What Is Steel Box Girder?

Steel box girders, also known as steel plate box girders, are generally used on bridges with large spans. The appearance is like a box, so it is called steel box girder.

Steel plate box girder is a structural form often used in engineering. In order to study the effect of diaphragm spacing on the distortion of simply supported steel box girder under concentrated load, simply supported steel box girder with different numbers of The distortion effect and rigid torsion effect under the load are obtained, and the curve of the maximum distortion effect with the number of diaphragms is obtained. A concentrated load is applied to the top of the web of the box girder, and the four conditions of distortion, rigid torsion, symmetrical bending and eccentric load are adopted. The load decomposition method is used for calculation.