45m 60m 45m三跨连续梁桥设计
摘 要
本次毕业设计内容为45m 60m 45m三跨连续梁桥设计，结合本桥特点及相关文献和书籍的查阅，针对预应力混凝土连续梁桥的发展概况、结构特点、施工方法和简要的计算方法等内容写下此文献综述。
从国内外已建成的钢桥、钢筋混凝土连续梁桥及预应力混凝土连续梁桥的数量来看，预应力混凝土连续梁桥已经远超半数，预应力混凝土连续梁凭借自身的优点在国内外都有着很强的竞争力。预应力混凝土连续梁桥在施工过程中常常会出现体系转换，因此在施工过程中的应力和变形在结构设计中需要考虑。不同的施工方法，在施工各阶段的内力也不同，有时结构的控制内力出现在施工阶段。所以，对于连续梁桥，设计和施工是不可分开的，结构的设计必须考虑到施工方法、施工内力和变形；施工方法的选择也应当与设计要求相匹配，形成设计与施工相互制约、相互配合的关系。
关键词：预应力混凝土连续梁桥；结构特点；施工方法；设计计算。
45m 60m 45m three-span continuous beam bridge
ABSTACT
The graduation project is 45m 60m 45m three-span continuous beam bridge. Combining with the characteristics of this bridge and related literature and books, the author writes down the literature review by summarizing the development of the prestressed concrete continuous beam bridge, structural features, construction methods and brief calculation methods .
From the number of the steel bridges, the reinforced concrete continuous beam bridges and the prestressed concrete continuous beam bridges has been built in China and abroad, the prestressed concrete continuous beam bridges have been far more than half of the total. Based on the advantages of prestressed concrete continuous beam bridge has a very strong competitiveness both in China and abroad. During the construction process, the prestressed concrete continuous beam bridge often has a system transformation, so the stress and deformation in the construction process need to be considered in the structural design. Different construction methods have different internal forces at each stage of construction,and sometimes structural control of internal forces appears in the construction stage. Therefore, for continuous beam bridge, the design and construction are inseparable, and the design of the structure must consider the construction method , internal forces and deformation during construction ; the selection of construction method should also be matched with the design requirements to form the relationship between design and construction.
以上是毕业论文文献综述，课题毕业论文、任务书、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。
