동응력영향상교우정체도상소흔다，차무론횡향환시종향동응력분포도경가균균합리。종장원래간，강탄황부치판궤도결구재만족감진강조적공능전제하，가이유효감소륜궤력조성적수도결구부가침강。
By using the finite element software ANSYS, the paper establishes the 3D model under the tunnel structure conditions of slab track with monolithic and floating slab. By inputing the corresponding measured wheel-rail force, the paper calculates the tunnel substructure dynamic stress distribution and quantity under the 2 different track beds. The paper makes conclusion that the tunnel substructure dynamic stress effect for the floating slab track compared to the monolithic track bed is much smaller, and both horizontal and longitudinal dynamic stress distribution is more uniform and reasonable. From a long-term point of view and in the premise of having satisfied the vibration and noise reduction functions, the steel spring floating slab track structure can effectively reduce wheel-rail force, therefore reducing the additional settlement of the tunnel structures.
