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| 沥青混合料压实度振动加速度温度关系模型 |
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赵毅1, 杨臻2, 梁乃兴2, 曹源文3, 向阳开4
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1.重庆交通大学交通土建工程材料国家地方联合工程实验室,重庆400074;2.重庆交通大学土木工程学院,重庆400074;3.重庆交通大学机电与车辆工程学院,重庆400074;4.重庆交通大学材料科学与工程学院,重庆400074
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| 摘要: |
| 将抚吉高速公路作为试验路段，基于质量弹簧阻尼耦合模型，构建了振动压路机振动轮被压材料系统动力学模型，开发了沥青混合料振动压实实时分析检测系统.以现场实测沥青混合料摊铺—碾压过程的温度分布为基础，构建了AC 20、AC 25、ATB 25沥青混合料的压实度振动加速度温度关系模型.结果表明：振动压路机振动轮垂直加速度与被压沥青材料刚度成正比，与其阻尼成反比；沥青混合料压实度与振动加速度有效值呈线性关系；AC 25沥青混合料压实度振动加速度温度关系模型的相关性系数R2为099，压实度计算值与实测值的差值介于-30%～14%. |
| 关键词: 道路工程 沥青混合料 压实度 振动加速度 温度分布 模型 |
| DOI：103969/j.issn.1007 9629202103023 |
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| 基金项目:河北省交通运输厅科技项目（QC2018 3）；中国博士后科学基金资助项目（43XB3787XB）；云南省交通运输厅科技项目（2018 23） |
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| Relational Model of Compactness Vibration Acceleration Temperature of Asphalt Mixture |
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ZHAO Yi1, YANG Zhen2, LIANG Naixing2, CAO Yuanwen3, XIANG Yangkai4
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1.National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing 400074, China;2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;3.School of Mechanical and Electrical Engineering, Chongqing Jiaotong University, Chongqing 400074, China;4.School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
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| Abstract: |
| Relying on Fuji Highway, a system dynamics model of vibration wheel of vibratory roller compressed materials was established on the basis of mass spring damping coupling model, and the real time analysis and detection system of vibration compaction of asphalt mixture was developed. Based on the field measurement of temperature distribution of asphalt mixture during paving and rolling process, the relational model of compactness vibration acceleration temperature of AC 20, AC 25 and ATB 25 asphalt mixture was established. The results show that the vertical acceleration of vibration wheel of vibratory roller is proportional to the stiffness of the compressed asphalt material and inversely proportional to the damping. The compactness of asphalt mixtures shows quite good linear relationship with vibration acceleration virtual value. The correlation coefficient square of the compactness vibration acceleration temperature relational model of AC 25 is 099, and the difference between the calculated value and the measured value of compactness is -30%14%. |
| Key words: road engineering asphalt mixture compactness vibration acceleration temperature distribution model |
