Two - way orthogonal space frame

[LFBJMB]

It consists of the intersection of two plane trusses parallel to the direction of the space frames building boundary. The intersection angle of the trusses in each direction is 90 degrees, that is, the upper and lower chords are placed positively

The lengths of the upper and lower chords are equal, and the upper and lower chords and The lengths of the upper and lower chords are equal, and the upper and lower chords and

It is greatly affected by the plane size and support conditions. The peripheral support is close to a square plane, the force is uniform, and the internal force of the rod is not very different. With the increase of the side length ratio, the one-way force characteristic is obvious

There are few types of rods, which can be assembled into a plane truss first, and then assembled together, which is more conducive to construction