【土木】望高坡高架桥施工图纸设计

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编号:20171225092416539    类型:共享资源    大小:5.15MB    格式:RAR    上传时间:2017-12-25
  
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土木 高坡 高架桥 施工 图纸 设计
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折叠 【土木】望高坡高架桥施工图纸设计.rar【土木】望高坡高架桥施工图纸设计.rar
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摘要本设计的步骤为:根据设计任务要求,依据现行公路桥梁设计规范,综合考虑桥位的地质、地形条件,经初选后提出了预应力混凝土连续刚构、斜拉桥两种方案进行比选。按照“经济、适用、美观”等原则,比较了两个方案的优缺点。比选后最终把预应力混凝土连续刚构作为本次设计的主选方案,桥跨组成是70m+90m+90m+70m ,采用悬臂浇筑施工,整体性较好。进行了细部尺寸拟定、活载内力计算、配筋设计以及控制截面强度、应力验算、活载变形验算、施工图绘制等。经分析比较及验算表明该设计计算方法正确,内力分布合理,符合设计任务的要求。关键词:预应力混凝土连续刚构;斜拉桥;主推荐设计方案;结构分析;验算望高坡高架桥施工图纸设计2THE CONSDRACT DRAWING DESIGN OF THEBRIDGE OF WANGGAOPOABSTRACTThe process of designment:According to the design assignment and the presentHighway Bridge Specifications, Take the geological and the landform of the bridgesite for further analysis, after preliminary selection, two bridge type are presented,they are PC continuous rigid frame bridge and cable-stayed bridge.Comparing their characters comprehensively, the PC continuous rigid framebridge is selected as the main design scheme by the philosophy of bridge designas“Practicability, Economy, Security, Beauty”.The bridge in the text has a major spanof 120m and two side span of 70m, the concrete was bracket-in-place in theconstruction, so it is whole good.Through drawing up of structure’s dimension,internal force calculation of dead and living load,prestressed steel design, hypo forcecalculation, assessment of prestressing loss,checking computation of key sectionintension, stress, living load distortion and draw the project drawings .The conclusioncan be drawn that the design is up to the assignment.Key word: Design ; PC continuous rigid frame bridge ;cable-stayed bridge; themain design scheme for further analysis ; Structure analysis and checkingcomputation.望高坡高架桥施工图纸设计3目录1.概述............................................................52.此次毕业设计的意义所在..........................................93.设计原始资料与要求..............................................113.1课题内容.....................................................113.2课题任务要求.................................................114.方案比选........................................................134.1设计原始依据.................................................134.2方案一.......................................................134.3方案二.......................................................154.4方案三.......................................................174.5方案比选结果.................................................195.选定方案桥跨具体布置与结构尺寸拟定..............................205.1尺寸拟定.....................................................205.2桥孔分跨.....................................................205.3截面形式.....................................................205.4梁高.........................................................215.5细部上的一些尺寸.............................................225.6单元划分.....................................................235.7施工工艺.....................................................236.内力计算........................................................246.1一期恒载作用下主梁产生的内力.................................246.2二期恒载作用下主梁产生的内力.................................276.3温度变化产生的内力计算.......................................276.4支座沉降引起的内力计算.......................................286.5活荷载引起的内力计算.........................................29望高坡高架桥施工图纸设计46.6荷载组合.....................................................317.钢束估算及布置..................................................337.1预应力钢束的选择.............................................337.2预应力钢束的估算.............................................337.3预应力钢束的布置原则.........................................347.4预应力损失计算...............................................358.承载能力极限状态截面强度计算与验算..............................378.1 承载能力极限状态下正截面强度计算.............................378.2 承载能力极限状态下斜截面强度计算.............................389.抗裂验算.........................................................399.1 正截面抗裂验算...............................................399.2 斜截面抗裂验算...............................................4410.混凝土应力验算..................................................5010.1 混凝土应力验算..............................................5011.挠度验算........................................................6011.1 验算基本情况................................................6011.2 预拱度的计算................................................6112.参考文献........................................................6213.致谢............................................................63

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