土工格室和土工网改善基床 动态性能模型试验
ModelTestS加dyofDynamiePerformancesof theSubgradeRelnforcedwithGeocellandGeonet
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摘要: 介绍了分别使用土工网和土工格室加固基床的5组动态1:1模型试验。为了反映列车荷载对基床的长 期作用,每组试验均进行了100万次的重复加载试验。测试了动应力、弹性变形、永久变形等反映基床动态特性 的参量,研究了动应力、弹性变形和永久变形随动荷载而变化的规律,并建立了相关关系。分析比较了土工网和 土工格室改善基床动态性能的效果,并对效果的差异进行了分析和总结。Abstract: Fivegroupsofmodeltestsareearriedoutunderthesimulatedfieldeonditionstoexamine thedynamieperformaneesofthesubgradereinforeedwithgeoeellandgeonetrespeetively.Cyelie loaaing15repeatedlo6timesineveoupoftesttosimulatetheaetionofwheelloadonthe subgrade.Thedynamiestress,permanentdeformationandelastiedeformationaremeasuredto eharaeterizethebehaviorofthesubyde,andtheirvariationtrendswiththedynamieloadingare studied.TheeorTelationbetweenthesesubgradePerformaneesandthed”amieload15devefoped,In addition,theirovementstothedynamieperformaneesofsubyadewithgeoeellandgeonetare analyzedandeomPared,andthediffereneesintheireffeetsarealsoanalyzedandeoneluded.
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Key words:
- railwaysub『ades /
- dynamieproperties:modeltests /
- subade /
- geoeell /
- geonet /
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