瀝青路面質(zhì)量過程控制智能化技術(shù)研究
發(fā)布時間：2019-03-08 15:18
【摘要】：如何將現(xiàn)代科學(xué)技術(shù)融入到施工質(zhì)量過程控制中,保證路面施工過程中始終貫徹設(shè)計意圖、確保施工質(zhì)量的均勻性與穩(wěn)定性是目前公路界面臨的一個重大課題。為此,本文針對瀝青路面施工全過程進行了以下幾方面的研究:⑴利用自主研發(fā)的瀝青拌和樓數(shù)據(jù)采集系統(tǒng),對瀝青混合料生產(chǎn)各參數(shù)進行了數(shù)據(jù)采集;對影響瀝青混合料生產(chǎn)質(zhì)量的參數(shù)進行比較,最終選取了瀝青含量、配合比、拌和溫度等作為瀝青路面質(zhì)量過程控制的關(guān)鍵參數(shù);對生產(chǎn)過程中數(shù)據(jù)的變異性進行研究,為進一步的質(zhì)量控制技術(shù)研究提供思路。⑵分析了利用基于MATLAB的圖像處理技術(shù)對瀝青拌和樓熱料倉分段級配進行提取的可行性;通過室內(nèi)試驗,獲取動態(tài)的下落集料圖像,并對采集到的圖像進行預(yù)處理、增強、分割、分析等操作,最終得出被測集料級配,并與實際級配值進行對比,試驗效果良好;設(shè)計并完成了基于MATLAB編程語言的瀝青拌和樓熱料倉分段級配提取軟件。⑶在試驗室內(nèi)常用的水泥砂漿攪拌機的基礎(chǔ)上,通過增加轉(zhuǎn)速調(diào)節(jié)設(shè)備,扭矩傳感器,電流互感器,記錄儀等外接裝置,實現(xiàn)了電流、扭矩、功率及轉(zhuǎn)速數(shù)據(jù)的實時監(jiān)控;通過對瀝青混合料拌和過程電流特性的研究,確定了瀝青混合料最佳拌和溫度、拌和時間;在流變特性的基礎(chǔ)上,建立了瀝青混合料賓漢姆模型,提出了利用瀝青混合料拌和流變特性與溫度的對應(yīng)關(guān)系來確定瀝青混合料壓實溫度的方法。⑷通過對振動壓路機加裝振動加速度傳感器、紅外測溫傳感器,分別分析了壓路機振動加速度值與路面壓實度,碾壓遍數(shù)與溫度的相關(guān)性,得出了利用加速度值評價壓實度的方法,為實時控制壓實質(zhì)量奠定堅實基礎(chǔ);開發(fā)了壓路機GPS定位設(shè)備,并集成應(yīng)用振動加速度傳感器、紅外測溫傳感器,構(gòu)建了壓路機碾壓實時監(jiān)控系統(tǒng),實現(xiàn)對碾壓軌跡、碾壓遍數(shù)、壓實度及碾壓溫度的實時監(jiān)控,有效保證了瀝青路面壓實質(zhì)量。以上研究依托鎖蒙高速四標(biāo)段和邢衡高速二標(biāo)段工程實際,結(jié)合計算機技術(shù)、信息工程、統(tǒng)計學(xué)等知識,對瀝青路面施工過程進行質(zhì)量控制,具有一定創(chuàng)新性,可為道路工程中瀝青路面施工質(zhì)量在線監(jiān)控提供試驗方法和理論依據(jù),同時為完善質(zhì)量監(jiān)管措施提供一定的參考價值。
[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.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U416.217
本文編號：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.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U416.217
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