针对现有压电换能器用于道路工程存在的技术缺陷，优选出适用于道路发电的堆叠式俘能单元结构并优化尺寸，制备出8种路用堆叠式压电俘能单元，借助力学性能试验评估结构强度，开发出压电俘能单元测试夹具并搭建发电性能模拟测试系统，研究了压电俘能单元的发电性能，测试了发电路面小尺寸试件的能量输出效果。结果表明：制备的堆叠式压电俘能单元结构强度良好，能够满足发电路面施工及工作的使用要求；在试验研究范围内荷载大小、加载频率、压电陶瓷片厚度及堆叠层数均与压电俘能单元的发电性能正相关，单片厚度为1.0mm的堆叠式压电俘能单元输出的最大开路电压可达37.8V、最大功率可达183.2mW；典型发电路面小尺寸试件能够实现11.06mW的能量输出，具备了理想的应用前景。
Abstract
To eliminate technical defects of piezoelectric transducers used in road engineering, piezoelectric stack harvesting unit structures being applicable to road power generation were preferably selected and their sizes were optimized, 8 piezoelectric stack harvesting units used in road engineering were prepared. Their structural strengths were evaluated by means of mechanical property tests. The test fixtures for piezoelectric harvesting units were developed, and the anlog test systems for electricity generating performance were constructed. The electricity generating performance of piezoelectric harvesting units was studied, the electrical energy output effect of power pavement’s small-size specimens were measured. The results showed that the structural strength of the piezoelectric stack harvesting units prepared is good to meet the requirements of power pavement’s construction and working; within the test range, magnitude of load, loading frequency, thickness of piezoelectric ceramic piece and layer number of stack are positively correlated to electricity generating performance of piezoelectric harvesting units; the maximum open circuit voltage and the maximum power of piezoelectric stack harvesting units with monolithic thickness of 1.0mm can reach 37.8V and 183.2 mW, respectively; the energy output of the typical power pavement’s small specimen is 11.06mW, so it has an ideal application prospect.
关键词
发电路面 /
压电俘能单元 /
制备 /
应用性能 /
能量输出
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Key words
power pavement /
piezoelectric harvesting unit /
preparation /
application performance /
energy output
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参考文献
[1]. 杨桂桐.爆破振动效应及边坡动态分析[J]，爆破，1989. 6(4):9-14.
YANG Guitong. Blast shock effect and slope dynamic state anatysis[J]. Blasting. 1989. 6(4)9-14.
[2]. 张永哲.岩质高边坡开挖爆破动力稳定分析[J].工程爆破，1996.2(4): 31-38.
ZHANG Yongzhe. Dynamic stability analysis of blasting and excavation of rock high slope[J]. Engineering Blasting，1996.2(4): 31-38.
[3]. 许红涛.岩石高边坡爆破动力稳定性研究[D].武汉大学博士学位论文, 2006.
Xu Hongtao. Study on the dynamic stability ofhigh rock slope induced by blasting vibration. The Dissertation of Wuhan University for Doctor Degree,2006.
[4]. Liu Y Q，Li H B，Zhao J，etal. UDEC simulation for dynamic response of a rock slope subject to explosions[J].International Journal of Rock Mechanics and Mining Sciences，41(3)：1-6.
[5]. 陈明，卢文波，舒大强，等．爆破振动作用下边坡极限平衡分析的等效加速度计算方法[J]．岩石力学与工程学报，2009,28 (4): 784-790.
CHEN Ming, LU Wen-bo, SHU Da-qiang. Calculation method of equivalent acceleration for limit equilibrium a-nalysis of slope under blasting vibration [J]. Chinese Journal of Rock Mechanics and Engineering , 2009,28 (4): 784-790.
[6]. 王礼立. 应力波基础[M]. 北京: 国防工业出版社, 1985.
Wang Li-li. Stress wave foundation [M]. Beijing: National Defence Industry Press of China, 1985.
[7]. 石玉成,卢育霞,何少林,孙军杰,刘兴旺,刘琨. 爆破震动作用下斜坡体的地震动分布及其动应力响应特征[J]. 岩石力学与工程学报, 2014, 33(z2)：3707-3717.
SHI Yu-cheng, LU Yu-xia, HE Shao-lin, SUN Jun-jie, LIU Xing-wang, LIU Kun. Distribution characteristics of ground motion and dynamic stress response of valley slopes under blasting loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(z2)：3707-3717.
[8]. 陈思远,周传波,蒋楠,王超.露天转地下采深影响下爆破振动速度传播规律[J]. 爆破, 2016, 33(3)：23-29.
CHEN Si-yuan, ZHOU Chuan-bo, JIANG Nan, WANG Chao. Propagation Law of Blasting Vibration Velocity Influenced by Mining Depth during Transition from Open-pit to Underground Mining[J]. Blasting, 2016, 33(3) ：23-29.
[9]. 李海波，吴绵拔．反应谱分析在确定动载折减系数中的应用[J]．工程爆破，1998，4(2)：16-19．
LI Haibo，WU Mianba，Application of spectrum theory to determimng the discounted coefficient of dynamic loading[J]．Engineering Blasting，1998，4(2)：16-19．
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