How to calculate the fastener type steel pipe scaffold
The provisions of 1.1.4 in steel pipe scaffold structure thin-walled steel structure design, involved in the weld connection, the stability coefficient of the axial compression members, should use the "technical specification for Cold-Formed Steel Structures" (GBJ18-87).1.1.5 provides for the design and calculation of scaffolding:(1) the calculation of the overall stability of the frame (can be converted into the calculation of the stability of the opposite pole);(2) checking the strength, stability and stiffness of horizontal bar;(3) calculation of strength and stability of attached and continuous wall;(4) anti overturning checking;(5) checking of foundation and supporting structure.
1.1.2 provides for the temporary structure of the scaffolding structure, the structure of the importance coefficient of gamma 0 take 0.9. ?The scaffold structure design of 1.1.3 on reliability requirements, considering that there is no enough statistical data accumulated by the situation, determine the probability limit state design, should be consistent with our historical experience, if using a single coefficient method was designed, the single safety coefficient should be satisfied: the strength calculation of K1 = 1.5 the stability calculation; K2 = 2. To this end, in the calculation of the introduction of the material strength of the additional coefficient of gamma 'm' or resistance to the addition of partial coefficient gamma 'R, gamma' R= gamma 0 gamma 'm=0.9 gamma' m.
1 "Uniform provisions" on the scaffolding structure design calculation method?1.1 requirements for design methods and design requirements1.1.1 stipulates that the scaffolding structure will be based on the probability theory based on the limit state design method (referred to as the probability limit state design method, that is currently China's engineering structure design method) for design.
