| 引用本文: | 马登成,徐天昊,桂学,王恩东.RAP级配自动实时检测系统设计及仿真分析[J].哈尔滨工业大学学报,2024,56(8):145.DOI:10.11918/202308038 |
| MA Dengcheng,XU Tianhao,GUI Xue,WANG Endong.Design and simulation analysis of real-time automatic detection system for RAP gradation[J].Journal of Harbin Institute of Technology,2024,56(8):145.DOI:10.11918/202308038 |
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| RAP级配自动实时检测系统设计及仿真分析 |
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马登成1,徐天昊1,桂学2,王恩东3
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(1.公路养护装备国家工程研究中心(长安大学),西安 710064; 2.陕西中霖沥青路面养护科技有限公司,西安 710124; 3.山东高速工程咨询集团有限公司,济南 250014)
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| 摘要: |
| 为快速、准确检测沥青路面回收料（reclaimed asphalt pavement,RAP）的级配,提高RAP级配的检测效率并降低人工操作对检测结果的影响,将目前检测RAP性能常用的设备与方法相结合,提出了一种对RAP含水率、RAP的油石比及其级配一体化检测的方法。同时,针对目前RAP检测存在的问题,设计了新型的RAP级配自动检测设备,实现了RAP级配的自动实时检测。首先,根据RAP级配的检测功能要求设计了检测设备的整体结构。其次,建立了检测设备核心关键结构振动筛分部件的仿真模型,采用EDEM离散元仿真软件模拟了筛分全过程；仿真采用控制变量法对振动筛中的集料颗粒在不同筛面倾斜角、振动频率、振动方向角等参数的情况下进行对比分析。最后,以符合标准要求的最优筛分效率为目标对振动筛进行优化设计。结果表明:当振动筛倾斜角为3°、振幅为4 mm、振动频率为16 Hz、振动方向角为63°时,振动筛各层筛网的筛分效率均达到91%以上,能够满足实际需要。证明了RAP级配自动实时检测系统能实现RAP含水率、RAP的油石比、级配的检测,为实现智能再生拌合站的研发提供可能,同时该检测系统也可代替人工作为日常沥青混合料级配监测的新手段。 |
| 关键词: RAP级配 含水率 RAP的油石比 实时检测设备 筛分效率 |
| DOI：10.11918/202308038 |
| 分类号:U416.26；U418.6 |
| 文献标识码:A |
| 基金项目:陕西省自然科学基金面上项目(2024JC-YBMS-413) |
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| Design and simulation analysis of real-time automatic detection system for RAP gradation |
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MA Dengcheng1,XU Tianhao1,GUI Xue2,WANG Endong3
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(1.National Engineering Research Center of Highway Maintenance Equipment (Chang’an University), Xi’an 710064, China; 2.Shaanxi Zhonglin Asphalt Pavement Maintenance Technology Co., Ltd., Xi’an 710124, China; 3.Shandong High-speed Engineering Consulting Group Co., Ltd., Jinan 250014, China)
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| Abstract: |
| To quickly and accurately detect the gradation of reclaimed asphalt pavement (RAP) and improve the detection efficiency of RAP gradation while reducing the influence of manual operation on detection results, this study proposes a method for integrated detection of RAP moisture content, RAP oil-stone ratio, and gradation by combining currently commonly used equipment and methods for testing RAP performance. At the same time, in view of current issues in RAP detection, a new type of automatic detection equipment for RAP gradation is designed, enabling real-time and automated detection of RAP gradation. Firstly, according to the functional requirements of RAP gradation detaction, the overall structure of the detection equipment is designed. Secondly, a simulation model of the key structure of the testing equipment, the vibrating screening unit, is established, and the whole screening process is simulated by EDEM discrete element simulation software. A controlled variable method is used to compare and analyze the aggregate particles in the vibrating screen under different parameters such as inclination angle, vibration frequency, vibration direction angle. Finally, the vibrating screen is optimized for the optimal screening efficiency that meets the requirements of the standard. The results show that when the inclination angle of the vibrating screen is 3°, the amplitude is 4mm, the frequency is 16 Hz, and the vibration direction angle is 63°, the screening efficiency of each layer of the vibrating screen mesh reaches over 91%, meeting the practical needs. This demonstrate that the automatic real-time RAP gradation detection system is capable of measuring RAP moisture content, asphalt content, and gradation, providing a possibility for the development of intelligent regenerative mixing stations and can also replace manual as a new means of daily asphalt mixture gradation monitoring. |
| Key words: gradation of reclaimed asphalt pavement（RAP） moisture content oil-stone ratio of RAP real-time detection equipment screening efficiency |
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