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1、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
2、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；midas60DesignofEzhouCityhomebridgeAbstractThecable-stayedbridge,cable-stayedbridgeandmeanonebyoneormoreofthemaintowerandwiretosupportthebridgedeck
3、.Isbythepressureofthetower,thetensionofcableandthecombinationofcurvedbeamelementisastructuralsystem.Itisconsideredtobealassoinsteadofpiersacrossmoreelasticsupportcontinuousbeam.Itcanreducebeambendingmomentinthebody,reducethebuildingheight,reducedtheweightofthestructure,savingmateri
4、als.Cable-stayedbridgeiscomposedoftowers,girdersandcables.Cable-stayedbridgeisoneofthemostpopularbridgelong-spanBridgesinourcountry.Sofarbuiltorunderconstructionofcable-stayedbridgewithatotalofmorethan30seats,secondonlytoGermany,Japan,andthethirdworld.Andthenumberoflong-spanconcret
5、ecable-stayedbridgehasbeenthefirstintheworld.ThisdesignforconsolidationofthetwintowersShuangSuoMianpier,towerandbeamprestressedconcretecable-stayedbridge,bridgechoosespecializedsoftwareVSESvisualstructurecalculationsoftwareformodelinganalysis,firstbyrigidsupportcontinuousLiangFacal
6、culationundertheactionofgravityintothebridgestateofcable,soastodesignthesectionsizeofcable,allcablesinstalled,one-timewholetensioninginplace,theneedforcableforceofthesecondadjustment.Toestablishtheoverallstructuremodel,thecalculationontheeffectsofgravity,car.Thentheeffectsofmaingir
7、der,andestimatetheprestressedreinforcement.KeyWords:Cable-stayedbridge；Structuredesign；Themaintower；Midas目录60摘要………………………………………………………………………………1Abstract………………………………………………………………………21绪论…………………………………………………………………………61.1引言…………………………………………………………………………61.1.1斜拉桥的概述……………………………………………………61.1.2斜
8、拉桥在国内外的应用…………………………………………6
