[1]查旭东,王子威,胡恒武,等.导光混凝土太阳能路面空心板块模拟与制备[J].长安大学学报(自然科学版),2020,40(1):87-98.
　ZHA Xu dong,WANG Zi wei,HU Heng wu,et al.Simulation and preparation for hollow slab of solarpavement with light guide concrete[J].Journal of Chang’an University (Natural Science Edition),2020,40(1):87-98.
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导光混凝土太阳能路面空心板块模拟与制备
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第40卷
期数:
2020年1期
页码:
87-98
栏目:
道路工程
出版日期:
2020-01-15

文章信息/Info

Title:
Simulation and preparation for hollow slab of solar
pavement with light guide concrete
作者:
查旭东; 王子威; 胡恒武; 张铖坚
 长沙理工大学 交通运输工程学院，湖南 长沙 410114
Author(s):
ZHA Xudong;  WANG Ziwei;  HU Hengwu;  ZHANG Chengjian
School of Traffic and Transportation Engineering, Changsha University of Science and
Technology, Changsha 410114, Hunan, China
关键词:
道路工程; 导光混凝土; 机理模拟; 太阳能路面; 空心板块; 模型制备; 性能测试
Keywords:
road engineering;  light guide concrete;  mechanism simulation;  solar pavement;  hollow slab;  model preparation;  performance test
文献标志码:
A
摘要:
为探索合理的太阳能路面结构型式，提出一种内设拱室、导光体与太阳能电池的矩形导光混凝土空心板块结构，其中每个导光体是由平凸透镜、圆台形棱镜和圆柱形导光光纤复合而成的整体构造，平凸透镜作为进光端等间距布设于空心板块表面，导光光纤底面作为出光端汇集于拱室拱顶处，从而可将路表光能汇聚传导并投射至内置太阳能电池上进行光伏发电。首先，通过三维有限元建模模拟了空心板块路面结构的受力特点，确定满足承载能力要求的空心板块适宜长、宽、高分别为50、50、17 cm，拱宽、底厚、拱高、顶厚分别为26、5、5、7 cm；其次，采用光线追踪法仿真导光体的光路传播规律，并根据导光性能和经济性优选了导光体的设计参数，即导光光纤的半径和折射率分别为3.5 mm和1.6，平凸透镜的半径和厚度分别为10.5、4.2 mm，棱镜的高度和表面反射率分别为31.1 mm和1.0；然后，提出了导光混凝土太阳能路面空心板块模型的制备工艺，并采用自密实防水混凝土和有机玻璃导光体制备了相应的空心板块试件，测试了其力学性能和发电效能。研究结果表明：空心板块路面结构的最大拉应力和最大竖向位移随着拱宽的增加而显著增加，而随着底厚、拱高和顶厚的增加而逐渐减小，且空心板块试件的最大竖向变形小，力学强度高；导光光纤半径和平凸透镜半径对导光体单日透射的总太阳能影响显著，而平凸透镜厚度、棱镜的高度和表面反射率及导光光纤折射率的影响较小，且空心板块试件的导光体数量越多，工作电压和最大输出功率越高，相应的导光和聚光效果越好，但为保证空心板块混凝土的可模性和整体强度，导光体数量宜选用81个；空心板块试件每平米的年发电量为50~90 kW·h，其增加成本可在5~10年内回收，总体经济性较好，且具有良好的社会和环境效益。因此，该结构可满足行车和发电的双重功能要求，可为太阳能路面的研究和应用提供一种可行方案。
Abstract:
In order to explore a reasonable type of solar pavement structure, a kind of rectangular hollow slab structure of light guide concrete with builtin arch chamber, light guide bodies and solar cell was proposed. Each light guide body was an integral structure composed of a planeconvex lens, a truncated coneshaped prism and a cylindrical light guide fiber. The planeconvex lenses as light input terminals were arranged on the surface of hollow slab at equal intervals, and the bottom surfaces of light guide fibers as light output terminals were gathered at the vault of arch chamber. Thus, the light energy on road surface could be converged, transmitted and projected onto the builtin solar cell for photovoltaic power generation. Firstly, the loading features of hollow slab pavement structure were simulated through building the threedimensional finite element model, then the suitable length, width and height of hollow slab structure to meet the requirements of bearing capacity were determined to be 50, 50, 17 cm respectively, and the arch width, floor thickness, arch height and roof thickness were 26, 5, 5 and 7 cm respectively. Secondly, the propagation laws of light path for the light guide body were simulated with the light ray tracing method, and the design parameters of light guide body were optimized and selected in accordance with the light guide performance and economy, the radius and refractive index of light guide optical fiber were 3.5 mm and 1.6 respectively, the radius and thickness of planeconvex lens were 10.5 and 4.2 mm respectively, and the height and surface reflectivity of prism were 31.1 mm and 1.0, respectively. Lastly, the preparation process of hollow slab model was put forward for the solar pavement with light guide concrete, and the corresponding hollow slab specimens were prepared with the selfcompacting water proof concrete and the polymethyl methacrylate light guide bodies to test their mechanical properties and power generation efficiency. The results show that the maximum tensile stresses and the maximum vertical displacements of the hollow slab pavement structure increase significantly with the increase of arch width, but decrease gradually with the increase of floor thickness, arch height and roof thickness. The hollow slab specimen is small in the maximum vertical displacement and high in the mechanical strength. The light guide optical fiber radius and the planeconvex lens radius have significant influences on the total solar energy of single day transmission of light guide body, but the influences of planeconvex lens thickness, height and surface reflectivity of prism and refractive index of light guide optical fiber are smaller. The more the number of light guide bodies in the hollow slab specimen, the higher the working voltage and the maximum output power, so the corresponding light guiding and concentrating effects are better, but in order to ensure the mouldability and integral strength of hollow slab concrete, the number of light guide bodies should be selected as 81. The annual power generation per square meter of hollow slab specimen is about 50 to 90 kw·h, and its increased costs can be recovered in 5 to 10 years with better overall economy and fine social and environmental benefits. Therefore, the structure can meet the dual function requirements of driving and power generation to provide a kind of feasible scheme for the researches and applications of solar pavement. 5 tabs, 14 figs, 25 refs.

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更新日期/Last Update: 2020-01-17