Safety Performance Evaluation of Ultra-High-Performance Concrete Semi-Assembled Barrier
Source abstract
Abstract
To address the limitations of traditional concrete barriers in practical applications, this study proposes a novel semi-assembled concrete barrier utilizing ultra high performance concrete (UHPC) as the barrier shell material. The thin shell of the barrier is prefabricated using UHPC and filled with normal concrete (NC) to form a protective structure. Finite element software is employed to simulate collisions between three models and the barrier, and the barrier safety is preliminarily assessed according to the Standard for Safety Performance Evaluation of Highway Barriers. A full-scale vehicle collision test validated the model, and an analysis was conducted. The results demonstrate that the established model exhibits a high accuracy. The peak value of the 25 ms collision force in this simulation can be used as the basis for static load design. None of the three vehicles exhibited overriding or riding phenomena nor did they deviate from their guide frames, and following collisions with three different vehicles, no overall damage was observed on the semi-assembled barrier. Occupant impact velocity (OIV) remained below 12 m/s, while occupant ride-down acceleration (ORA) stayed under 200 m/s2. The barrier meets SB protection-level requirements; thus, the findings can offer theoretical support for promoting the widespread adoption of this new type of barrier.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Transportation Safety and Impact Analysis · Structural Response to Dynamic Loads · Smart Materials for Construction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Underground Engineering, College of Mining Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan 030024, China
Shanxi Transportation Technology R&D Co., Ltd., Taiyuan 030032, China
Shanxi Transportation Research Institute Group Co., Ltd., Taiyuan 030032, China
Funding
Fundamental Research Program of Shanxi Province (Shanxi Transportation Holdings Group Co., Ltd.) · Key Laboratory of Highway Construction & Maintenance Technology in Loess Region, Ministry of Transport, PRC · 2023 Shanxi Graduate Student Innovation Project
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