考虑列车纵向作用的高架车站动力分析

发布时间：2018-06-06 19:32

本文选题：车桥耦合 + 高架车站　；参考：《北京交通大学》2014年博士论文

【摘要】：摘要：随着国民经济日益增长的需求,铁路建设得到了快速发展,其中车站的建设规模越来越大,高架车站这种立体化的结构形式也得到越来越多的采用,在交通的高效组织和城市建设中扮演重要的角色。与此同时,这种新型的车站结构也会带来一些新的问题。列车通过高架车站以及在车站内频繁地制动或起动时,会引起列车和高架车站结构之间的动力相互作用,这种动力作用对结构的安全性和乘客及站内工作人员的舒适性产生影响。本文在车桥耦合振动理论的基础上,研究了高速铁路高架车站结构在车辆激励下的振动响应这一振动工程研究领域的前沿课题。通过建立列车一高架车站耦合系统三维动力分析模型,实现列车高速通过车站和在车站内制动或起动时的全过程动力仿真分析,对列车荷载在高架车站内传递规律进行研究,并对高架车站结构在列车荷载作用下的振动安全性和使用舒适度以及列车高速通过车站结构时的运行安全性和平稳性进行振动评价。主要的研究内容和创新点包括： (1)对高速铁路及高架车站的发展进行了综述,总结了高架车站的结构形式及特点、振动问题及研究内容。重点对车桥耦合振动、高架车站动力分析和列车纵向动力作用研究现状进行了总结,指出目前高架车站振动和列车纵向作用研究中的不足之处。 (2)在以前列车纵向分析的传统单质点分析模型和纵向多质点模型基础上,建立高速动车组的纵向动力分析模型。基于此高速动车组的纵向分析模型,通过我国CRH2型200km/h动车组按7级常用制动在线路上制动停车的算例,计算得到作用于轨面的列车制动力时程。同时,研究了列车制动时对桥梁的纵向动力作用,通过建立考虑梁轨纵向相互作用的车辆—轨道—桥梁系统纵向动力分析模型,以典型国产高速列车制动时通过铺设无缝钢轨的十跨高墩简支梁桥作为算例,求解高速列车制动时车辆—轨道—桥梁系统的纵向动力响应。并与我国桥涵设计规范中关于列车制动附加力对桥梁结构静力作用的计算结果进行比较分析。 (3)建立了考虑列车纵向作用的高速列车—高架车站系统动力分析模型,其中车辆子系统以多刚体动力学建立三维动力分析模型,推导考虑纵向自由度的车辆运动方程。车站结构子系统通过有限元建模,两者通过纵向、垂向和横向轮轨关系假定联系起来,由此建立的系统方程通过全过程迭代法求解。其中车辆—结构耦合关系是系统动力分析的关键,主要介绍了轮轨垂向和纵向密贴假定,横向的简化的Kaller线性蠕滑理论或蛇形波假定。而数值求解方法是研究的难点,主要介绍了全过程迭代法的计算流程及其与以往计算方法的区别和优势。 (4)对列车在高架车站内制动进站和起动出站时车站结构的关键部位进行动力测试,分析列车的制动和起动对车站结构的振动影响,同时也为高架车站的动力仿真计算分析提供试验验证。并且进一步对车站结构的使用舒适性和安全性进行评价,并研究判别车站使用舒适性和安全性的初步标准。 (5)以第3章介绍的高速列车—高架车站动力分析基本理论为基础,以南京南站为算例,计算分析南京南站在不同列车不同的运行状态下的动力响应特征,并结合第四章南京南站的动力测试,对比制动工况下的计算结果和实测结果。最后对列车和高架车站结构的振动舒适性进行评价。
[Abstract]:Abstract: along with the growing demand of the national economy, the railway construction has been developed rapidly. The construction scale of the station is becoming larger and larger. The three-dimensional structure form of the elevated station has also been adopted more and more, playing a important role in the efficient organization of traffic and the construction of the city. At the same time, this new type of station junction is made. It also brings some new problems. Trains pass through elevated stations and frequently brake or start within the station, causing the dynamic interaction between trains and the structure of the elevated station, which affects the safety of the structure and the comfort of the passengers and the staff in the station.
On the basis of the theory of vehicle bridge coupling vibration, this paper studies the frontiers of the vibration response of high speed railway elevated station structure under the excitation of vehicles. Through the establishment of a three-dimensional dynamic analysis model of the coupling system of the train one elevated station, the high speed of the train can be brake or start at the station and in the station. The dynamic simulation analysis of the whole process is carried out to study the transmission law of the train load in the elevated station, and the vibration safety and comfort of the elevated station structure under the load of the train and the safety and stability of the train running through the station structure are evaluated. The main research content and the innovative point package are carried out. Including:
(1) the development of high speed railway and viaduct station is reviewed. The structure and characteristics of the elevated station, the vibration problem and the research content are summarized. The research status of the coupling vibration of the vehicle bridge, the dynamic analysis of the elevated station and the longitudinal dynamic action of the train are summarized, which refers to the study of the vibration of the elevated station and the longitudinal action of the train at present. Inadequacies.
(2) on the basis of the traditional single point analysis model and the longitudinal multi particle model, the longitudinal dynamic analysis model of the high speed EMU is established. Based on the longitudinal analysis model of the high speed EMU, the calculation is used to calculate the braking of the CRH2 type 200km/h EMU based on the braking of the common brake on the line. At the same time, the longitudinal dynamic effect of the train braking on the bridge is studied, and the longitudinal dynamic analysis model of the vehicle track bridge system is set up in consideration of the longitudinal interaction of the beam and rail. The ten span high pier simple supported beam bridge is solved by the typical domestic high-speed train, which is solved as an example. The longitudinal dynamic response of the vehicle track bridge system during the braking of the high-speed train is compared with the results of the calculation of the static action of the train braking additional force on the bridge structure in the design specification of the bridge and culvert in our country.
(3) the dynamic analysis model of high speed train and viaduct system is established considering the longitudinal action of the train, in which the vehicle subsystem builds a three-dimensional dynamic analysis model with multi rigid body dynamics and derives the vehicle motion equation considering the longitudinal freedom. The station structure subsystem is modeled by the finite element method, both through the vertical, vertical and lateral wheel rail passes. The system equation established by the assumption is solved by the whole process iteration method. The vehicle structure coupling relationship is the key to the dynamic analysis of the system. The vertical and vertical postulate of the wheel and rail, the transverse and simplified Kaller linear creep theory or the snake like assumption are mainly introduced. The calculation process of the whole process iteration method and its differences and advantages from previous calculation methods are introduced.
(4) test the dynamic test on the key parts of the station structure when the train stops in the elevated station and start out the station, analyzes the influence of the train braking and starting on the vibration of the station structure, and also provides experimental verification for the dynamic simulation and analysis of the elevated station. And the use of the station structure is more comfortable and safe. The preliminary criteria for judging the comfort and safety of stations are evaluated.
(5) based on the basic theory of the dynamic analysis of the high speed train and viaduct introduced in the third chapter, taking the NanJing South Railway Station as an example, the dynamic response characteristics of the NanJing South Railway Station are calculated and analyzed in different running states of different trains, and the calculation results and the measured results under the specific braking condition are analyzed with the dynamic test of fourth chapters. The vibration comfort of the train and elevated station structure is evaluated.
【学位授予单位】：北京交通大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TU311.3;TU248.1

【参考文献】