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桥梁设计计算说明书毕业论文.doc

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桥梁设计计算说明书毕业论文.doc

黑龙江工程学院本科毕业设计目录摘要........................................................................................................................................IAbstract...............................................................................................................................Ⅱ第1章绪论.......................................................................................................................11.1选题的目的及意义..................................................................................................11.1.1国内外研究状况..........................................................................................11.1.2工程概况......................................................................................................11.2技术资料.................................................................................................................21.2.1桥面净空......................................................................................................21.2.2设计荷载......................................................................................................21.2.3设计水位......................................................................................................21.2.4计算要求......................................................................................................21.3结构形式.................................................................................................................21.4主要材料.................................................................................................................21.5上部结构说明书.....................................................................................................31.5.1技术标准和技术规范..................................................................................31.5.2技术标准......................................................................................................31.5.3设计要求......................................................................................................31.5.4施工工艺......................................................................................................31.6下部结构说明书.....................................................................................................31.6.1各部分尺寸见墩台一般构造图..................................................................31.6.2质量标准......................................................................................................31.6.3施工注意事项..............................................................................................4第2章水文计算..............................................................................................................52.1计算设计洪水流量.................................................................................................52.2桥长的计算.............................................................................................................52.2.1桥孔净长度..................................................................................................52.2.2河床桥孔布设..............................................................................................62.2.3桥面最低高程计算......................................................................................6黑龙江工程学院本科毕业设计2.3冲刷计算.................................................................................................................62.3.1一般冲刷后水深..........................................................................................62.3.2桥墩局部冲刷深度......................................................................................72.3.3桥墩的最低冲刷线高程..............................................................................72.4本章小结.................................................................................................................7第3章上部结构设计.....................................................................................................93.1尺寸拟定.................................................................................................................93.1.1主梁间距与主梁片数..................................................................................93.1.2主梁高度......................................................................................................93.1.3主梁截面细部尺寸......................................................................................93.1.4计算截面几何特性....................................................................................103.1.5横截面布置................................................................................................123.1.6横截面沿跨长的变化................................................................................133.1.7横隔梁的设置............................................................................................133.2主梁内力计算.......................................................................................................133.2.1恒载内力计算............................................................................................143.2.2活载内力计算...........................................................................................173.2.3计算活载内力............................................................................................243.2.4主梁内力组合............................................................................................383.3预应力钢筋数量的确定和布置...........................................................................403.3.1估算预应力钢筋数量的确定和布置........................................................403.3.2估算普通钢筋数量的确定和布置............................................................413.4截面几何性质计算...............................................................................................443.5承载能力极限状态计算.......................................................................................513.5.1斜截面抗剪承载力计算............................................................................513.5.2距支点h/2截面抗剪承载力验算.............................................................513.5.3变截面点处抗剪承载力验算....................................................................523.6预应力损失计算...................................................................................................543.6.1摩阻损失....................................................................................................543.6.2锚具变形损失............................................................................................553.6.3分批张拉损失............................................................................................563.6.4第一批预应力损失汇总............................................................................60黑龙江工程学院本科毕业设计3.6.5钢筋应力松弛损失....................................................................................603.6.6混凝土收缩、徐变损失............................................................................613.7正常使用极限状态...............................................................................................623.7.1正截面抗裂性验算....................................................................................623.7.2斜截面抗裂性验算....................................................................................633.8持久状况应力验算...............................................................................................673.8.1跨中截面混凝土法向正应力验算............................................................673.8.2斜截面主应力验算....................................................................................673.9短暂状态应力验算...............................................................................................693.9.1上缘混凝土应力........................................................................................693.9.2下缘混凝土应力........................................................................................703.10本章小结.............................................................................................................70第4章下部结构设计...................................................................................................714.1高程计算...............................................................................................................714.2尺寸拟定...............................................................................................................714.2.1桥台尺寸拟定............................................................................................714.3承载力验算...........................................................................................................744.4桩长计算...............................................................................................................824.4.1桥墩桩长计算...........................................................................................834.4.2桥台台高及桥台下钻孔灌注桩桩长计算................................................854.5本章小结...............................................................................................................87第5章施工方法设计...................................................................................................885.1预应力混凝土梁的预制.......................................................................................885.1.1模板............................................................................................................885.1.2预应力钢筋的置备....................................................................................885.1.3预应力钢筋的张拉....................................................................................885.1.4孔道压浆....................................................................................................885.2预应力混凝土梁的安装.......................................................................................885.3桩基础的施工.......................................................................................................895.3.1准备工作....................................................................................................895.3.2钻孔............................................................................................................905.3.3清孔、吊装钢筋骨架、验孔....................................................................90黑龙江工程学院本科毕业设计5.3.4灌注水下混凝土........................................................................................905.4桥墩桥台施工.......................................................................................................905.4.1施工前期准备............................................................................................905.4.2施工过程及要点........................................................................................905.5本章小结...............................................................................................................90结论......................................................................................................................................92参考文献............................................................................................................................93致谢......................................................................................................................................94

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