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1、第34卷第3期公路交通科技Vol．34No．32017年3月JournalofHighwayandTransportationResearchandDevelopmentMar．2017doi:10．3969/j．issn．1002-0268．2017．03．003高填方路堤工后沉降监测试验研究贾亮,贺世开,朱彦鹏,郭健(兰州理工大学土木工程学院,甘肃兰州730050)摘要:为探讨高填方路堤在自重应力和汽车荷载作用下的工后沉降,在兰永一级公路某高填方路堤进行了工后沉降现场监测,分别在行车道和路肩
2、位置布置单点沉降计,监测了工后沉降变化情况,分析了高填方路堤沉降随时间和空间的变化规律。以填方路基工后沉降原位监测结果为基础,探讨了高填方路基工后沉降预测回归模型。研究结果表明:路肩位置沉降大于行车道位置沉降;路基沉降随时间增加而增大,高填方路堤填筑结束1a后沉降趋于稳定;汽车荷载作用下路堤沉降不会出现较大的增长趋势;对数模型能较真实地反映高填方路基的工后沉降规律。关键词:道路工程;工后沉降;试验研究;高填方路堤中图分类号:U416．1文献标识码:A文章编号:1002-0268(2017)03-
3、0015-05ExperimentalStudyonMonitoringofPost-constructionSettlementofHigh-filledEmbankmentJIALiang,HEShi-kai,ZHUYan-peng,GUOJian(SchoolofCivilEngineering,LanzhouUniversityofTechnology,LanzhouGansu730050,China)Abstract:Toexplorethepost-constructionsettl
4、ementofhigh-filledembankmentundertheactionofselfweightstressandvehicleload,thepost-constructionsettlementofahigh-filledembankmentofLanzhou-Yongjingfirstgradehighwayismonitoredonsite．Single-pointsettlementmeterisembeddedinthedrivewayandshoulderpositio
5、n,andthepost-constructionsettlementismonitored．Theregularitiesofthesettlementvaryingwithtimeandspaceareanalyzed．Basedonthein-situmonitoringdataofpost-constructionsettlementofthefilledembankment,someregressivemodelsforpredictingthepost-constructionset
6、tlementarediscussed．Theresultshowsthat(1)thesettlementofshoulderpositionisgreaterthanthatofdrivewayposition;(2)thesettlementofembankmentincreaseswithtimegoing,thesettlementofhigh-filledembankmenttendstobestableoneyearafterfilling;(3)undertheactionofv
7、ehicleload,thesettlementoftheembankmentwillnothasabiggrowth;(4)logarithmmodelcandisclosetheregularityofthepost-constructionsettlementofhigh-filledembankment．Keywords:roadengineering;post-constructionsettlement;experimentresearch;high-filledembankment
8、国内学者从现场监测、试验研究、沉降预测方0引言[1]面开展了高填方路基沉降的研究。冯忠居等依托路基是道路结构的基础,路基的稳定和变形控某高填方路堤工程,现场测试了原地表沉降量、分[2]制是确保汽车快速、安全、舒适运行的前提。对高层沉降量和地表水平位移。景宏君等采用离心模填方路堤,不仅要求施工中的安全可靠和竣工运营型试验,研究了黄土高路堤沉降沿其高度、路线纵[3]后的稳定,而且需要严格控制工后沉降,否则会出向和横断面方向的变化规律。黄涛等对强夯结合现局部路段的沉降过大,导致路基路面病害的发生。碾压
