rsbmusicguy
Structural
- Mar 21, 2019
- 44
Hey all,
See my question above, a colleague and I are going back and forth on the issue. Note my bridge is a through girder bridge with the deck of the bridge lying below the neutral axis of the through girder. Although knee braces are present at the inside face of the girder, I am arguing that the knee braces should not be considered as a brace point for the top flange and only be taken as transverse stiffeners for the through girder.
I found a good paper on the subject, read through and looks like they concluded (on Page 11 of 13):
"The system is not a true braced condition, it more like a system of connected frames. The top flanges of the TPGs are relatively free to rotate with no true means to restrain the out of plane distortion (e.g. struts, cross bracing)."
Can anyone argue this or have more experience on the subject?
Thanks,
RSB
See my question above, a colleague and I are going back and forth on the issue. Note my bridge is a through girder bridge with the deck of the bridge lying below the neutral axis of the through girder. Although knee braces are present at the inside face of the girder, I am arguing that the knee braces should not be considered as a brace point for the top flange and only be taken as transverse stiffeners for the through girder.
I found a good paper on the subject, read through and looks like they concluded (on Page 11 of 13):
"The system is not a true braced condition, it more like a system of connected frames. The top flanges of the TPGs are relatively free to rotate with no true means to restrain the out of plane distortion (e.g. struts, cross bracing)."
Can anyone argue this or have more experience on the subject?
Thanks,
RSB
