Conference Paper Experimental and Numerical Analysis Study of A Newly Developed Bridge Railing Using Extruded Aluminum-Alloy

ITOH, Yoshito  ,  YOSHINO, Akihiro  ,  SAKEMI, Shinji  ,  SATO, Ryoichi  ,  HIROHATA, Mikihito

A new type of bridge railing was developed using the extruded multi-hollow-type shape of aluminum-alloy to have the improved cost performance and appearance. First, static tests and numerical simulations were performed using model posts of railing made from aluminium-alloy plate with 70 mm thick to determine the multi-hollow-type sectional dimensions. Then, extruded posts of railing with flange width of 145 mm and 120 mm were tested and analysed to prove the performance following the specifications for the design of the railing in Japan. The static tests and the dynamic tests using heavy weight of 460 kg on extruded aluminum-alloy specimens were conducted to check the ultimate strength, energy absorption capacity and dynamic behaviour. The numerical analysis results of static and dynamic behaviours were almost consistent with the test results. Finally, the collision numerical simulation between the railing and a heavy truck with weight of 25 t, speed of 45 km/h and collision angle of 15 degree was performed. From the test and numerical analysis simulation results, the new type of post was proved to be available for different strength types of bridge railing changing the flange width when cutting the extruded long member.
6th International Conference on Advances in Experimental Structural Engineering, 11th International Workshop on Advanced Smart Materials and Smart Structures Technology. August 1-2, 2015, University of Illinois, Urbana-Champaign, United States

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