Civil Engineering Reference
In-Depth Information
Advances in Seismic Design Methodologies
437
(a)
Groundmotions
Displacements
(b)
(c)
Figure 9.32
Time-history analysis
failure in the structural members. Figure 9.34 displays, for a 20-story building
(Vamvatsikos and Cornell, 2002), the interstory drift profile for several acceleration
levels (0.01g, 0.1g and 0.2g). One can see that, for reduced intensities, the maximum
deformations are concentrated at the top of the frame. Contrary, as the intensity
increases, producing the structure collapse at 0.23g, the 3
rd
floor seems to accumulate
the largest amount of deformation.
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