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1、武汉科技大学城市学院毕业设计(论文)鄂州市方家园桥设计摘要斜拉桥,又称斜张桥,是指一种由一条或多主塔与钢缆组成来支撑桥面的桥梁。是由承压的塔,受拉的索和承弯的梁体组合起来的一种结构体系。其可看作是拉索代替支墩的多跨弹性支承连续梁。其可使梁体内弯矩减小,降低建筑高度,减轻了结构重量,节省了材料。斜拉桥由索塔、主梁、斜拉索组成。斜拉桥是我国大跨径桥梁最流行的桥型之一。目前为止建成或正在施工的斜拉桥共有30余座,仅次于德国、日本,而居世界第三位。而大跨径混凝土斜拉桥的数量已居世界第一。本设计为墩、塔、梁固结
2、的双塔双索面预应力混凝土斜拉桥,选择桥梁专用软件Madis可视化结构计算软件来建模分析,先采用刚性支承连续梁法计算在自重作用下成桥状态斜拉索的受力,从而设计出拉索的截面尺寸,斜拉索全部安装后,一次性整体张拉到位,无需进行索力的二次调整。进而建立整体结构模型,计算该桥在自重、汽车的作用效应。然后进行主梁的作用效应组合,并估算预应力筋。关键词:斜拉桥;结构设计;主塔;midas59武汉科技大学城市学院毕业设计(论文)DesignofEzhouCityhomebridgeAbstractThecable-s
3、tayedbridge,cable-stayedbridgeandmeanonebyoneormoreofthemaintowerandwiretosupportthebridgedeck.Isbythepressureofthetower,thetensionofcableandthecombinationofcurvedbeamelementisastructuralsystem.Itisconsideredtobealassoinsteadofpiersacrossmoreelasticsupp
4、ortcontinuousbeam.Itcanreducebeambendingmomentinthebody,reducethebuildingheight,reducedtheweightofthestructure,savingmaterials.Cable-stayedbridgeiscomposedoftowers,girdersandcables.Cable-stayedbridgeisoneofthemostpopularbridgelong-spanBridgesinourcountr
5、y.Sofarbuiltorunderconstructionofcable-stayedbridgewithatotalofmorethan30seats,secondonlytoGermany,Japan,andthethirdworld.Andthenumberoflong-spanconcretecable-stayedbridgehasbeenthefirstintheworld.ThisdesignforconsolidationofthetwintowersShuangSuoMianpi
6、er,towerandbeamprestressedconcretecable-stayedbridge,bridgechoosespecializedsoftwareVSESvisualstructurecalculationsoftwareformodelinganalysis,firstbyrigidsupportcontinuousLiangFacalculationundertheactionofgravityintothebridgestateofcable,soastodesignthe
7、sectionsizeofcable,allcablesinstalled,one-timewholetensioninginplace,theneedforcableforceofthesecondadjustment.Toestablishtheoverallstructuremodel,thecalculationontheeffectsofgravity,car.Thentheeffectsofmaingirder,andestimatetheprestressedreinforcement.
8、KeyWords:Cable-stayedbridge;Structuredesign;Themaintower;Midas目录59武汉科技大学城市学院毕业设计(论文)摘要………………………………………………………………………………1Abstract………………………………………………………………………21绪论…………………………………………………………………………61.1引言…………………………………………………………………………61.1.1斜拉桥的概