Analysis of anti-collision performance of a new assembled rolling guardrail. (January 2023)

• Record Type: Journal Article
• Authors: Yao, Juncheng; Zhang, Jinpeng; Huang, Liang; Xu, Jianguo; wang, Bo
• Is Part Of: Structures. Volume 47(2023)
• Page Start: 246
• Page End: 259
• Publication Date: 2023-01
• Subjects: Vehicle -- Collision -- Assembled -- Rolling guardrail -- Anti-collision performance; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2022.11.068
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: Bridge guardrails play an important role in vehicle safety. Bridge guardrails frequently use concrete guardrails and beam-column guardrails. However, they have the disadvantages of poor buffering effect, being difficult to replace after damage, and being easy to cause damage to the bridge. A novel style of assembled rolling guardrail is presented in light of these drawbacks. In this research, a vehicle-guardrail collision numerical model is built in LS-DYNA. Subsequently, the performance of Beam-column guardrail (B-C.G), Assembled Guardrail (A.G), and Assembled rolling guardrail (A-R.G) is evaluated. The findings demonstrate that the A-R.G satisfies the specification's requirements, can increase the construction efficiency, and, in contrast to the conventional beam-column guardrail, essentially does not cause damage to the bridge. Additionally, it performs better than the other two types of guardrails. Compared with the A.G and the B-C.G, the A-R.G has better energy absorption effect, steering effect. Moreover, the A-R.G significantly reduces the acceleration of the vehicle. The A-R.G dramatically lessens guardrail and vehicle damage, enhances the guardrail's structural integrity, and increases passenger safety.