Inelastic Seismic Response Comparison Of Two
15 And 25 Level Buildings Of Reinforced Concrete
With And Without Shear Walls
Author(s)
J. A. Avila & E. Martinez
Abstract
The inelastic seismic behaviour of two reinforced concrete buildings of 15 and
25 levels is compared with and without shear-walls: A case-frames and B case-frames
and shear walls, both directions. The resistance-seismic design and
vertical loads is made according to the requirements of the Mexico City Code
(RDF-93), satisfying the limit states of service (drifts ≤0.012) and resistance (Q
= 3): compressible zone (soft soil), B group (offices), and the concrete walls
density (wall area/ plant total area) in the superstructure (B case) is a little more
less than three and two percent for the transversal and longitudinal directions,
respectively, which is common in constructions after 1985 earthquake damages.
Inelastic seismic responses are determined with dynamic analysis step by step
with SCT-EW-85 record with and without over-resistance effects. Results show
the importance of the participation of the shear walls in order to reduce of the
magnitude of structural damages during severe seismic future events.
1 Introduction
Considering the damages of the last important earthquake occurred in Chile and
Mexico, it was noticed that those buildings with enough lateral stiffness, given
generally by shear walls, were the best behaved. This proves that when
designing, a special care must be taken to limit the lateral displacement in order
to reduce the probable damages in intense earthquakes. During 1985 Mexico
earthquake there were many structures between 7 and 17 levels that behaved
Keywords
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