Design specification for steel frame - supported structures

1, steel frame - support structure design needs to meet the relevant provisions of the current national standards, the design of steel structure high-rise also needs to meet the current national industry standard "technical Regulations for High-rise Civil Buildings steel Structure" JGJ99 provisions.  

2, steel structure high-rise center support can be used: cross cross inclined bar, herb-shaped inclined bar, single inclined bar and V-shaped inclined bar system;  The k-shaped diagonal bar system cannot be used;  The axis of the center support diagonal bar should meet the axis of the frame beam column.  

3. The support diagonal bar in the eccentric support frame needs to be connected with the beam at least at one end, and the energy dissipation beam segment is formed between the intersection point of the support and the beam and the column, or between another support and the intersection point of the beam in the same span.  

4, seismic grade is four, the support can use tie rod design, the slenderness ratio can not be greater than 180;  The support of the tie rod design needs to set two groups of monodiagonal bars in different inclined directions at the same time, and the difference between the cross section area of the monodiagonal bars in different inclined directions in the horizontal direction should not be greater than 10%.