Investigation of the impact on different type of toll plaza crash barriers by numerical approach
The construction of the highway network in Malaysia is growing rapidly along with the toll plazas facilities and safety constructions such as toll plaza barriers. However, the issue of accidents involving crash barriers at toll plazas turns into horrific nightmare for road users. It have been invest...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Published: |
Asian Research Publishing Network (ARPN)
2016
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8529/ |
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| Summary: | The construction of the highway network in Malaysia is growing rapidly along with the toll plazas facilities and
safety constructions such as toll plaza barriers. However, the issue of accidents involving crash barriers at toll plazas turns
into horrific nightmare for road users. It have been investigated that accidents at the toll plaza gates due to impacts of the
vehicles with concrete crash barriers with results in damage and fatalities. Therefore, the following study is to conduct a
simulation test for crash barrier Tensile Wire Fracture toughness (TWFT) system. TWFT system that used hot rolled
galvanized steel materials with small displacement rate of 4.0 x 10-4 m which was considered suitable as a replacement for
the existing concrete crash barrier. The data analysis were generated by the software Elfen. The graph of displacement,
direct shear and effective stress were generated as for the hot-galvanizes steel material model. Elastic energy, kinetic
energy and inelastic dissipated energy were compared between these two materials. The results shows that the hot-rolled
galvanized steel have the energy to return the material to its original form and the level of damage shows that the concrete
material failure are greater than the hot rolled galvanized steel materials. In conclusion, the material for a new alternative
crash barrier is likely to reduce the rate of death due to accident and damage with regards to road furnitures and vehicles. |
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