摘要随着我国社会的发展与进步和人民的生活水平的日益提高，交通的便利程度和安全性得到了人们的广泛关注，桥梁又是现代交通中不可缺少的组成部分，我国桥梁工程无论在建设规模上，还是在科技水平上，均已跻身世界先进行列。
本设计为S17线金昌至永昌高速公路河东庄大桥（两联4×25m预应力混凝土连续箱梁）下部结构设计，在设计过程中，参考了诸如桥梁工程、土力学、桥涵水文、材料力学、专业英语等相关书籍和文献，根据《公路桥涵设计手册》系列丛书，依照交通部颁发的有关公路桥涵设计规范（JTG系列）拟定设计而成。
设计中考虑了各种尺寸与材料的选用符合规范中对强度、应力、局部承压强度的要求，并且产生在规范容许范围内的变形，使桥梁在正常使用的情况下能够达到安全，稳定和耐久的标准。
在可预期偶然荷载下仍能达到基本正常使用的标准。
设计时还充分考虑河东庄大桥所处区域的地质和水文条件，既保证符合规范要求，同时保证因地制宜并且便于施工和维护，并且兼顾桥梁本身的美观性与社会经济性，既要设计合理，又要起到良好的社会经济效益。
关键词：河东庄大桥下部结构桥墩桥台美观性经济性AbstractWith the development and progress of our society and people's rising living standards, transportation convenience and safety to get the wide attention of people, the bridge is also an indispensable part of modern transportation, bridge works in China in terms of construction scale, or in the level of science and technology, have been among the advanced ranks in the world.The design for the S17line of Jinchang to Yongchang Expressway East Village Bridge ( double4 ×25m prestressed concrete continuous box girder ) substructure design, during the design process, the reference such as bridge engineering, soil mechanics, material mechanics, hydrology of bridge and culvert, English and other related books and literature, according to the" manual" design of highway bridges and culverts series, in accordance with the Ministry of Communications issued by the relevant design specifications for highway bridges and culverts ( JTG Series ) protocol is designed.Design consideration of senior high school entrance examination of various sizes and material selection in conformity with the specifications of strength, stress, local bearing strength requirements, and produced in standard allowable deformation of the bridge in the normal use, can achieve the safety, stability and durability of the standard. In the expected accidental loads can still achieve the basic normal use standard. The design also fully consider the Hedong Village Bridge where regional geological and hydrological conditions, both to ensure compliance with specifications, while ensuring that the suit one's measures to local conditions and easy construction and maintenance, and take into account the bridge itself appearance and social economy should not only reasonable design, but also has good social and economic benefits.Key words: He dong zhuang bridge Substructure pier abutment beauty economy目录第一章绪论 (3)第二章设计资料及方案比选 (4)第一节设计资料 (4)1 技术设计标准 (4)2 主要设计依据 (4)3 工程地质资料 (4)第二节墩台比选 (4)1 桥墩比选 (4)2 比选结果 (5)3 桥台比选 (5)4 比选结果 (5)第三章桥墩设计计算 (6)第一节桥墩材料及尺寸 (6)1 材料 (6)2 桥墩尺寸 (6)第二节盖梁计算 (6)1 荷载计算 (6)2 可变荷载计算 (8)4 内力计算 (12)5 截面配筋设计与承载力核算 (15)第三节桥墩墩柱计算 (17)1 恒载计算: (17)2 汽车荷载计算 (17)3 荷载组合 (18)4 截面配筋计算及应力验算 (19)第四节钻孔灌注桩的设计计算 (22)1 荷载计算 (22)2 桩长计算 (24)3 桩的内力计算（m法） (24)4 桩身截面配筋与承载力验算： (26)5 墩顶纵向水平位移验算 (28)第四章桥台设计 ................................................................................................ 错误!未定义书签。
第一节桥台材料及尺寸 ............................................................................ 错误!未定义书签。
1 桥台类型和主要材料 ...................................................................... 错误!未定义书签。
2 桥台尺寸 .......................................................................................... 错误!未定义书签。
第二节台帽计算 ........................................................................................ 错误!未定义书签。
1 荷载计算 .......................................................................................... 错误!未定义书签。
2 内力计算 .......................................................................................... 错误!未定义书签。
1 垂直荷载计算 .................................................................................. 错误!未定义书签。
2 恒载对台墙各截面所产生的弯矩................................................... 错误!未定义书签。
3 活载对台墙产生的反力 .................................................................. 错误!未定义书签。
4 活载对各截面所产生的弯矩 .......................................................... 错误!未定义书签。
第五章结论与展望 ............................................................................................ 错误!未定义书签。
1 结论 .......................................................................................................... 错误!未定义书签。
2 展望 .......................................................................................................... 错误!未定义书签。
附录英文文献翻译 ............................................................................................ 错误!未定义书签。
第一章绪论随着我国社会的发展与进步和人民的生活水平的日益提高，交通的便利程度和安全性得到了人们的广泛关注，桥梁又是现代交通中不可缺少的组成部分，于此同时，桥梁建设得到了迅猛发展，我国桥梁工程无论在建设规模上，还是在科技水平上，均已跻身世界先进行列。