正负风压作用下装配式轨顶风道疲劳损伤试验研究

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中图分类号：TU441 文献标志码：A 文章编号：2095-2945（2025）28-0066-04

Abstract：Asacommonventilationstructureinsubways，prefabricatedrailtopairductswillcontinuetobeaffctedby windpressurecausedbysubwayentrancesandexits;inactualprojects，prefabricatedrailtopaiructswillcausefatigedamage undertheactionoflong-termpositiveandnegativewindpressres.，afecting theperformanceoffunctions.Byaplyingcyclic loadtoaful-scaleprefabricatedrailtopairductstructuralmodelandanalyzingthedynamicresponseresults，itisfoundthat thefatiguedamagegrowthoftheprefabricatedrailtopairductshowsapaternofrapidgrowthintheearlystageand convergenceinthelaterstage;thestructuralfatigueresistanceandoverallstabilityaregoodandcanmeetthenedsofpractical engineering applications.

Keywords： rail top air duct; fatigue damage analysis; prefabricated structure; subway; dynamic response

轨顶风道作为地铁区间隧道的重要通风结构，通常不与车站主体同时浇筑。（剩余4897字）