Structural Characteristics:Steel Structure Engineering vs.Tubular Truss

Summary:Compared to steel spatial grid structures,tubular truss structures eliminate the need for longitudinal bottom chord members and the spherical nodes found in grid structures.This allows them to meet the requirements of various architectural forms.Their stability is consistent in all directions,and they lead to savings in material consumption.

Tubular truss structures evolved from spatial grid structures and possess unique advantages and practicality compared to grids,with the steel usage in the structure also being economical.

Compared to traditional open-section(H-beam and I-beam)steel trusses,tubular truss structures have a more uniform distribution of material around the neutral axis.This gives the cross-section good compressive,bending,and torsional load-bearing capacity along with high stiffness,all without requiring gusset plates,which simplifies the structure.

Crucially,tubular truss structures are aesthetically pleasing,easy to shape,and offer certain decorative effects.They exhibit excellent overall structural performance and high torsional stiffness,with an attractive appearance.Their fabrication,installation,repositioning,and hoisting are relatively straightforward.Roof trusses made from cold-formed thin-walled steel tubes are lightweight,stiff,economical in steel usage,and allow for full utilization of the material's strength.They are particularly economical when used in compression members and bracing systems governed by slenderness ratio.Currently,buildings utilizing this structure type primarily fall under the category of public buildings.

This structural type is characterized by its aesthetic appeal(can be constructed as flat,arched,or free-form curved shapes),convenience in fabrication and installation,good structural stability,high roof stiffness,and excellent economic efficiency.