The truss is the process of developing from a simply supported beam to a truss-under the action of a uniform load, the simply supported beam is bent along the beam axis, and the shear force distribution and the cross-sectional normal stress distribution (divided into two triangles of the compression zone and the tension zone) are neutralized The axis is zero. The normal stress on the upper and lower edges of the section is large, and the beam height increases with the increase of the span. According to the distribution characteristics of the normal stress, in order to save the material, the aluminum truss stage manufacturer recommends to reduce its own weight, first form the I-beam-continue hollowing out, when there are several links with small cross-sections in the middle, it will develop into aluminum truss stage.

It can be seen that the truss is produced from the development of the beam structure. The essence of the aluminum truss stage manufacturer's truss is to use the geometric factors of the geometric characteristics of the beam section-when the moment of inertia I of the member section increases, the cross-sectional area can be reduced. When the beam height of the beam structure increases, its own weight increases a lot, and the truss structure does not have this disadvantage.

In actual work, due to its light weight, economical materials, and easy formation of various shapes to adapt to different uses, aluminum truss stage manufacturers suggest that trusses have become a widely used form, in addition to commonly used in roof structures, (we often Said roof), also used for belt conveyor trestle, tower, bridge, etc.

According to geometry, trusses can be divided into:

aluminum truss stage

1. Simple truss (composed of basic hinged triangles with binary bodies added in sequence);

2. Combined truss (composed of several simple trusses according to the simple composition rules of the geometrically invariant system);

3. Complex trusses (different from the first two other static trusses).

Divided by horizontal thrust

1. Non-thrust beam truss (compared with the corresponding solid beam structure, the hollowing rate is high, the upper and lower chords are bent, aluminum truss stage manufacturers indicate that the web members are mainly shear resistant, reasonable force, and economical in material); 2. Thrust arch truss (The arch ring and the upper structure have good integrity, convenient construction, strong spanning ability, and steel saving)