Acute angle steel and triangular space steel structure including the same

Abstract

The invention provides an acute angle steel and a triangular space steel structure including the same. The acute angle steel comprises an acute angle steel main body, the cross-section of the acute angle steel main body is in a < shape, the < shape is composed of a first side edge, a second side edge and an included angle between the first side edge and the second side edge, the length of the first side edge is A, the length of the second side edge is B, the included angle of the first side edge and the second side edge is alpha, A:B=0.4-1.0, and alpha is 40-80 degrees. The invention further provides the triangular space steel structure including the acute angle steel. According to the acute angle steel and the triangular space steel structure including the same, part of right angle steel is replaced by the acute angle steel, and conventional rectangular space steel truss and rectangular four-limb column composed of the right angle steel are replaced by triangular space steel truss and three-limb column. The acute angle steel and the triangular space steel structure including the same have the advantages of stable structure, simplified processing, convenient installation, wide adaptability, low cost and the like.

Description

technical field [0001] The invention relates to an acute angle steel and a triangular space steel structure comprising the acute angle steel. Background technique [0002] Angle steel is one of the main profiles of steel structure. The existing angle steels are all right-angle steels, such as figure 1 As shown in , the cross-section of space trusses and lattice columns is generally rectangular with four sides, such as figure 2 As shown, because the quadrilateral is an unstable planar figure, a diagonal line needs to be added to become a stable figure. Therefore, the quadrilateral space truss and lattice columns need to be attached at certain distances in the direction perpendicular to the main component for the space structure itself. stable components such as image 3 As shown, the quadrilateral space trusses and lattice columns need to add some members for the stability of the space structure itself in the direction perpendicular to the main member in addition to addin...

AI Technical Summary

Problems solved by technology

The existing angle steels are all right-angle steels, such as figure 1 As shown in , the section of the space truss and lattice column is generally rectangular with four sides, such as figure 2 As shown, because the quadrilateral is an unstable planar figure, a diagonal line needs to be added to become a stable figure. Therefore, the quadrilateral space truss and lattice columns need to be attached at certain distances in the direction perpendicular to the main component for the space structure itself. stable components such as image 3 As shown, the quadrilateral space trusses and lattice columns need to add some members for the stability of the space structure itself in the direction perpendicular to the main member in addition to adding force-transmitting members at the joints bearing the load and force transmission, as shown in Figure 4 As shown, it can be seen that the right-angle steel and the four-sided rectangular space steel structure including the right-angle steel have poor cross-section stability, waste materials, complex design, large amount of processing, transportation and installation, and high cost.

[0003] In order to improve the stability of the quadrilateral space truss and lattice column structure, when domestic transportation, welding and anti-corrosion manufacturing conditions are good, there is a method of using steel pipe welded joint plates instead of right-angle steel main rods for triangular space trusses and lattice columns, such as Figure 5 As shown, there is also a method of using steel bars to bend instead of right-angled steel webs to weld triangular space trusses with small spans, such as Image 6 As shown, but due to environmental reasons such as transportation, welding and anti-corrosion conditions, these two methods can no longer be adapted to the current overseas construction projects of the "Belt and Road", especially in construction projects in third world countries.

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