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1、第8卷第6期交通运输工程学报Vol18No162008年12月JournalofTrafficandTransportationEngineeringDec.2008文章编号:167121637(2008)0620040204简易机场道面结构的疲劳特性试验1,221许巍,岑国平,戴经梁(1.长安大学公路学院,陕西西安710064;2.空军工程大学工程学院,陕西西安710038)摘要:为了分析简易机场的合理道面结构,依托陕西西安、湖南耒阳的室内外试验段,利用直径30cm刚性承载板模拟机轮荷载圆,使用反力架、千斤顶及疲劳试验机,通过人工和机械定点重复加载模拟飞机通行,研究了
2、薄层沥青混凝土面层+水泥稳定细粒土基(垫)层道面结构在重复荷载作用下的疲劳特性。试验结果表明:推荐道面结构早期承载能力较高,在60d龄期内,整体回弹模量为200~300MPa,弯沉小于1mm;此时道面可承受飞机荷载几万至十几万次的起降通行而不破坏,并保持良好的使用性能;推荐道面结构的疲劳特性可以满足简易机场的应急使用需求。关键词:机场工程;简易机场;疲劳特性;整体回弹模量;累积塑性变形中图分类号:U416.217;V351.11文献标识码:AFatiguecharacteristicexperimentsoffieldairfieldpavementstructure1
3、,221XUWei,CENGuo2ping,DAIJing2liang(1.SchoolofHighway,ChangpanUniversity,Xipan710064,Shaanxi,China;2.SchoolofEngineering,AirForceEngineeringUniversity,Xipan710038,Shaanxi,China)Abstract:Inordertoanalyzethereasonablepavementstructureoffieldairfield,indoorandoutdoortrialroadswerebuiltinXip
4、anofShaanxiProvinceandLeiyangofHunanProvince,loadcircleinducedbyaircraftwheelwassimulatedbyusingrigidbearingplatewith30cmdiameter,theexperimentalequipmentssuchasreactionframe,hoistingjackandfatiguemachinewereused,thetaxiingofaircraftatthesamepointofthepavementwassimulatedthroughmanualand
5、mechanicalrepeatedloadings,thefatiguecharacteristicofthepavementwiththinasphaltconcretesurfaceandcementstabilizedfinegrainedsoilbase(orsubbase)wasstudied.Experimentresultshowsthattheearlycarryingcapacityoftherecommendedpavementstructureisbetter,holisticelasticmodulusisbetween200~300MPa,a
6、nditsdeflectionislessthan1mmin60days.Thestructurehasgoodusingperformance,andwillnotbedestroyedaftertenthousandstohundredthousandstimesoftakeoffandlandingofairplane.Thefatiguecharacteristicofthestructurecanmeettheemergencyrequirementoffieldairfield.5tabs,4figs,9refs.Keywords:airportengine
7、ering;fieldairfield;fatiguecharacteristic;holisticelasticmodulus;cumulativeplasticdeformationAuthorresumes:XUWei(19782),male,lecturer,doctoralstudent,+86229284787704,kgywx_xuwei@126.com;DAIJing2liang(19402),male,professor,+86229282335137,jldai@126.com.收稿日期:2008206212基金项目:
