possible solutions before and immediately after earthquake ...
possible solutions before and immediately after earthquake ...
possible solutions before and immediately after earthquake ...
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POSSIBLE SOLUTIONS BEFORE AND IMMEDIATELY AFTER<br />
EARTHQUAKE<br />
PROF. CLAUDIO MODENA<br />
Model FL<br />
The horizontal mass proportional growing load was applied towards the Cathedral’s square.<br />
(a) (b) (c) (d) (a) (b) (c) (d)<br />
(g) 0.3<br />
FACADE OUT OF PLANE<br />
Progression of the damage mechanism; deformation is<br />
magnified (x100)<br />
0.25<br />
d<br />
d<br />
c<br />
c<br />
0.2<br />
b<br />
b<br />
0.15<br />
0.1<br />
a a<br />
TOP OF THE TOWER<br />
NAVE<br />
0.05<br />
0<br />
0.000 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0.045 0.050<br />
DISPLACEMENT (m)<br />
The analysis stopped at a value of horizontal<br />
acceleration equal to 0.26 g. Defining the<br />
parameter k (structural stiffness) as:<br />
F<br />
m<br />
k <br />
the final k value, evaluated on the last<br />
two load<br />
steps, was approximately equal to 13% of the<br />
initial k, evaluated on the control point at the<br />
top of the dome lantern.<br />
POSSIBLE SOLUTIONS BEFORE AND IMMEDIATELY AFTER EARTHQUAKE
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