Study On The Evaluation Method Of Highway Alignment Comfortableness Based On Acceleration Noise

With the rapid development of our country's economic society,the construction of highway has caused more and more people's attention.At the same time,the requirements of people on the road traffic are no longer confined to the security,fast,economic and other aspects,riding comfort has gradually become an important factor affecting the quality of road travel.Nowadays the study of riding comfort is mostly from the area of vehicle research.It improves riding comfort by improving the structure of vehicle.The study on the evaluation method of highway comfortableness is relatively small,and there is still no relatively mature theoretical system.This paper has summarized the research status at home and abroad from the alignment perspective.By analyzing the factors that affect the riding comfort,the advantages and disadvantages of all kinds of evaluation methods,the acceleration noise is defined to evaluate the riding comfort of highway alignment.Based on the analysis of the force on the cross section of the vehicle,the lateral acceleration noise model is established,and the evaluation index of lateral acceleration noise is determined.Combined with test section,the model is verified by the practicability and reliability,by using matlab software to evaluate the riding comfort of highway alignment.The establishment of the new model can provide a reasonable mathematical model for the evaluation of riding comfort,in order to achieve the purpose of quantitative analysis.The research value of this paper is that it establishes the lateral acceleration noise model which can be applied to evaluate the riding comfort of highway alignment,verifies the model through the text section.The new model not only can provide a quantitative index to evaluate the riding comfort of the built highway,but also can be used to guide the highway alignment design during the design stage.