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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監(jiān)測(cè)試驗(yàn)研究賈亮,賀世開,朱彥鵬,郭健(蘭州理工大學(xué)土木工程學(xué)院,甘肅蘭州730050)摘要:為探討高填方路堤在自重應(yīng)力和汽車荷載作用下的工后沉降,在蘭永一級(jí)公路某高填方路堤進(jìn)行了工后沉降現(xiàn)場(chǎng)監(jiān)測(cè),分別在行車道和路肩
2、位置布置單點(diǎn)沉降計(jì),監(jiān)測(cè)了工后沉降變化情況,分析了高填方路堤沉降隨時(shí)間和空間的變化規(guī)律。以填方路基工后沉降原位監(jiān)測(cè)結(jié)果為基礎(chǔ),探討了高填方路基工后沉降預(yù)測(cè)回歸模型。研究結(jié)果表明:路肩位置沉降大于行車道位置沉降;路基沉降隨時(shí)間增加而增大,高填方路堤填筑結(jié)束1a后沉降趨于穩(wěn)定;汽車荷載作用下路堤沉降不會(huì)出現(xiàn)較大的增長趨勢(shì);對(duì)數(shù)模型能較真實(shí)地反映高填方路基的工后沉降規(guī)律。關(guān)鍵詞:道路工程;工后沉降;試驗(yàn)研究;高填方路堤中圖分類號(hào):U416．1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):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、國內(nèi)學(xué)者從現(xiàn)場(chǎng)監(jiān)測(cè)、試驗(yàn)研究、沉降預(yù)測(cè)方0引言[1]面開展了高填方路基沉降的研究。馮忠居等依托路基是道路結(jié)構(gòu)的基礎(chǔ),路基的穩(wěn)定和變形控某高填方路堤工程,現(xiàn)場(chǎng)測(cè)試了原地表沉降量、分[2]制是確保汽車快速、安全、舒適運(yùn)行的前提。對(duì)高層沉降量和地表水平位移。景宏君等采用離心模填方路堤,不僅要求施工中的安全可靠和竣工運(yùn)營型試驗(yàn),研究了黃土高路堤沉降沿其高度、路線縱[3]后的穩(wěn)定,而且需要嚴(yán)格控制工后沉降,否則會(huì)出向和橫斷面方向的變化規(guī)律。黃濤等對(duì)強(qiáng)夯結(jié)合現(xiàn)局部路段的沉降過大,導(dǎo)致路基路面病害的發(fā)生。碾壓
