Factory Direct Supply Outdoor Aluminum Truss Stand Lighting Trusses DJ Event Stage Platform

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Introduction to the Types of Aluminum Alloy Trusses

1. Triangular truss of aluminum alloy truss

When the node load is evenly distributed along the span, the axial force of the upper and lower chords of the triangular truss is large at the ends and gradually decreases in the mid-span. Triangular trusses are often used in tile roof trusses due to the large difference in internal forces of the chords and unreasonable material consumption. ladder truss

Compared with trapezoidal trusses and triangular trusses, the stress of the components has been improved, and it is easier to meet the process requirements of some industrial plants when used in roof trusses. If the upper chords of a trapezoidal truss are parallel, it is a parallel chord truss. The stress of the members is slightly worse than that of the trapezoidal truss, but the types of web members are greatly reduced, so it is often used in bridges and trestles.

2.Polygonal truss of aluminum alloy truss

Polygonal trusses are also called polygonal trusses. The upper chord rod lies on the quadratic parabola. If the upper chord is arched, the bending moments caused by loads between nodes can be reduced, but fabrication is more complicated. Under uniform load, the shape of the truss is similar to the bending moment diagram of a simply supported beam. The axial force of the upper and lower chords is uniform, the axial force of the web members is small, and less material is used.

3. Aluminum alloy truss hollow truss

Vierendeel trusses are basically polygonal trusses without oblique webs, with only vertical webs connected to the upper and lower chords. The axial force distribution of the member is similar to that of the polygonal truss, but under the action of asymmetric load, the bending moment at the end of the member changes greatly. The advantage is that there are fewer nodes that intersect, making construction and manufacturing easier.

4. Aluminum alloy truss bridge

1. Truss bridge is a form of bridge.

2. Truss bridges are commonly used in railways and highways, and are divided into two types: upper chord and chord bridge.

3. The truss is composed of upper chord, lower chord and web members. The web members are divided into oblique web members and straight web members. Due to the large length of the members, the connection between the members can be "fixed", but The actual bending moment is at the end of the rod. Usually very small, so design and analysis can be reduced to "articulation". In simplified calculations, the rods are both "two force rods" that bear either compression or tension.

4. Due to the large span of the bridge, the stiffness of the single truss "out of plane" is relatively weak, so it is necessary to support the single truss "out of plane". In bridge design, "out-of- plane" is generally designed in the form of trusses, giving the bridge good stiffness in both directions.

5. Some bridge decks are set on the upper chords, so the force is mainly transmitted through the upper chords; some bridge decks are set on the lower chords. Due to the need for out-of-plane stiffness, the upper chords still need to be connected to reduce the out-of-plane calculated length of the upper chords. Uh chords.

6. The truss chords bear greater stress in the mid-span section, which gradually decreases toward the support direction, while the web poles bear greater stress in the support attachments, and the web poles bear less stress in the mid-span section, even theoretically "zero poles".

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Product Parameters

Aluminum Alloy 6061-T6/6082-T6