波形钢腹板组合箱梁桥抗剪屈曲研究
发布时间：2019-01-24 20:10
【摘要】：波形钢腹板混凝土桥因经济、自重轻、施工周期短、美观等优势在许多发达国家研究和应用相对较成熟，近年来在我国不断应用并呈现出强劲发展势头。作为一种新型的桥梁结构形式，结合了波形钢腹板和混凝土的特点，其结构形式逐步向变截面大跨径扩展。 钢腹板在波形钢腹板箱梁桥中承受剪力，其抗剪承载力由截面的屈曲强度控制。本文在总结已建桥梁的基础上，建立波形钢腹板箱梁桥ansys有限元模型。并在不同因素下分析其对钢腹板承载力的影响。这些因素包括波形钢腹板厚度、直板段长度、梁高、波高、斜板倾角。结果显示：①提高波形钢腹板厚度可以显著提高其抗剪承载力。②改变直板段长度对波形钢腹板的抗剪承载力影响较小，，但是直板段长度过大容易造成其局部屈曲破坏，长度应小于440mm。③加大斜板倾角可以明显提高钢腹板的抗剪承载力。 本文还对波形钢腹板的抗剪连接键进行了归纳，总结不同类型的连接件的破坏机理及抗剪承载力以及国内外的经验公式。 希望通过本文的研究，能为桥梁设计提供技术上的参考。
[Abstract]:The corrugated steel web concrete bridge is relatively mature in many developed countries because of its advantages such as economy, light weight, short construction period and beautiful appearance. In recent years, it has been continuously applied in China and has shown a strong development momentum. As a new type of bridge structure, with the characteristics of corrugated steel web and concrete, the structural form is gradually extended to the long span with variable cross section. Steel web is subjected to shear force in corrugated steel web box girder bridge, and its shear capacity is controlled by the buckling strength of section. In this paper, the ansys finite element model of corrugated steel web box girder bridge is established on the basis of the existing bridge. The influence of different factors on the bearing capacity of steel web was analyzed. These factors include the thickness of corrugated steel web, length of straight plate, beam height, wave height and inclined angle of inclined plate. The results show that: 1 increasing the thickness of corrugated steel web can significantly improve the shear capacity of corrugated steel web. (2) changing the length of straight plate has little effect on the shear capacity of corrugated steel web, but the length of straight plate is easy to cause local buckling failure. The shear capacity of steel web can be improved obviously when the length should be smaller than 440mm.3 and the inclined angle of inclined plate is increased. In this paper, the shear bond of corrugated steel web is summarized, and the failure mechanism, shear bearing capacity and experience formula of different types of joints are summarized. Through the research of this paper, we hope to provide a technical reference for bridge design.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.213
本文编号：2414807
[Abstract]:The corrugated steel web concrete bridge is relatively mature in many developed countries because of its advantages such as economy, light weight, short construction period and beautiful appearance. In recent years, it has been continuously applied in China and has shown a strong development momentum. As a new type of bridge structure, with the characteristics of corrugated steel web and concrete, the structural form is gradually extended to the long span with variable cross section. Steel web is subjected to shear force in corrugated steel web box girder bridge, and its shear capacity is controlled by the buckling strength of section. In this paper, the ansys finite element model of corrugated steel web box girder bridge is established on the basis of the existing bridge. The influence of different factors on the bearing capacity of steel web was analyzed. These factors include the thickness of corrugated steel web, length of straight plate, beam height, wave height and inclined angle of inclined plate. The results show that: 1 increasing the thickness of corrugated steel web can significantly improve the shear capacity of corrugated steel web. (2) changing the length of straight plate has little effect on the shear capacity of corrugated steel web, but the length of straight plate is easy to cause local buckling failure. The shear capacity of steel web can be improved obviously when the length should be smaller than 440mm.3 and the inclined angle of inclined plate is increased. In this paper, the shear bond of corrugated steel web is summarized, and the failure mechanism, shear bearing capacity and experience formula of different types of joints are summarized. Through the research of this paper, we hope to provide a technical reference for bridge design.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.213
【参考文献】
相关期刊论文 前10条
1 李淑琴;陈建兵;万水;陈华利;;我国几座波形钢腹板PC组合箱梁桥的设计与建造[J];工程力学;2009年S1期
2 陈宝春,黄卿维;波形钢腹板PC箱梁桥应用综述[J];公路;2005年07期
3 宋建永,任红伟,聂建国;波纹钢腹板剪切屈曲影响因素分析[J];公路交通科技;2005年11期
4 任红伟;陈海波;宋建永;;波纹钢腹板预应力组合箱梁桥的设计计算分析[J];公路交通科技;2008年08期
5 陆海峰,万水;波形钢腹板预应力混凝土组合箱梁的结构设计[J];华东公路;2003年03期
6 万水,陈建兵,袁安华,喻文兵;波形钢腹板PC组合箱梁简化计算及试验研究[J];华东交通大学学报;2005年01期
7 李明元;;泼河大桥的施工与动力特性试验研究[J];交通标准化;2006年04期
8 李超;陆孝如;万水;余晓红;;泼河大桥的波形钢腹板PC箱梁的构造与施工[J];黑龙江工程学院学报;2006年02期
9 李时,郭彦林;波折腹板梁抗剪性能研究[J];建筑结构学报;2001年06期
10 李宏江,叶见曙,万水,吴文清;波形腹板箱梁的扭转与畸变分析及试验研究[J];桥梁建设;2003年06期
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