波纹钢腹板组合箱梁桥剪力连接件的研究
发布时间：2018-09-09 16:41
【摘要】：波纹钢腹板组合箱梁桥是目前被世界各国所推广应用的一种组合梁桥。剪力连接件是组合梁设计的关键环节之一。PBL剪力连接件具有抗剪承载力大、疲劳寿命长、加工方便、经济适用等优点,从而得到了广泛地应用。目前对PBL剪力连接件的相关研究尚不成熟,尤其是对其承载力研究还处于探讨阶段。本文采用有限元法对PBL剪力连接件的受力性能进行了数值模拟。主要完成了以下工作： (1)综述了波纹钢腹板组合箱梁桥的发展及研究,概述了剪力连接件的研究现状及其存在的问题。提出本文的研究意义。 (2)论述了剪力连接件的基本理论,包括剪力连接件的力学性能、破坏形态、承载能力、设计方法等。介绍了国内外规范对剪力连接件的设计规定。 (3)用ANSYS有限元软件对PBL剪力连接件进行了非线性分析。分析了影响剪力连接件承载力的各种构造参数,针对有争议的钢板厚度及贯穿钢筋直径这两个参数的影响,给出了分析结论。 (4)对Twin-PBL剪力连接件进行了非线性有限元分析,研究了板肋中心距对Twin-PBL剪力连接件承载力的影响。对比分析有限元结果与试验公式结果。对PBL剪力连接件的设计提出了几点建议。
[Abstract]:Corrugated steel web composite box girder bridge is a kind of composite girder bridge which has been popularized and applied all over the world. The shear connectors are one of the key links in the design of composite beams. PBL shear connectors have many advantages, such as large shear capacity, long fatigue life, convenient processing and economical application. At present, the research of PBL shear joint is not mature, especially the research of its bearing capacity is still in the stage of discussion. In this paper, the finite element method is used to simulate the mechanical behavior of PBL shear joint. The main works are as follows: (1) the development and research of corrugated steel web composite box girder bridge are summarized. The research significance of this paper is put forward. (2) the basic theory of shear connectors is discussed, including the mechanical properties, failure form, bearing capacity, design method and so on. This paper introduces the design rules of shear joints in domestic and foreign codes. (3) nonlinear analysis of PBL shear connectors is carried out by using ANSYS finite element software. Various structural parameters affecting the bearing capacity of shear connectors are analyzed, aiming at the influence of the two parameters, the thickness of steel plate and the diameter of the perforated steel bar, The conclusion is given. (4) the nonlinear finite element analysis of Twin-PBL shear joint is carried out, and the influence of the center distance of plate rib on the bearing capacity of Twin-PBL shear joint is studied. The results of finite element method and experimental formula are compared and analyzed. Some suggestions on the design of PBL shear joint are put forward.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U441;U448.213
本文编号：2232981
[Abstract]:Corrugated steel web composite box girder bridge is a kind of composite girder bridge which has been popularized and applied all over the world. The shear connectors are one of the key links in the design of composite beams. PBL shear connectors have many advantages, such as large shear capacity, long fatigue life, convenient processing and economical application. At present, the research of PBL shear joint is not mature, especially the research of its bearing capacity is still in the stage of discussion. In this paper, the finite element method is used to simulate the mechanical behavior of PBL shear joint. The main works are as follows: (1) the development and research of corrugated steel web composite box girder bridge are summarized. The research significance of this paper is put forward. (2) the basic theory of shear connectors is discussed, including the mechanical properties, failure form, bearing capacity, design method and so on. This paper introduces the design rules of shear joints in domestic and foreign codes. (3) nonlinear analysis of PBL shear connectors is carried out by using ANSYS finite element software. Various structural parameters affecting the bearing capacity of shear connectors are analyzed, aiming at the influence of the two parameters, the thickness of steel plate and the diameter of the perforated steel bar, The conclusion is given. (4) the nonlinear finite element analysis of Twin-PBL shear joint is carried out, and the influence of the center distance of plate rib on the bearing capacity of Twin-PBL shear joint is studied. The results of finite element method and experimental formula are compared and analyzed. Some suggestions on the design of PBL shear joint are put forward.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U441;U448.213
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