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A platform for research: civil engineering, architecture and urbanism
Dynamic impact of automated truck platooning on highway bridges
Graphical abstract Display Omitted
Highlights The dynamic impact on bridge response induced by truck platooning is studied. Many highway bridges are at potential risk of resonance posed by truck platooning. Code-specified dynamic load allowances may not be reasonable when resonance occurs. Increasing the inter-truck spacing does not necessarily reduce the overall load effect. A traffic strategy aiming to reduce the adverse impact on highway bridges is proposed.
Abstract Automated truck platooning (ATP) has attracted growing attention since it can significantly promote energy conservation and increase transport efficiency by arranging moving trucks at close distances. Currently, the ATP has been widely implemented, but its effects on bridges have not been considered in the original design of many existing highway bridges. Hence, these bridges may not be capable of sustaining the load of ATP. Some assessments have been conducted, but little attention has been paid to the ATP-induced dynamic impact, which is more critical to the design and evaluation of a bridge. In this paper, this problem was investigated using both theoretical analysis and numerical simulation. The theoretical derivation was conducted to investigate the ATP-induced bridge vibration, particularly in resonance conditions. It was found that typical highway bridges could be at a high risk of resonance induced by the ATP moving at normal speeds. For more comprehensive assessments, numerical simulations were performed based on a refined vehicle-bridge interaction (VBI) simulation system, and the effect of critical parameters were studied, including vehicle speed, inter-truck spacing and so forth. Results show that the dynamic impact on the bridge induced by ATP can be significantly larger than that caused by a single truck due to the superposition effect. Such effect is caused by the combination of speed and inter-truck spacing, it can also be greatly affected by the number of trucks and road surface conditions. The simulation results also show that the current code-specified dynamic load allowance (DLA), particularly for the Chinese code and Eurocode, may not be sufficiently capable of characterizing the dynamic effects of ATP loads. Accordingly, a strategy of arranging ATP crossing highway bridges was proposed to reduce the adverse dynamic impact.
Dynamic impact of automated truck platooning on highway bridges
Graphical abstract Display Omitted
Highlights The dynamic impact on bridge response induced by truck platooning is studied. Many highway bridges are at potential risk of resonance posed by truck platooning. Code-specified dynamic load allowances may not be reasonable when resonance occurs. Increasing the inter-truck spacing does not necessarily reduce the overall load effect. A traffic strategy aiming to reduce the adverse impact on highway bridges is proposed.
Abstract Automated truck platooning (ATP) has attracted growing attention since it can significantly promote energy conservation and increase transport efficiency by arranging moving trucks at close distances. Currently, the ATP has been widely implemented, but its effects on bridges have not been considered in the original design of many existing highway bridges. Hence, these bridges may not be capable of sustaining the load of ATP. Some assessments have been conducted, but little attention has been paid to the ATP-induced dynamic impact, which is more critical to the design and evaluation of a bridge. In this paper, this problem was investigated using both theoretical analysis and numerical simulation. The theoretical derivation was conducted to investigate the ATP-induced bridge vibration, particularly in resonance conditions. It was found that typical highway bridges could be at a high risk of resonance induced by the ATP moving at normal speeds. For more comprehensive assessments, numerical simulations were performed based on a refined vehicle-bridge interaction (VBI) simulation system, and the effect of critical parameters were studied, including vehicle speed, inter-truck spacing and so forth. Results show that the dynamic impact on the bridge induced by ATP can be significantly larger than that caused by a single truck due to the superposition effect. Such effect is caused by the combination of speed and inter-truck spacing, it can also be greatly affected by the number of trucks and road surface conditions. The simulation results also show that the current code-specified dynamic load allowance (DLA), particularly for the Chinese code and Eurocode, may not be sufficiently capable of characterizing the dynamic effects of ATP loads. Accordingly, a strategy of arranging ATP crossing highway bridges was proposed to reduce the adverse dynamic impact.
Dynamic impact of automated truck platooning on highway bridges
Ling, Tianyang (author) / Cao, Ran (author) / Deng, Lu (author) / He, Wei (author) / Wu, Xin (author) / Zhong, Wenjie (author)
Engineering Structures ; 262
2022-04-24
Article (Journal)
Electronic Resource
English
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