中低速磁浮轨道梁关键技术研究
发布时间：2018-08-18 16:07
【摘要】：磁浮交通依靠自身环保、节能、高效等诸多优点已成为21世纪最具竞争力的绿色地面交通系统之一。中低速磁浮列车由于其优良的技术经济特性,特别适用于城市客流中等的快速延伸线,诸如市区与机场、郊区、产业区、旅游景区等联系的专用快速线路,也适用于地形地貌复杂、建筑物拥挤的大中城市的交通线路,是未来城市轨道交通的重要选择之一。 近几年来,我国自主研发的中低速磁浮技术开始走向工程化,磁悬浮线路多采用封闭式高架桥梁,但目前国内仍没有关于中低速磁浮交通的设计规范,因而对中低速磁浮轨道梁关键技术进行研究是很有必要的。本文结合株洲中低速磁浮试运线轨道梁,采用试验研究与计算分析相结合的方法,进行了以下研究： 1、广泛收集了相关资料,介绍了国内外磁浮交通以及磁浮轨道梁的发展概况。 2、对各国规范的轨道梁刚度限值进行了比较分析,进行了6种工况下中低速磁浮轨道梁刚度试验,脉动激励方式下轨道梁频率、振型试验研究,验证了中低速磁浮试运线轨道梁刚度取值的合理性。 3、结合中低速磁浮轨道梁,测试了行车动态响应。根据测试及数值分析计算结果,验证了中低速磁浮轨道梁动力系数取值的合理性。 4、基于目前典型磁浮轨道梁截面,采用有限元程序对不同截面、不同跨度磁浮轨道梁刚度及动力特性进行了分析比较,根据计算结果提出了中低速磁浮轨道梁动力系数与基频比关系。
[Abstract]:Maglev traffic has become one of the most competitive green ground transportation systems in the 21st century. Due to its excellent technical and economic characteristics, the medium and low speed maglev trains are especially suitable for the rapid extension lines with medium passenger flow in urban areas, such as special express lines connecting urban areas with airports, suburbs, industrial districts, tourist attractions, etc. It is also suitable for the traffic routes of large and medium cities with complex landforms and congested buildings, which is one of the important choices of urban rail transit in the future. In recent years, the medium and low speed maglev technology developed independently in our country has begun to become engineering. Most magnetic levitation lines use closed elevated bridges, but at present there is still no design specification for medium and low speed maglev traffic in China. Therefore, it is necessary to study the key technology of middle and low speed maglev track beam. Combined with the track beam of Zhuzhou medium and low speed maglev test line, the following research is carried out by combining experimental research with calculation and analysis: 1. The relevant data are collected extensively. This paper introduces the development of maglev traffic and maglev track beam at home and abroad. 2. The stiffness limit values of track beam are compared and analyzed in various countries, and the stiffness tests of middle and low speed maglev track beam under 6 kinds of working conditions are carried out. The experimental study on the frequency and mode of track beam under pulsating excitation mode verifies the rationality of the stiffness of track beam in the test line of medium and low speed maglev. 3. Combined with the medium and low speed maglev track beam, the dynamic response of driving is tested. According to the results of test and numerical analysis, the rationality of choosing the dynamic coefficient of middle and low speed maglev track beam is verified. 4. Based on the typical section of maglev track beam at present, the finite element program is used to analyze the different sections. The stiffness and dynamic characteristics of different span maglev track beams are analyzed and compared. Based on the calculation results, the relationship between the dynamic coefficient and the fundamental frequency ratio of the middle and low speed maglev track beams is proposed.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U237;U213.2;U448.13
本文编号：2189983
[Abstract]:Maglev traffic has become one of the most competitive green ground transportation systems in the 21st century. Due to its excellent technical and economic characteristics, the medium and low speed maglev trains are especially suitable for the rapid extension lines with medium passenger flow in urban areas, such as special express lines connecting urban areas with airports, suburbs, industrial districts, tourist attractions, etc. It is also suitable for the traffic routes of large and medium cities with complex landforms and congested buildings, which is one of the important choices of urban rail transit in the future. In recent years, the medium and low speed maglev technology developed independently in our country has begun to become engineering. Most magnetic levitation lines use closed elevated bridges, but at present there is still no design specification for medium and low speed maglev traffic in China. Therefore, it is necessary to study the key technology of middle and low speed maglev track beam. Combined with the track beam of Zhuzhou medium and low speed maglev test line, the following research is carried out by combining experimental research with calculation and analysis: 1. The relevant data are collected extensively. This paper introduces the development of maglev traffic and maglev track beam at home and abroad. 2. The stiffness limit values of track beam are compared and analyzed in various countries, and the stiffness tests of middle and low speed maglev track beam under 6 kinds of working conditions are carried out. The experimental study on the frequency and mode of track beam under pulsating excitation mode verifies the rationality of the stiffness of track beam in the test line of medium and low speed maglev. 3. Combined with the medium and low speed maglev track beam, the dynamic response of driving is tested. According to the results of test and numerical analysis, the rationality of choosing the dynamic coefficient of middle and low speed maglev track beam is verified. 4. Based on the typical section of maglev track beam at present, the finite element program is used to analyze the different sections. The stiffness and dynamic characteristics of different span maglev track beams are analyzed and compared. Based on the calculation results, the relationship between the dynamic coefficient and the fundamental frequency ratio of the middle and low speed maglev track beams is proposed.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U237;U213.2;U448.13
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