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《山區(qū)公路水泥混凝土橋面瀝青鋪裝關(guān)鍵技術(shù)的研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、摘要我國(guó)山區(qū)面積廣大,山區(qū)面積占全國(guó)總面積的2/3,受復(fù)雜地形、地貌和地質(zhì)等條件限制,山區(qū)高速公路在進(jìn)行設(shè)計(jì)時(shí),為了適應(yīng)路線線形布設(shè)的需要,橋梁構(gòu)造物所占比例越來(lái)越大。因此,橋面鋪裝層質(zhì)量的好壞,直接關(guān)系到整個(gè)山區(qū)高速公路的建設(shè)質(zhì)量。近年來(lái),橋面鋪裝層出現(xiàn)的車(chē)轍、開(kāi)裂、坑槽和松散等早期病害,已引起了工程界的高度重視。由于橋面鋪裝層受力比較復(fù)雜,工作環(huán)境特殊,因而對(duì)其強(qiáng)度、柔韌性、高溫穩(wěn)定性、疲勞耐久性和防水性等均有較高的要求。本文主要針對(duì)水泥混凝土箱梁連續(xù)橋橋面鋪裝為研究對(duì)象,以瀝青鋪裝層為主,結(jié)合目前國(guó)內(nèi)外橋面鋪裝層使用現(xiàn)狀,依托西漢高速公路
2、橋面鋪裝工程,對(duì)山區(qū)高速水泥混凝土橋面鋪裝層的典型病害成因分析、結(jié)構(gòu)力學(xué)分析、鋪裝層與防水粘結(jié)層結(jié)構(gòu)組合、材料及路用性能、施工工藝和施工質(zhì)量控制技術(shù)展開(kāi)系統(tǒng)研究,對(duì)今后山區(qū)高速公路水泥混凝土橋面鋪裝層設(shè)計(jì)、施工和質(zhì)量控制有重要的現(xiàn)實(shí)意義。關(guān)鍵詞:山區(qū)公路、水泥混凝土、橋面瀝青鋪裝、防水粘結(jié)層、聚酯纖維、有限元、力學(xué)分析AbstractMountainousareaswhichaccountfor2/3oftheChina'stotaJareasareverylarge.Whenmountainousfreewaysaredesigned,the
3、yaresubjectedtocomplextopography,geomorphologyandgeologyconditions.Theproportionofbridgestructuresisincreasinginordertomeettheroutelinetype.Therefore,thedeckpavementqualityisdirectlyrelatedtothequalityoftheentiremountainousfreewaysconstruction.Inrecentyears,therewereearlydis
4、easessuchasrutting,cracks,potholesandsurfacelooseningindeckpavementlayers,whichhadarousedgreatattention.Therequirementsofstrength,flexibility,hi曲temperaturestability,fatiguedurabilityandwaterproofnessareveryhighduetothedeckpavementlayercomplexforcesandspecialworkenvironment.
5、Themaintopicsofthisthesisarethedeckpavementwhicharecementconcreteboxgirdercontinuousbridgesfocusingontheasphaltpavementlayer.ThethesisreliesonthedeckpavementengineeringofXi’an—Hanzhongfreewaycombined、歷ththecurrentsituationsfordeckpavementathomeandabroad.Thecausesfortypicaldi
6、se.a(chǎn)ses,structuralmechanics,structurecombinationofpavementlayerandwaterproofandcohesivelayer,materialsandpavementperformance,constructiontechniquesandconstructionqualitycontroltechniqueswerestudiedsystematicallyforthedeckpavementofcementconcreteinmountainousfreeway.Thestudie
7、dresultshaveimportantpracticalsignificanceforthedesign,constructionandqualitycontrolofdeckpavementofcementconcreteinmountainousfreewayinthefuture.Keywords:mountainoushighway,cementconcrete,deckasphaltpavement,waterproofandcohesivelayer,polyesterfiber,fmiteelement,mechanicala
8、nalysis長(zhǎng)安大學(xué)碩士學(xué)位論文1.1問(wèn)題的提出第一章緒論弟一早殖下匕我國(guó)幅員遼闊,地形復(fù)雜多樣,山區(qū)面積占全國(guó)總面積的2/3,山區(qū)面積廣大,給交通