Optimization design of C-post wire rope safety barrier

The paper presents a new type of wire rope safety barrier, which has many posts with C-shaped cross section and 5 ropes, by way of designing the shape of the post, the diameter of the rope, the arrangement and the number of ropes etc., on the basis of the form of structure of the most advanced foreign existing wire rope safety barrier — BRIFEN. And in order to realize that the barrier is designed as A class protective flexible safety fence, a series of finite element models are established, taking the thickness of the steel plate of C-post. After simulation experiment, discussion and analysis, the relation of the maximum dynamic deformation and the thickness of C-post is gotten. The research shows that the flexural strength of C-post increases and the corresponding maximum dynamic deformation decreases with the thickness of C-post increases, which providing an important reference for subsequent research and Vehicle Crash Test.