| 沥青路面压电输出的数值模拟与试验 |
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| 引用本文： | 纪小平,陈云,何创,甄逸康.沥青路面压电输出的数值模拟与试验[J].中国公路学报,2019,32(4):130. |
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| 作者姓名： | 纪小平 陈云 何创 甄逸康 |
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| 作者单位： | 1. 长安大学 公路学院, 陕西 西安 710064;
2. 广州市高速公路有限公司营运分公司, 广东 广州 511385;
3. 深圳高速工程顾问有限公司, 广东 深圳 518000 |
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| 基金项目： | 陕西省自然科学基础研究计划项目（2017JM5034，2017JQ5030）；陕西省创新能力支撑计划项目（2017KW-033）；中央高校基本科研业务费专项资金项目（310821172008） |
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| 摘 要： | 基于ABAQUS建立了沥青路面压电输出（电压）的数值模拟方法，系统地研究了压电换能器属性及铺设参数、路面结构与温度、轴载等对沥青路面压电输出的影响，为优化设计沥青路面压电能收集系统提供参考。通过车辙试验测试了压电式沥青混合料的电压，并与数值模拟结果进行对比，验证数值模拟方法的可靠性。结果表明：路面模型平面尺寸大于5.0 m×5.0 m可保证模拟精度；压电材料PZT-5X具有相对较低的弹性模量和最高的压电参数，因此电压最高，其分别是PZT-4与PZT-5H的1.77倍与1.97倍；长方体与圆筒形状压电换能器的压电基本一致，均为柱形的1.40倍；优先推荐使用内径0.8 cm、外径1.6 cm、高0.2 cm的圆筒PZT-5X压电换能器；电压随轴载与路面温度的增加而增大、随埋置深度的增加而降低，柔性路面结构比半刚性结构的电压大。室内车辙板试件表面和距路表1 cm处的压电换能器的实测电压与数值模拟结果的误差在3.9%之内。
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| 关 键 词： | 道路工程 沥青路面 数值模拟 压电输出 能量收集 |
| 收稿时间： | 2018-05-28 |
Numerical Simulation and Experimental Research on Harvesting Piezoelectric Voltage from Asphalt Pavement |
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| JI Xiao-ping,CHEN Yun,HE Chuang,ZHEN Yi-kang.Numerical Simulation and Experimental Research on Harvesting Piezoelectric Voltage from Asphalt Pavement[J].China Journal of Highway and Transport,2019,32(4):130. |
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| Authors: | JI Xiao-ping CHEN Yun HE Chuang ZHEN Yi-kang |
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| Affiliation: | 1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;
2. Operation Branch of Guangzhou Expressway Co., Ltd., Guangzhou 511385, Guangdong, China;
3. Shenzhen Expressway Engineering Consultants Co., Ltd., Shenzhen 518000, Guangdong, China |
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| Abstract: | A numerical simulation method to model the harvest of piezoelectric voltage from asphalt pavement using ABAQUS was established. The effects of the properties and parameters of embedded piezoelectric transducers, pavement structure and temperature, and traffic loads on the piezoelectric voltage from asphalt pavement were investigated, given the significance of their influence on the optimization of the piezoelectric energy collection system. The numerical simulation results were compared against the piezoelectric voltage output of the asphalt mixture tested using the rutting test to verify its reliability. The simulation results indicate that the PZT-5X transducer achieves the maximum piezoelectric voltage, which is 1.77 and 1.97 times those achieved by PZT-4 and PZT-5H, respectively, because PZT-5X has the relatively low elastic modulus and the highest piezoelectric parameters among the three materials tested. The piezoelectric voltage obtained from the cuboidal and cylindrical piezoelectric transducers is 1.40 times that of the voltage obtained from columnar piezoelectric transducers. Moreover, PZT-5X cylindrical piezoelectric transducers with dimensions of 0.8 cm (inner diameter), 1.6 cm (outer diameter), and 0.2 cm (height) are recommended. The piezoelectric voltage is positively correlated with load and pavement temperature, but is negatively correlated with embedding depth. The flexible pavement structure has a higher piezoelectric voltage output than the semi-rigid pavement structure. The measured voltages from the piezoelectric transducers embedded in the sample surface, and from points 1 cm below the surface, had errors within 3.9% compared to the numerical simulation results. |
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| Keywords: | road engineering asphalt pavement numerical simulation piezoelectric voltage energy harvesting |
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