走马滩大桥—杨雯修改版本

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1、走马滩大桥设计摘要走马滩大桥初步设计为20的预应力混凝土简支箱形梁桥。该桥采用两车道布置。上部为预应力混凝土简支箱梁。预制箱梁高1.2，主梁间距2.9。为降低主梁高度，减少预应力引起的上拱度，后张法预应力混凝土箱梁在设计荷载下按部分预应力混凝土A类构件设计，主梁配筋采用预应力筋和非预应力筋混合配筋。锚具采用OVM15—5型锚具，锚具变形钢筋回缩按4计。预制件在张拉钢绞线时混凝土的强度应达到85%以上方可张拉。下部桥墩为钢筋混凝土圆形双柱式墩，墩柱直径1.2；桥墩基础为单排双列钻孔灌注桩基础，桩径1.4。桥墩盖梁为连续墩盖梁，按简支梁计

2、算盖梁内力及墩柱顶竖向反力。桩基采用为单排桩形式，间距6.7。矚慫润厲钐瘗睞枥庑赖。关键词下部结构；后张法；锚固；预应力混凝土Cook'sBeachBigBridgeDesignAbstractTheprogramofBigBridgefromCook’sBeachpreliminarydesignfor20mpre-stressedconcretefreesupportedboxgirderbridge.ThisbridgehasTwodriveway.Theupsideofbridgeisthetypeofprestressedr

3、einforcementconcretesimpleunderpropboxgirder.Prefabricatingboxgirderhasthetallnessof1.2m,thegirder’sspanlengthis2.90m.Inordertoreducethegirder’stallness,reducethesuperiorcamberwhichthepre-stressedcauses,theposttenioningpre-stressedconcreteboxgirderunderthedesignedloadis

4、designedaccordingtotheparticalpre-stressedconcreteAmember,thegirderadoptthemixedcomplexofthepre-stressedreinforcingsteelbarandthenon-pre-stressedreinforcingsteelbar.TheanchorageusestheOVM15-5anchorage,theanchorage’sdistortionandreinforcingsteelbar’sshrinkageisaccordingt

5、othelengthof4㎜.Pre-workpiecewhenpullthesteelwringwire,thereinforcingsteelbarcanbetensionuntiltheconcretetensiveintensityshouldonlyachieveabove85%.Thepierofthebridge’sInfrastructureisthereinforcedconcretecirculardistylepillar,footstall’sdiameteris1.2m;Pier’sbedrockforsin

6、glelinedoublerowdrillholeirrigationpilefoundation,stake’sdiameteris1.4m.Bridgepierplategirderiscontinualpierplategirderwhichcalculatesplatepier’sinternalforceandthepier’stopverticalforceaccordingtothesimplebeam.Pilefoundationusethesinglepilingform,span6.7m.聞創沟燴鐺險爱氇谴净。Ke

7、ywordsSubstructure；Posttensioningconcrete；Anchorage；Prestressedconcrete残骛楼諍锩瀨濟溆塹籟。目录1概述……………………………………………………………………………………………11.1选题依据………………………………………………………………………………11.1.1设计目的及设计的主要内容…………………………………………………11.1.2设计拟应用的现场资料综述…………………………………………………11.1.3设计拟应用的文献综述……………………………………………………

8、…11.1.4设计相关技术的国内外现状…………………………………………………11.2研究（设计）思路……………………………………………………………………21.3研究（设计）内容…………………………………………………………