高效压路机性能研究

发布时间：2018-02-12 09:15

本文关键词： 冲击振动压路机压实理论动态仿真路基压实　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：现代公路建设对质量的要求越来越高,另外,公路建设对我国基础经济发展的重要性也越来越大。所以,公路建设所需要的施工机械的性能要求急需得到提高。而压路机的工作性能更是直接影响着施工道路的压实度、平整度等,所以,如何提高压路机性能的研究课题对我国的公路建设质量的提高具有重大意义。冲击振动复合压实设备是在探讨新的压实理论与压实技术的条件下发展而来的,它将单一类型的冲击压路机和振动压路机两者性能相组合,使其能在一台机器上形成同时具备静碾、振动和冲击三种类型的压实设备。这无疑将会使压实作业的工作效率大大提高,并且能达到更好的压实效果。本论文首先介绍了目前市场上各种压实设备的性能特征,然后从理论上证明冲击振动压路机产品的可行性,根据相似理论中结构相似、尺寸相似、性能相似等,设计工程样机。建立压路机—土壤系统的动力学模型,将机械与土壤力学原理相结合研究,完善了冲击振动压路机的压实技术与理论。通过三维建模软件Solidworks建立主要部件的几何实体模型;考虑土壤性质的多样性,提高仿真结果的真实性,用ANSYS生成参数化的柔性体模拟地面;利用ADAMS软件对实体模型进行一系列的动力学仿真,对仿真结果进行分析,得出各工作参数对压实效果的影响。根据仿真结果和理论分析,得出了压实度与主要几种压实工艺参数的变化关系,以及各参数之间的规律性关系,本文研究的一些成果,对更深层次的进行冲击振动压实新技术的研究非常有益,对一些复杂工况的路基压实以及粘性土压实等难题提供了一种可行性的解决方案,同时对压实机械的工程实际应用也具有一些有益的参加价值。
[Abstract]:Modern highway construction requires more and more high quality. In addition, highway construction is becoming more and more important to the basic economic development of our country. The performance requirement of the construction machinery needed for highway construction needs to be improved urgently, and the working performance of the road roller directly affects the compactness and smoothness of the construction road, so, How to improve the performance of roller is of great significance to the improvement of highway construction quality in China. The compound compaction equipment of impact vibration is developed under the condition of discussing new compaction theory and compaction technology. It combines the performance of a single type of impact roller with a vibrating roller so that it can be formed on a single machine with a static roller. There are three types of compaction equipment, vibration and shock. This will undoubtedly improve the working efficiency of compaction operation and achieve better compaction effect. This paper first introduces the performance characteristics of various compaction equipments on the market. Then the feasibility of the impact vibration roller product is proved theoretically. According to the similarity theory of structure, size and performance, the engineering prototype is designed, and the dynamic model of the roller and soil system is established. The compaction technology and theory of impact vibration roller are improved by combining mechanical and soil mechanics principles. The geometric solid model of main components is established by using 3D modeling software Solidworks, and the diversity of soil properties is considered. To improve the authenticity of the simulation results, ANSYS is used to generate parametric flexible body to simulate the ground, and a series of dynamic simulation of the solid model is carried out by using ADAMS software, and the simulation results are analyzed. According to the simulation results and theoretical analysis, the relationship between compaction degree and main compaction process parameters, as well as the regular relationship between them, is obtained. The further research on the new technology of impact vibration compaction is very beneficial, which provides a feasible solution for some difficult problems such as roadbed compaction under complex working conditions and clay soil compaction. At the same time, it has some beneficial participation value for the practical application of compaction machinery.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U415.521

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