基于Carsim仿真软件的公路线形安全评价方法研究

发布时间：2018-04-06 05:06

本文选题：低等级公路　切入点：汽车动力学仿真　出处：《长安大学》2014年硕士论文

【摘要】：低等级公路的交通安全一直备受关注，交通事故占事故总量的比例较大。现行的道路安全评价方法如运行速度法和事故率法均存在诸多问题。利用汽车动力学仿真软件进行道路安全评价能够弥补以上方法的一些不足，对提高道路安全具有重要的现实意义和社会效益。本文的主要研究对象定位在低等级公路，，通过计算机仿真手段，获取小汽车在仿真道路上的仿真运行参数，从而筛选与交通安全有关的指标，进行安全评价。主要研究内容包括：基于汽车动力学仿真软件Carsim，设置了车体、悬挂系统、转向系统、制动系统参数等，建立典型车辆仿真模型。基于公路线形设计数据，建立了公路仿真模型。合理确定了驾驶员操纵模式，建立了驾驶员仿真模型。筛选了低等级公路交通安全仿真评价指标，确定评价标准，结合具体工程实践，进行了安全评价，提出改善措施。论文的研究成果表明，本文提出的研究方法及评价指标可以用于低等级公路安全评价中，对于低等级公路交通安全改善具有实用价值。
[Abstract]:Low-grade highway traffic safety has been concerned, traffic accidents account for a large proportion of the total number of accidents.There are many problems in the current evaluation methods of road safety, such as speed method and accident rate method.The application of vehicle dynamics simulation software to road safety evaluation can make up for some shortcomings of the above methods and has important practical and social benefits to improve road safety.The main research object of this paper is located in the low-grade highway. By computer simulation, the simulation parameters of the car on the simulated road are obtained, and the indexes related to the traffic safety are selected for safety evaluation.The main research contents are as follows: based on Carsim-based vehicle dynamics simulation software, the vehicle body, suspension system, steering system and braking system parameters are set up, and the typical vehicle simulation model is established.Based on the design data of highway alignment, a highway simulation model is established.The driver control mode is reasonably determined and the driver simulation model is established.The evaluation index of traffic safety of low grade highway is screened, the evaluation standard is determined, and the safety evaluation is carried out in combination with the concrete engineering practice, and the improvement measures are put forward.The research results show that the research method and evaluation index proposed in this paper can be used in the evaluation of low-grade highway safety and have practical value for the improvement of low-grade highway traffic safety.
【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】：U412.3;U492.8

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