钢筋混凝土宽箱梁桥的纵横向力学性能的研究-建筑与土木工程专业论文.docxVIP

Research of Vertical and horizontal mechanical properties of reinforced concrete broad box grider ABSTRACT The reinforced concrete broad box girder has many advantages and has been used for bridge construction widely. International academia and engineers has paid great attention to the research on the mechanical properties of box girder. On the basis of part of Hezuohua South Road Viaduct under construction in Hefei, the paper discusses and analyzes the longitudinal and transverse calculation/designing process of the bridge.The paper introduces the basic theory of finite-element method and grillage method. Plane and space beam element models and grillage finite element model has been modeled with Doctor Bridge and Midas. By comparing the calculation results of the models, some conclusion has been reached according to the longitudinal stress of the bridge and the internal force of the middle diaphragm. The paper put forward an improved method over the simplified lateral calculation of box girder using the grillage method, which is more suitable to the actual state. This new method provides an alternative for similar projects and thus is of practical use in future. Key Words: broad box grider; grillage method; transverse calculation 致 谢 本文是在我的导师杨成斌教授悉心指导下完成的。 首先我要感谢杨成斌教授两年多来对我的辛勤教育和培养。在读研期间，杨老师扎 实深厚的理论知识，严谨求实的治学态度，精益求精的敬业精神，诲人不倦的良好风范， 值得我终生学习，不论是在学习上还是在生活上，杨老师都给了我极大的关心和帮助， 为我们创造了良好的学习环境与氛围。在我撰写毕业论文的过程中，杨老师多次询问我 的论文进度，对我在论文撰写过程中碰到的问题给予了耐心细致的解答，帮助我开拓研 究思路，使我的论文撰写更加顺利，导师对于学术问题的严谨求实的态度给我留下了深 刻的印象。在这两年多的学习生活中，我不但从杨老师那里学到了专业知识，而且还跟 杨老师学到了很多待人接物的哲理，这些都让我受益终身。从论文的选题，文献的阅读、 结构的计算分析及论文的撰写、修改各个阶段，无不凝聚了导师的汗水和心血，在此， 我对杨老师表示深深的感谢。 我还要对我的任课老师牛忠荣教授、杨树萍教授和盛宏玉教授至以衷心的感谢和诚 挚的敬意。同时，我还要感谢张大超、李金华、李自祥、卢元刚、马乾、于景操、徐新 科等同学在学习和生活上的帮助。 最后，我要感谢父母的养育之恩，他们勤劳朴素的作风、诚实善良的品德，是我一 生的榜样。 目 录 HYPERLINK \l _bookmark0 第一章 绪 论 1 HYPERLINK \l _bookmark1 1.1 宽箱梁桥的定义 1 HYPERLINK \l _bookmark4 1.2 宽箱梁优点及其受力特性 2 HYPERLINK \l _bookmark5 1.2.1 宽箱梁优点 2 HYPERLINK \l _bookmark6 1.2.2 宽箱梁受力特性 3 HYPERLINK \l _b