Civil Engineering Reference
In-Depth Information
6.0
4.5
Only fire exposure
3.0
1.5
0
0
1
2
3
4
5
6
7
8
-1.5
Time (hours)
-3.0
Post-earthquake fire exposure
-4.5
-6.0
14.6
Axial deformation capacity response of a short column in the
ground fl oor.
Material degradation
Heat penetration
Material degradation and heat penetration
6.0
4.5
3.0
1.5
0
0
1
2
Time (hours)
3
4
5
-1.5
-3.0
-4.5
-6.0
14.7
Axial load capacity response of a short column in the ground
fl oor subjected to post-earthquake fi re showing effects of material
degradation/heat penetration on the response.
mechanical property was considered. In other words, preventing con-
crete from spalling or limiting the spread of cracks results in an effective
post-earthquake fi re protection for such buildings.
•
Due to partial/complete failure of some of the structural elements, loads
were redistributed to the adjacent elements. For instance in this case,
the loss of the two middle columns in Axis X1 caused increase of axial
load for the corner columns in the same axis. Therefore, a higher applied
load may be imposed on certain structural elements during a post-
earthquake fi re. The increased load would in turn reduce the fi re resis-
tance of these elements.
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