钢板梁高强度螺栓连接部受力影响因素分析

发布时间：2018-12-18 16:30

【摘要】：在现代化交通运输业大发展的背景下，我国桥梁建设取得了举世瞩目的发展成就，桥梁设计建造水平得到巨大提升。国际间的交流与合作不断增强，尤其是与周边国家之间。二十一世纪，，在世界各地，桥梁等公路基础工程的建设投入仍将持续增加，新一轮跨江跨海桥梁建设高潮也正在展开，桥梁也将向着跨越能力更大，更经济合理，更美观的趋势发展。相较于水泥混凝土，钢材良好的结构性能使得钢桥更具有优势。高强度螺栓连接是钢结构连接的主要形式之一，其节点连接设计对结构安全起着重要的作用，且直接影响结构的安装和造价。日韩一直代表着亚洲桥梁建设中的较高水平，钢桥的发展也较早，为了促进我国桥梁事业与国际接轨，在本文中对中国和韩国两国的高强度螺栓的类型和材料特性进行介绍，并对中国《钢结构设计规范》（GB50017-2003）和韩国《道路桥设计基准》（2012）中有关高强度螺栓连接承载力计算的相关规定进行介绍和对比。列出了中韩两国常用桥梁用钢材并对材料特性进行介绍。对于高强度螺栓连接性能的分析，建立实体有限元模型进行研究，往往局限于对结构节点的模拟，难以应用到整体结构之中。本文使用ABAQUS有限元软件建立钢板梁高强度螺栓连接部的有限元模型，对实际结构中的高强度螺栓连接部进行模拟。分别改变不同位置连接板厚度、钢材强度等级、高强度螺栓等级和螺栓施加的预拉力，分析这些参数对结构受力的影响。
[Abstract]:Under the background of the great development of modern transportation and transportation, the bridge construction in our country has made remarkable achievements, and the level of bridge design and construction has been greatly improved. International exchanges and cooperation are increasing, especially with neighboring countries. In the 21 century, the investment in the construction of bridges and other highway infrastructure projects will continue to increase throughout the world, and a new wave of cross-river bridge construction is also under way, and the bridges will also be more economical and reasonable in terms of their crossing capacity. A more beautiful trend. Compared with cement concrete, steel bridge has more advantages because of its good structural performance. High strength bolt connection is one of the main forms of steel structure connection. The design of joint connection plays an important role in structural safety and directly affects the installation and cost of the structure. Japan and South Korea have always represented the higher level of bridge construction in Asia, and the development of steel bridges has been relatively early. In order to promote the bridge industry in China and the world, the types and material properties of high strength bolts in China and Korea are introduced in this paper. This paper also introduces and compares the relevant provisions concerning the bearing capacity calculation of high strength bolt connections in China's Code for Design of Steel structures (GB50017-2003) and Korea's Standard for Design of roads and Bridges (2012). The commonly used steel for bridges between China and South Korea is listed and the characteristics of materials are introduced. For the analysis of the performance of high strength bolt connection, the research of establishing solid finite element model is often limited to the simulation of structural joints, and it is difficult to be applied to the whole structure. In this paper, the finite element model of high strength bolt connection of steel plate beam is established by using ABAQUS finite element software, and the high strength bolt connection in practical structure is simulated. The influence of these parameters on the stress of the structure was analyzed by changing the thickness of the connecting plate in different positions, the strength grade of steel, the grade of high strength bolt and the pretensile force imposed by the bolt.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U441

【参考文献】