Load Bearing Calculation Of Various Steel Rails

The calculation of rail load-bearing capacity is to determine the maximum load that the rail can withstand and prevent overload. Here are some common methods for calculating the load-bearing capacity of steel rails:

The general calculation method is to determine the bearing capacity based on axle load and rail material. The specific steps are as follows:

a. Determining axle load: Axle load refers to the vertical force exerted on the steel rails by a single wheelset on a train or vehicle. According to the design specifications of the train or vehicle, the axle load can be determined.

b. Select appropriate rail material: Choose the appropriate rail material based on axle load and design speed. Different materials have different compressive properties and fatigue life.

c. Search for bearing capacity table based on rail material and axle load: Search for the corresponding bearing capacity table based on the selected rail material and axle load. The bearing capacity gauge is usually provided by railway standards or manufacturers.

d. Compare bearing capacity and actual load: Compare the found bearing capacity with the actual load to ensure that the bearing capacity of the rail is greater than the actual load.

2. Finite element analysis method: In computer-aided design and analysis software, the finite element analysis method can be used to simulate the behavior of steel rails under stress. By subdividing the rail structure and analyzing the stress and deformation of the rail, the bearing capacity of the rail can be determined.

3. CIRIA C689 "Design Principles for Cast and Beam Tracks" in the UK: This design principle provides a common method for calculating the load-bearing capacity of steel rails. It divides the bearing capacity into two stages: elastic and plastic, and calculates the bearing capacity based on factors such as the geometric parameters, material properties, and axle load of the rail.