浙江某系杆拱桥吊杆更换的施工研究

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1、同济大学土木工程学院硕士学位论文浙江某系杆拱桥吊杆更换的施工研究姓名：冷冰峰申请学位级别：硕士专业：建筑与土木工程指导教师：徐伟;李艳明20090901目录ABSTRACTAsoneofthemostimportanttrafficfacilities，bridgeplaysanimportantroleinthedevelopmentoftraffic．Intherecenttwentyyears，generallyspeaking，bridgescannotGarrytheincreasingtrafficbecauseofincreaseofheavyvehicle，tr

2、ansportofout—of-gauge，andoverloadofsomevehicleswhichcomesaftertheconstructionsofkeyprojectsandeconomydevelopment；what’Sworse，theoldonesareagingandbroken，bridgecannotmeetthe．demandoftraffic．AS。afastdevelopingstructuralsystemrecently,bowstringarchbridgewasfavoredwidelybydesignersbecauseofitsre

3、asonablestressdistribution，relativelylowcost，easytoconstructandbeautifulcurve．AlthoughmanyarchbridgeswereconstructedinChina,therealizationonthetheoriesofsuspenderiSnotthorough,especiallythetheoriesoftherenewalofsuspenders．Meanwhile，somesystemweaknessessuchasbadantisepticpropertyofsuspendersa

4、nddifficulttoreplaceexistedinsomeoldbridgesbecauseofthelimitationoftechnology,designandconstruction．Focusingonthereplacementprojectsofsuspendersoftheoldbowstringarchbridges，accordingtothemeasuredcurveandstressbeforereplacement，applythefmiteelementtoconstructareplacingmodelandmakethecomputeds

5、tressclosetothemeasuredoneSOastogettheinitialsituation,thenanalyzethereplacementaccordingtothedesignedplanandprocessandgetthecomputedcurveandstressafterreplacement．Afterthefinishoftheproject,therealcurveandstressaremeasuredandcomparedwiththecomputedonesSOastoanalyzethedeviation．Atthesanletim

6、e，combiningtheorywithprojeetpractice，theexecutiontechnologyandskillsaresummarizedanddiscussed，andasystematicallyreplacementtechnologyofsuspendersisformedfinally．Keywords：safetyinspection；finiteelementanalysis；replacementofsuspenders；monitorII学位论文版权使用授权书本人完全了解同济大学关于收集、保存、使用学位论文的规定，同意如下各项内容：按照

7、学校要求提交学位论文的印刷本和电子版本；学校有权保存学位论文的印刷本和电子版，并采用影印、缩印、扫描、数字化或其它手段保存论文；学校有权提供目录检索以及提供●本学位论文全文或者部分的阅览服务；学校有权按有关规定向国家有关部门或者机构送交论文的复印件和电子版；在不以赢利为目的的前提下，学校可以适当复制论文的部分或全部内容用于学术活动。学位论文作者签名：槲≮硼年7月砬日同济大学学位论文原创性声明本人郑重声明：所呈交的学位论文，是本人在导师指导下，进行研究工作所取得的成果。除文中已经注明引用的内容