Impact Factor:7.2
DOI number:10.1016/j.jclepro.2020.125283
Journal:Journal of Cleaner Production
Funded by:Natural Science Foundation of Hunan Province (Grant number: 2019JJ40385); National Natural Science F
Key Words:Vehicle induced vibration Floating concrete slab Piezoelectric Energy harvester Steel-spring
Abstract:Taking two (4 40) m continuous rail transit rigid bridges as practical examples, the train-SSFST (steelspring floating slab track)-bridge system was established to acquire the vehicle induced vibration responses on SSFST. Based on the concept of combing cymbal PE-VEH and multilayer stacks PE-VEH together, a kind of PE-VEH featured small size, lightweight, high bearing capacity and excellent efficiency in energy harvesting is proposed. The prominent highlight of the designed PE-VEH is the force amplifying mechanism composed of cover plates and bending plates, which is of great help in improving the energy harvesting efficiency. Secondly, the 6 multilayer piezoelectric stacks are favorable to meet the requirements of small dimensions when bearing the vehicle induced vertical steel-spring fulcrum forces. Dynamic simulation results showed that the optimum positions for the designed PE-VEH to be connected in series with the steel-springs is at the end of the floating concrete slab (FCS). Comparing with existed low-frequency PE-VEHs through evaluating by indicators of power density and NPD, the excellent energy output efficiency of the designed PE-VEH is demonstrated, and influence on the practical train-SSFSTbridge system is negligible as well. For the example bridge, with 144 PE-VEHs arranged on 36 blocks of FCS, the total energy power obtained would reach up to 31.4 kJ, enough to satisfy the normal use of intermittent collection and transmission components for wireless BHM.
Co-author:Yong Zheng, Guo Pengcheng
First Author:Wenqi HOU
Indexed by:Journal paper
Correspondence Author:Wei Guo
Document Code:2020.125283
Translation or Not:no
Included Journals:SCI
Links to published journals:https://www.sciencedirect.com/science/article/pii/S0959652620353270?dgcid=author