To systematically understand the development of pavement power generation technologies and promote the rapid development of green and smart roads enabling energy saving and emission reduction,the CiteSpace software was used to conduct a quantitative analysis of relevant literature on the pavement power generation technologies from 2012 to 2022.The research progresses,advantages,disadvantages,and applicabilities of three main technologies,namely the photovoltaic power generation,thermoelectric power generation,and piezoelectric power generation,were compared.The fundamental theories of converting solar energy,thermal energy,and mechanical energy into electrical energy were introduced.The pavement design methods of photovoltaic and thermoelectric power generation technologies were summarized.The selection of power generation materials for piezoelectric power generation technology,the design of piezoelectric transducer device,and the structural design of integrated power generation pavement system were discussed.The future research trends of pavement power generation technologies were prospected.Based on the existing research foundations of pavement power generation technologies,some suggestions were put forward for the development of green and smart roads and the demand for the integrated development of transportation and energy from the perspectives of material,structure,construction,operation and maintenance.Research results show that most studies on the photovoltaic power generation focus on the macro-level analysis of the feasibility of solar pavements,providing power supply for transportation infrastructures and alleviate the heat island effect.However,there still is much room for optimization in the research on mechanical properties and power conversion efficiency of photovoltaic pavement.Thermoelectric power generation mainly relies on the temperature difference of pavement structure.It can realize all-weather power generation with stable energy harvesting.However,it currently has a disadvantage of low efficiency.At the same time,it is necessary to focus on the problem of mismatch between mechanical properties of thermoelectric heat conduction devices and asphalt pavement.Piezoelectric power generation has a high energy harvesting density,good sustainability,and promising prospects.However,some key issues have not been well solved,such as the durability of piezoelectric material,compatibility and stiffness matching between piezoelectric transducer elements and pavement,and structural stability and durability of the integrated pavement of piezoelectric power generation system,which still require further research.3 tabs,24 figs,73 refs.
pavement engineeringpavement power generation technologyphotovoltaic power generationthermoelectric power generationpiezoelectric effect
NETL
NSTL
万方数据
