沥青路面质量过程控制智能化技术研究
发布时间：2019-03-08 15:18
【摘要】：如何将现代科学技术融入到施工质量过程控制中,保证路面施工过程中始终贯彻设计意图、确保施工质量的均匀性与稳定性是目前公路界面临的一个重大课题。为此,本文针对沥青路面施工全过程进行了以下几方面的研究:⑴利用自主研发的沥青拌和楼数据采集系统,对沥青混合料生产各参数进行了数据采集;对影响沥青混合料生产质量的参数进行比较,最终选取了沥青含量、配合比、拌和温度等作为沥青路面质量过程控制的关键参数;对生产过程中数据的变异性进行研究,为进一步的质量控制技术研究提供思路。⑵分析了利用基于MATLAB的图像处理技术对沥青拌和楼热料仓分段级配进行提取的可行性;通过室内试验,获取动态的下落集料图像,并对采集到的图像进行预处理、增强、分割、分析等操作,最终得出被测集料级配,并与实际级配值进行对比,试验效果良好;设计并完成了基于MATLAB编程语言的沥青拌和楼热料仓分段级配提取软件。⑶在试验室内常用的水泥砂浆搅拌机的基础上,通过增加转速调节设备,扭矩传感器,电流互感器,记录仪等外接装置,实现了电流、扭矩、功率及转速数据的实时监控;通过对沥青混合料拌和过程电流特性的研究,确定了沥青混合料最佳拌和温度、拌和时间;在流变特性的基础上,建立了沥青混合料宾汉姆模型,提出了利用沥青混合料拌和流变特性与温度的对应关系来确定沥青混合料压实温度的方法。⑷通过对振动压路机加装振动加速度传感器、红外测温传感器,分别分析了压路机振动加速度值与路面压实度,碾压遍数与温度的相关性,得出了利用加速度值评价压实度的方法,为实时控制压实质量奠定坚实基础;开发了压路机GPS定位设备,并集成应用振动加速度传感器、红外测温传感器,构建了压路机碾压实时监控系统,实现对碾压轨迹、碾压遍数、压实度及碾压温度的实时监控,有效保证了沥青路面压实质量。以上研究依托锁蒙高速四标段和邢衡高速二标段工程实际,结合计算机技术、信息工程、统计学等知识,对沥青路面施工过程进行质量控制,具有一定创新性,可为道路工程中沥青路面施工质量在线监控提供试验方法和理论依据,同时为完善质量监管措施提供一定的参考价值。
[Abstract]:How to integrate modern science and technology into the process control of construction quality, ensure that the design intention is always carried out in the process of pavement construction, and ensure the uniformity and stability of construction quality are an important subject facing the highway field at present. Therefore, the whole process of asphalt pavement construction is studied in the following aspects: (1) the data collection system of asphalt mixing plant is used to collect the data of asphalt mixture production parameters; The parameters affecting the production quality of asphalt mixture are compared, and the asphalt content, mix ratio and mixing temperature are selected as the key parameters of asphalt pavement quality control. The variability of data in the process of production is studied to provide a way for further research on quality control technology. (2) the feasibility of using image processing technology based on MATLAB to extract segment gradation of hot bunker in asphalt mixing plant is analyzed. Through the indoor test, the dynamic falling aggregate image is obtained, and the collected image is preprocessed, enhanced, segmented, analyzed and so on. Finally, the measured aggregate gradation is obtained and compared with the actual gradation value, the test result is good. The software based on MATLAB programming language is designed and completed. 3Based on the cement mortar mixer commonly used in the laboratory, the speed adjusting equipment, torque sensor and current transformer are added, which are used in the cement mortar mixer of asphalt mixing plant by adding speed adjusting equipment, torque sensor, current transformer, and so on, by adding speed adjusting equipment, torque sensor and current transformer. The external device such as recorder realizes the real-time monitoring of current, torque, power and rotational speed data. The optimum mixing temperature and mixing time of asphalt mixture were determined by studying the current characteristics of asphalt mixture mixing process. On the basis of rheological properties, the Bingham model of asphalt mixture was established. This paper presents a method to determine the compaction temperature of asphalt mixture by using the relationship between rheological properties of asphalt mixture and temperature. (4) by adding vibration acceleration sensor and infrared temperature sensor to the vibratory roller, the temperature of asphalt mixture can be determined by adding vibration acceleration sensor and infrared temperature sensor to the vibratory roller. The correlation between vibrational acceleration value of roller and compactness of road surface, number of roller compacting times and temperature are analyzed respectively, and the method of evaluating compactness by using acceleration value is obtained, which lays a solid foundation for real-time control of compaction quality. The GPS positioning equipment of roller is developed, and the real-time monitoring system of roller rolling is constructed by integrating vibration acceleration sensor and infrared temperature sensor to realize the real-time monitoring of rolling track, roller number, compacting degree and rolling temperature, and the real-time monitoring of rolling track, compacting number, compacting degree and rolling temperature is realized. The compacting quality of asphalt pavement is guaranteed effectively. The above research relies on the engineering practice of the fourth and the second section of Xingheng Expressway, combining with the knowledge of computer technology, information engineering, statistics and so on, carries on the quality control to the asphalt pavement construction process, which is innovative to a certain extent. It can provide test method and theoretical basis for on-line monitoring of construction quality of asphalt pavement in road engineering, and provide certain reference value for perfecting quality supervision measures at the same time.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217
本文编号：2436937
[Abstract]:How to integrate modern science and technology into the process control of construction quality, ensure that the design intention is always carried out in the process of pavement construction, and ensure the uniformity and stability of construction quality are an important subject facing the highway field at present. Therefore, the whole process of asphalt pavement construction is studied in the following aspects: (1) the data collection system of asphalt mixing plant is used to collect the data of asphalt mixture production parameters; The parameters affecting the production quality of asphalt mixture are compared, and the asphalt content, mix ratio and mixing temperature are selected as the key parameters of asphalt pavement quality control. The variability of data in the process of production is studied to provide a way for further research on quality control technology. (2) the feasibility of using image processing technology based on MATLAB to extract segment gradation of hot bunker in asphalt mixing plant is analyzed. Through the indoor test, the dynamic falling aggregate image is obtained, and the collected image is preprocessed, enhanced, segmented, analyzed and so on. Finally, the measured aggregate gradation is obtained and compared with the actual gradation value, the test result is good. The software based on MATLAB programming language is designed and completed. 3Based on the cement mortar mixer commonly used in the laboratory, the speed adjusting equipment, torque sensor and current transformer are added, which are used in the cement mortar mixer of asphalt mixing plant by adding speed adjusting equipment, torque sensor, current transformer, and so on, by adding speed adjusting equipment, torque sensor and current transformer. The external device such as recorder realizes the real-time monitoring of current, torque, power and rotational speed data. The optimum mixing temperature and mixing time of asphalt mixture were determined by studying the current characteristics of asphalt mixture mixing process. On the basis of rheological properties, the Bingham model of asphalt mixture was established. This paper presents a method to determine the compaction temperature of asphalt mixture by using the relationship between rheological properties of asphalt mixture and temperature. (4) by adding vibration acceleration sensor and infrared temperature sensor to the vibratory roller, the temperature of asphalt mixture can be determined by adding vibration acceleration sensor and infrared temperature sensor to the vibratory roller. The correlation between vibrational acceleration value of roller and compactness of road surface, number of roller compacting times and temperature are analyzed respectively, and the method of evaluating compactness by using acceleration value is obtained, which lays a solid foundation for real-time control of compaction quality. The GPS positioning equipment of roller is developed, and the real-time monitoring system of roller rolling is constructed by integrating vibration acceleration sensor and infrared temperature sensor to realize the real-time monitoring of rolling track, roller number, compacting degree and rolling temperature, and the real-time monitoring of rolling track, compacting number, compacting degree and rolling temperature is realized. The compacting quality of asphalt pavement is guaranteed effectively. The above research relies on the engineering practice of the fourth and the second section of Xingheng Expressway, combining with the knowledge of computer technology, information engineering, statistics and so on, carries on the quality control to the asphalt pavement construction process, which is innovative to a certain extent. It can provide test method and theoretical basis for on-line monitoring of construction quality of asphalt pavement in road engineering, and provide certain reference value for perfecting quality supervision measures at the same time.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.217
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1 李忠民;基于图像处理的沥青混合料检测系统设计研究[D];长安大学;2010年
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