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摘要该桥为张家港某开发区主要干道上的一座桥梁，桥梁跨越河塘，无通航要求。采用的是预应力简支梁空心板桥。它的主要特点：在垂直荷载的作用下，其支座仅产生垂直反力，而无水平推力。结构造型灵活，建筑高度小养护量小，经验丰富，国内水平先进，采用预制空心板构件，运至施工地点，采用混凝土现浇，将空心板连接，其特点外型简单、制造方便，整体性较好。为了完成整座桥的设计计算，必须把它分成上部结构计算及下部结构计算两个部分。在上部结构计算中，一共完成了作用效应计算、预应力钢筋的估算及布置、承载能力极限状态的计算、预应力损失计算、正常使用极限状态计算、变形计算持久、短暂状态应力验算等部分。并对其进行配筋并验算，对照规范后全部满足要求。在下部结构计算中，首先要确定桥墩、墩柱、钻孔桩尺寸，然后分别计算盖梁、墩柱、钻孔桩的内力。在此情况下对其进行配筋并验算，查规范后也都满足要求。通过本次的毕业设计，使我对桥梁工程的形成及起步初始阶段怎样利用所学的知识进行一个综合认识并对许多软件的操作得到了锻炼，为今后进入该行业打好良好的基础。50960
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毕业论文关键词 ：简支梁;预应力钢筋混凝土;钻孔桩;计算配筋 AbstractThis bridge's for Zhangjiagang some development zone main yang or male principleon bridge, bridge spanning river pond, non-navigation request. I used to is a prestressedconcrete simply supported hollow slab bridge. Its main characteristics：Under the action ofvertical load, the bearing only produce vertical reaction, and no horizontal force. Flexiblestructure sculpt, small building height maintenance quantity is little, experience,thedomestic advanced level,Using precast hollow slab artifacts, shipped to the constructionsite, adopting cast-in-place concrete, connect the hollow slab, its characteristic appearanceis simple and easy fabrication, good integrity.To complete the whole the design of the bridge, must put it into the upper structureand lower structure calculation of two parts.In the upper structure calculation,I finished thecalculation, the estimation of prestressed reinforcement effect and arrangement, calculationof bearing capacity limit state,loss of prestress calculation, calculation and deformationcalculation serviceability limit states of persistent and transient state stress check.Andcarries on the reinforcement and calculation, the comparison standard after all meet therequirements.In the lower structural calculation,must first determine the bridge pier, the pier, thesize of the drilled pile,then calculate capping beam, pier column, drilled pile internalforce,in this case and reinforcement calculation, after check specification are all meet therequirements.Through this graduation design, making me and start the initial stage in theformation of bridge engineering how to use learned knowledge for a comprehensiveunderstanding and operation of many software get exercise, wade for the future and lay agood foundation for entering the industry.
Keywords: simply supported beam; reinforced concrete structure;bored pile;thecalculation of reinforcement
目 目 目 目 录 录 录 录
第一章 第一章 第一章 第一章 绪论 绪论绪论 绪论 1
1.1 设计的资料1
1.1.1 主要的技术指标 1
1.1.2 材料的规格1
1.1.3 所采用的技术规范2
1.2 构造形式及尺寸选定2
1.2.1 桥梁总体的规划原则.2
1.2.2 方案的比选. 3
1.2.3 梁截面的形式 .5
1.2.4 桥墩的方案比选6
1.3 桥梁纵断面、横断面设计及平面布置.6
1.3.1 桥梁的纵断面设计6
1.3.2 桥梁的横断面设计7
1.3.3 桥梁的平面布置8
第二章 第二章 第二章 第二章 预应力混凝土空心板的设计 预应力混凝土空心板的设计 预应力混凝土空心板的设计 预应力混凝土空心板的设计. 9