Seismic Brace Connection Integration with RISA-3D
RISAConnection version 6.0 has introduced the ability to design vertical brace connections per the seismic design provisions of the AISC 341-10...
RISAConnection now offers the ability to enter an eccentric work point for the braces on a Vertical Brace Chevron Connection.
The eccentricity may be horizontal, vertical, or both. These entries are in reference to the origin which lies at the intersection of the beam centerline and the gusset centerline.
Work point offsets may be positive or negative, depending on which direction (from the origin) you want to move the work point.
Quadrant 1: Positive Horizontal Eccentricity, Positive Vertical Eccentricity
Quadrant 2: Positive Horizontal Eccentricity, Negative Vertical Eccentricity
Quadrant 3: Negative Horizontal Eccentricity, Negative Vertical Eccentricity
Quadrant 4: Negative Horizontal Eccentricity, Positive Vertical Eccentricity
While the limit state checks will be the same, the calculated loads at the gusset will be different since they now will include the effect of the work point offset.
RISAConnection version 6.0 has introduced the ability to design vertical brace connections per the seismic design provisions of the AISC 341-10...
Vertical Diagonal Brace connections and Vertical Chevron Brace connections may be designed as Ordinary Concentric Braced Frame (OCBF) connections...
Vertical Diagonal Brace connections and Vertical Chevron Brace connections may be designed as Special Concentric Braced Frame (SCBF) connections...