Railway barrier collision load
Railway barrier collision load
(OP)
Good day!
I have been assigned to design barrier for a railway. Here is the definition from our design criteria:
"For Piers and other guideway support element situated in less than 3m from the edge of adjacent highway shall be designed for horizontal static force of 1000kN, unless protected by suitable barriers. The force will be applied at an angle of 10 degrees from direction of road traffic at 1.2m above ground."
If take the perpendicular component of the force, it's around 174kN which generates 208.8kN-m moment at the base of 1.2m height. The barrier is 1.2m high, and 0.2m thick. What should be my design length as 208.8kN-m moment seems too large for a 1.2x0.2x1.0m dimensions?
I have been assigned to design barrier for a railway. Here is the definition from our design criteria:
"For Piers and other guideway support element situated in less than 3m from the edge of adjacent highway shall be designed for horizontal static force of 1000kN, unless protected by suitable barriers. The force will be applied at an angle of 10 degrees from direction of road traffic at 1.2m above ground."
If take the perpendicular component of the force, it's around 174kN which generates 208.8kN-m moment at the base of 1.2m height. The barrier is 1.2m high, and 0.2m thick. What should be my design length as 208.8kN-m moment seems too large for a 1.2x0.2x1.0m dimensions?






RE: Railway barrier collision load
What are the dimensions of the vehicle (presumably a train?) applying said load?
RE: Railway barrier collision load
What's below your bridge, highway or railway? If it's a highway there is probably a standard concrete barrier that can be used to protect the pier. If you're designing a crash wall that is integral with the pier you can spread the 1000kn. If you look at an AASHTO example for bridge parapet design for impact loads you'll see how it's done. It's based on yield line theory.