连续梁挂篮拼装与预压论文

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1、连续梁挂篮拼装与预压论文连续梁挂篮拼装与预压鸣谢摘耍预应力混凝土连续梁桥属于预应力桥梁的一种，桥梁的结构的整体性能好，刚度人，变形性小，抗震性能好。特别是具有主梁变形挠曲线平缓，桥曲伸缩缝少，行车舒适等优点。本文介绍这种技术的应用情况。大跨径预应力混凝土连续箱梁广泛采用挂篮进行悬臂浇筑施工。贝雷桁架梁因具有可分解、能快速架设和装配简单等优点，常被用作桥梁悬臂浇筑施工的挂篮承重结构。同时贝雷桁架挂篮具有构造合理、受力明确、自重较轻、利用系数高、使用安全方便等特点，更主要的是其工程费用较低。对此，本文结合常德沅水仓儿总特大型连续梁桥的

2、悬臂浇筑施工用挂篮形式，对贝雷桁架挂篮在施工荷载下的设计进行简单分析，为同类型大跨度预应力连续梁桥的挂篮施工提供一定的参考关键词：梁桥；连续箱梁；挂篮；静力试验；汽车动态试验ThePrestressedconcretecontinuousgirderbridgebelongstoakindofpre・stressBridges,bridgeoftheintegralstructure,goodperformance,stiffnessbigdeformationpropertysmall,seismicperformanceisg

3、ood.Especiallywithgirdersdeformationbucklinglinegently,decklessexpansionjoints,drivingcomfort,etc.Thispaperintroducestheapplicationofthistechnology.Long-spanprestressedconcretecontinuousboxgirderiswidelyusedforthecantileverconstructionhangingbasket.BecauseBelietrussbe

4、amwithdecomposition,canquicklyerectandassemblysimpleetc,andwereoftenusedasabridgecantileverconstructionofhangingbasketbearingstructure.MeanwhileBelietrusshangingbasketwithconstructingreasonable,thestructuralbehaviorisclear,respectthelighter,utilizationcoefficienttalbu

5、sesafetyisconvenientwaitforacharacteristic,moreimportantisitsengineeringlowcost.This,combinedwithchangedYuanShuistorehousesonalwaysoversizecontinuousgirderbridgeforthecantileverconstructionwithhangingbasketform,toBelietrusshangingbasketineonstructionunderthedesignofsi

6、mpleloadanalysisforthesametypeofalong・spanprestressedcontinuousgirderbridgeforhangingbasketconstructiontoprovidecertainrefereneeKeywords:girder,Thecontinuousbox-girder；Hangingbasket,Statictest；Vehicledynamictest目录摘耍关键词(2)引言2•拼装顺序2・1定义2.2过程2.3挂篮施工2.4梁段悬灌施工2.4.1施工流程242施

7、工要点2.4.3合拢施工2.4.3.1边跨合拢2.432中跨合拢2.4.3.3施工流程2.4.3.4施工要点3、挂篮拼装完成后进行预压荷载试验3.1静力实验及汽车活载实验3.1.1试验目的3.1.2试验加载装置3.1.3荷载与沉降的量测仪表3.1.4试验加载方式3.1.5加卸载与沉降观测3.1.6卸载与卸载沉降观测3.1.7试验报告内容及资料整理3.2全桥的动力特性实验3.3结构的口振频率的测试4结论参考文献：2TheKeywordstroduction(2)Assemblysequenee2.1Definition(2)proc

8、ess(2)guyedtravelers(2)beamsegmentsuspensionfillingconstructionIsagainst2.4.1constructionprocess2.constructionpoints2.others