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20m预应力混凝土简支箱形梁桥设计

日期：2025-12-22 文件格式：doc 浏览：0 评论：0

摘要：河溪梁桥设计为20 的预应力混凝土简支箱形梁桥。该桥采用双车道布置。上部为装配式部分预应力混凝土简支箱梁。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。下部桥墩为钢筋混凝土圆形双柱式墩；桥墩基础为单排双列钻孔灌注桩基础。桥墩盖梁为连续墩盖梁，按简支梁计算盖梁内力及墩柱顶竖向反力。桩基采用为单排桩形式。

关键词：箱梁；后张法；预应力混凝土

The design of the HeXi bridge

Author:XXX

(XXX, 611830)

Instructor: XXX

Abstract:The program of Hexi design for 20m pre-stressed concrete free supported box girder bridge. This bridge has Two driveway. The upside of bridge is the type of assembly partial prestressed reinforcement concrete simple underprop box girder.In order to reduce the girder’s tallness, reduce the superior camber which the pre-stressed causes, the post tenioning pre-stressed concrete box girder under the designed load is designed according to the partical pre-stressed concrete A member, the girder adopt the mixed complex of the pre-stressed reinforcing steel bar and the non-pre-stressed reinforcing steel bar. The pier of the bridge’s Infrastructure is the reinforced concrete circular distyle pillar; Pier’s bedrock for single line double row drill hole irrigation pile foundation. Bridge pier plate girder is continual pier plate girder which calculates plate pier’s internal force and the pier’s top vertical force according to the simple beam. Pile foundation use the single piling form.

Keywords: Box girder; Post tensioning concrete; Prestressed concrete

摘要：河溪梁桥设计为20的预应力混凝土简支箱形梁桥。该桥采用双车道布置。上部为装配式部分预应力混凝土简支箱梁。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。下部桥墩为钢筋混凝土圆形双柱式墩；桥墩基础为单排双列钻孔灌注桩基础。桥墩盖梁为连续墩盖梁，按简支梁计算盖梁内力及墩柱顶竖向反力。桩基采用为单排桩形式。
关键词：箱梁；后张法；预应力混凝土
ThedesignoftheHeXibridge
Author:XXX
(XXX,611830)
Instructor:XXX
Abstract:Theprogramof Hexi designfor20mpre-stressedconcretefreesupportedboxgirderbridge.ThisbridgehasTwodriveway.Theupsideofbridgeisthetypeofassemblypartialprestressedreinforcementconcretesimpleunderpropboxgirder.Inordertoreducethegirder’stallness,reducethesuperiorcamberwhichthepre-stressedcauses,theposttenioningpre-stressedconcreteboxgirderunderthedesignedloadisdesignedaccordingtotheparticalpre-stressedconcreteAmember,thegirderadoptthemixedcomplexofthepre-stressedreinforcingsteelbarandthenon-pre-stressedreinforcingsteelbar.Thepierofthebridge’sInfrastructureisthereinforcedconcretecirculardistylepillar;Pier’sbedrockforsinglelinedoublerowdrillholeirrigationpilefoundation.Bridgepierplategirderiscontinualpierplategirderwhichcalculatesplatepier’sinternalforceandthepier’stopverticalforceaccordingtothesimplebeam.Pilefoundationusethesinglepilingform.
Keywords: Boxgirder; Posttensioningconcrete; Prestressedconcrete

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