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《武漢天興洲公鐵兩用長(zhǎng)江大橋主橋荷載驗(yàn)收試驗(yàn)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、武漢天興洲公鐵兩用長(zhǎng)江大橋主橋荷載驗(yàn)收試驗(yàn)研究武勇文章編號(hào):1003—4722(2010)01—0011—06武漢天興洲公鐵兩用長(zhǎng)江大橋主橋荷載驗(yàn)收試驗(yàn)研究武勇(成都鐵路局,四川成都610081)摘要:武漢天興洲公鐵兩用長(zhǎng)江大橋主橋?yàn)?98+196+5044-196+98)m雙塔三索面鋼桁梁斜拉橋,上層6車道公路、下層4線鐵路,是目前世界上主跨跨度、設(shè)計(jì)荷載最大的公鐵兩用鋼桁梁斜拉橋。大橋的荷載驗(yàn)收工作突破常規(guī),采用科研的思路和方法。主要內(nèi)容有靜力試驗(yàn)、動(dòng)載試驗(yàn)和前期關(guān)鍵技術(shù)研究成果的實(shí)橋驗(yàn)證,首
2、次從系統(tǒng)動(dòng)力學(xué)的角度出發(fā)對(duì)車輛、橋梁和軌道的動(dòng)力特性及動(dòng)力響應(yīng)進(jìn)行了全面、系統(tǒng)的評(píng)估。根據(jù)相關(guān)標(biāo)準(zhǔn)、規(guī)范系統(tǒng)總結(jié)出一套完善的新型結(jié)構(gòu)公鐵兩用橋梁荷載驗(yàn)收的標(biāo)準(zhǔn)和方法。第一期試驗(yàn)結(jié)果表明:大橋在設(shè)計(jì)荷載作用下具有足夠的強(qiáng)度和剛度,滿足設(shè)計(jì)要求;在試驗(yàn)速度8Okm/h下,列車運(yùn)行的平穩(wěn)性、安全性和主橋結(jié)構(gòu)的動(dòng)力性能滿足相關(guān)規(guī)范和設(shè)計(jì)要求?!P(guān)鍵詞:天興洲大橋;公路鐵路兩用橋;荷載試驗(yàn);靜力試驗(yàn);動(dòng)載試驗(yàn);驗(yàn)收標(biāo)準(zhǔn)中圖分類號(hào):U448.121;U446文獻(xiàn)標(biāo)志碼:AStudyofAcceptanceLo
3、adTestingofMainBridgeofWuhanTianxingzhouChangjiangRiverRail·。cllm。-RoadBridgeVYong(ChengduRailwayAdministration,Chengdu610081,China)Abstract:ThemainbridgeofWuhanTianxingzhouChan~iangRiverRail—cum—RoadBridgeisadoublepylonandtriplecableplanesteeltrussgi
4、rdercable—stayedbridgewithspanarrange—ment(98+196+5O4+196+98)mandwithasix-laneroadwayarrangedontheupperdeckandafour—trackrailwayarrangedonthelowerdeckofthebridge.Thebridgeiscurrentlyarail—cum—roadsteeltrussgirdercable—stayedbridgehavingthelongestmains
5、panandtheheaviestdesignedloadintheworld.Theacceptanceloadtestingofthebridgebreaksawayfromconventionsandiscarriedoutinawayofscientificresearchconceptionandpractice.Thecontentsofthetestingmainlyincorporatethestaticloadtest,dynamicloadtestaswellastheveri
6、ficationofsomeearlystagekeytechniqueresearchesontheactualbridgeandthedynamicbehavioranddynamicre—sponseofthevehicles,bridgeandtrackshavebeenevaluatedforthefirsttimeall-roundedlyandsystematicallyformtheangleofthesystemdynamiCS.Inaccordancewiththerelate
7、dstandardsandcodes,asetoftheperfectcriteriaandmethodsfortheacceptanceloadtestingofthenewtypeoftherail—cum—roadbridgestructureissystematicallysummarized.Theresultsofthefirstphasetestingofthebridgeprovethatundertheactionofthedesignedload,thebridgehassuf
8、ficientstrengthandrigidityandcansatisfythedesignrequirements.Atthetestingrunningspeedof80km/h,thestabilityandsafetyoftherunningoftrainsonthebridgeandthedynamicperformance收稿日期:2009—12—28作者簡(jiǎn)介:武勇(1963一),男,高級(jí)工程師,1986年畢業(yè)于上海鐵道學(xué)院土木工程系,工學(xué)學(xué)士。12橋梁建設(shè)2010