Hainan Steel News: light steel portal frame purlins can cater to rigid Tied

In theory it should be possible. But we must calculate the stiffness requirements and meet members of the press bending bending member; in this case, its minor axis radius of gyration should be increased, usually selected from two back to back selection of C purlin bolts or welds together to form a similar-shaped the composite section.
Purlins cater to rigid tie rods, steel beam purlin connection is also important, as is usually the choice of M12 bolts, purlins is usually 2.0 ~ 3.0mm thick, even if the bolts shear meet, pressure plates can not be met. Therefore, the Service should be used in conflict-connected high-strength bolts (8.8), and can not be open long hole on purlins, because they can not transfer axial force on the purlins will open a long hole, it should be requirements conflict connector bolt holes (ratio bolt nominal diameter 1.5-2.0mm). Steel is easy to install on almost purlins are open long hole, in this case, is not appropriate to cater to rigid tie rod purlins, but should be used in steel, H-shaped steel or other section of the rod do the rigid tie rod. Hainan Steel