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1、哈爾濱工業(yè)大學(xué)碩士學(xué)位論文大跨度鋼管混凝土拱橋鋼管拱肋吊裝施工控制姓名:付玉輝申請學(xué)位級別:碩士專業(yè):橋梁與隧道工程指導(dǎo)教師:陳彥江20051201哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文摘要大跨度鋼管混凝土拱橋是一種自架設(shè)體系結(jié)構(gòu),結(jié)構(gòu)的剛度是分階段逐漸組合而成的,因此對其施工過程的精確控制是實(shí)現(xiàn)設(shè)計(jì)成橋目標(biāo)的關(guān)鍵。對于采用纜索吊裝法旋工的鋼管混凝土拱橋,其施工控制的關(guān)鍵技術(shù)之一是桁架拱肋的線形控制,為保證最終的成橋線形和受力狀態(tài)滿足設(shè)計(jì)要求,需進(jìn)行施工控制仿真計(jì)算。本文以千島湖1號橋?yàn)楣こ瘫尘?,對桁架拱肋架設(shè)的施工控制問題展開研究。論文主要包括以下幾方面的內(nèi)容:(1)介紹了鋼管混凝土拱橋的
2、發(fā)展概況及主要施工方法,并對鋼管拱肋吊裝過程中的施工監(jiān)控方案作了闡述。(2)將工程優(yōu)化理論應(yīng)用于桁架拱肋吊裝預(yù)測分析中,進(jìn)行了扣索索力及拱肋節(jié)段預(yù)抬高值的最優(yōu)化計(jì)算,確定了一定約束條件下,鋼管拱肋吊裝的最合適施工路徑。(3)針對桁架拱肋架設(shè)中出現(xiàn)的線形調(diào)整問題,利用影響矩陣法進(jìn)行了解決。通過該方法可得到為滿足設(shè)計(jì)要求線形與標(biāo)高所需要的扣索長度的調(diào)整量和扣索索力增量。本文的部分計(jì)算成果己應(yīng)用于千島湖1號橋的施工控制中,并可為同類橋型的施工控制提供參考。關(guān)鍵詞鋼管混凝土拱橋;施工控制;吊裝預(yù)測;線形調(diào)整AbstractLong—spanconcrete—filledsteeltubula
3、rarchbridgeiSastructureofself-erectedsystemwhoserigidityformsstepbystep.Accordingly,precisecontrolintheconstructionphaseiscrucialinachievingthedesignobjeetiveofCFSTarchbridge.AsforCFSTarchbridgeconstructedbycable-suspentmethod,oneofthekeytechnologiesisthecontroloftheline·shapeoftrussarchrib.Met
4、hodofsimulationcalculationofconstructioncontrolisadoptedtoensurethefinalline-shapeofbridgeanditsstrengthstatesatisfiestherequirementofdesign.TakingQianDaoHu-Ibridgeasanengineeringinstance,theconstructioncontrolontheerectionoftrussarchribiSdiscussedinthisthesis.Thethesisincludesthefollowingthree
5、mainaspects:(1)SummaryofthedevelopmentandthemajorconstructionmethodofCFSTarchbridgeareintroduced,andtheconstructioncontrolschemeaboutsteeltublararchrib—assemblingcoBrseoflong-spanCFSTarchbridgeisdescribed.(2)Thepaperintroducestheoptimizationtheoryandmethodintothepredictiveanalysisoferectingtrus
6、sarchfibs.Thebuckle—cableforcesandthepre-risingelevationsofarchribsegmentarecalculated.nlemostappropriateconstructionprocessofarehribsinstallationareobtained.(3)Thealignmentadjustmentproblemabouterectioncourseoftrussarchribissettledbytheinfluencematrixmethod.Therequiredadjustmentvalueofcablelen
7、gthandincrementofcabletensionforidealalignmentCanbeobtainedbythismethod.ApartofthecalculationachievementofthispaperhasbeenappliedtotheconstructioncontrolofQianDaoHu-Ibridge.TheachievementofthispaperCanalsoprovidereferenceforthecon