1824 Concrete road barriers subjected to impact loads: An overview Abstract Muhammad Fauzi Bin Mohd. Zaina Concrete barriers prevent vehicles from entering the opposite lane b Hasan Jasim Mohammed and going off the road. An important factor in the design of concrete barriers is impact load, which a vehicle exerts upon collision with a aFaculty of Engineering and Built Envi- concrete barrier. This study suggests that a height of 813 mm, a base ronment, Universiti Kebangsaan Malay- width of 600 mm, and a top width of 240 mm are optimum dimen- sia. sions for a concrete barrier. These dimensions ensure the stability of bDepartment of Civil and Structural En- concrete barriers during vehicle collisions. An analytical and experi- gineering, Faculty of Engineering and mental model is used to analyze the concrete barrier design. The LS- Built Environment, Universiti Kebang- DYNA software is utilized to create the analytical models because it saan Malaysia. can effectively simulate vehicle impact on concrete barriers. Field tests are conducted with a vehicle, whereas laboratory tests are con- Corresponding author: ducted with machines that simulate collisions. Full-scale tests allow
[email protected] the actual simulation of vehicle collisions with concrete barriers. In
[email protected] the vehicle tests, a collision angle of 25°, collision speeds of 100 km per hour, and a vehicle weighing more than 2 t are considered in the http://dx.doi.org/10.1590/1679-78251783 reviewed studies. Laboratory tests are performed to test bridge con- crete barriers in static condition. Received 17.12.2014 Keywords In revised form 20.03.2015 Accepted 24.03.2015 Concrete barriers; LS-DYNA software; simulation; collision angle; Available online 02.05.2015 collision speed.