基于载荷条件的钢板梁桥结构设计与制造工艺研究

发布时间：2019-05-29 17:47

【摘要】：随着桥梁钢结构技术的不断发展,有很多新形式的桥梁不断被发明。但是对于跨度较小、地理形式较复杂的地方,仍然要采用结构比较简单、制造比较经济的桥梁形式。钢板梁桥作为一种简单的桥梁结构,基本上可以满足所有地理形式的中小跨度桥梁需要。但是由于其简单的结构形式,国内外对其进行设计、制造方面的研究相对较少。对其进行载荷条件下力学性能分析和计算机仿真是目前此类型桥梁较为先进的研究方法。本文以国外的某钢板梁桥为研究背景,首先将其它类型的梁式桥与钢板梁桥做了对比,叙述了国内外此类型桥梁的研究现状以及存在的一些问题,并且分析了其结构形式与受力性能以及设计计算的基本理论。其次运用材料力学公式,以桥梁的前期测量数据、以及桥址处的地理特点为依据,根据实际载荷特点、受力形式,详细地对整个钢板梁桥的各个部分做了理论方面的计算。从而在理论上计算出钢板梁桥主要结构的尺寸,以及加劲肋板和附属结构等其他结构的具体布置位置。用计算机软件进行有限元受力分析是近几年桥梁钢结构发展的新方向。运用ANSYS软件建立了钢板梁桥的全桥模型,并且进行了在几种不同载荷工况条件下的静态、动态分析,检验了桥梁在各种实际载荷条件下极限承载能力。并且对其在载荷条件下位移量、各构件内力的分布情况进行了研究。从而找出由于载荷参数变化对板梁桥结构性能的影响规律,可以对其进行结构上的优化。最后对钢板梁桥的一些主要制造和加工工艺做了研究。对一些不合理的加工工序做了改进,其结果对此桥的制造工艺优化有很大的参考的价值。随着对钢板梁桥研究的不断深入,必定为桥梁的进一步实际应用提供相应的理论依据,从而产生更多的经济和社会价值。
[Abstract]:With the continuous development of bridge steel structure technology, many new forms of bridges have been invented. However, for the places with small span and complex geographical form, it is still necessary to adopt the bridge form which is relatively simple in structure and economical in manufacture. As a simple bridge structure, steel plate beam bridge can basically meet the needs of all geographical forms of small and medium-span bridges. However, due to its simple structure, there are relatively few researches on its design and manufacture at home and abroad. It is an advanced research method to analyze the mechanical properties and simulate the mechanical properties of this type of bridge under load. Based on the research background of a steel plate beam bridge abroad, this paper first compares other types of beam bridge with steel plate beam bridge, and describes the research status and some existing problems of this type of bridge at home and abroad. The structural form and mechanical properties, as well as the basic theory of design and calculation are analyzed. Secondly, based on the previous measurement data of the bridge and the geographical characteristics of the bridge site, according to the actual load characteristics and stress forms, the theoretical calculation of each part of the steel plate beam bridge is carried out in detail by using the material mechanics formula. Thus, the dimensions of the main structures of the steel plate beam bridge and the specific layout positions of other structures, such as stiffened ribbed plates and ancillary structures, are calculated theoretically. Finite element force analysis with computer software is a new direction of bridge steel structure development in recent years. The full bridge model of steel plate beam bridge is established by using ANSYS software, and the static and dynamic analysis under several different load conditions is carried out, and the ultimate bearing capacity of the bridge under various actual load conditions is tested. Under the load condition, the displacement and the internal force distribution of each component are studied. Thus, the influence of load parameters on the structural performance of plate-beam bridge can be found out, and the structural optimization can be carried out. Finally, some main manufacturing and processing technologies of steel plate beam bridge are studied. Some unreasonable processing procedures have been improved, and the results have great reference value for the optimization of the manufacturing process of the bridge. With the deepening of the research on steel plate beam bridge, it is bound to provide the corresponding theoretical basis for the further practical application of the bridge, so as to produce more economic and social value.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U448.36;U445.47

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