Failure Mechanism Of Shear-wall Dominant
Multi-story Buildings
Author(s)
S. B. Yuksel & E. Kalkan
Abstract
The recent trend in the building industry of Turkey as well as in many European
countries is towards utilizing the tunnel form (shear-wall dominant) construction
system for development of multi-story residential units. The tunnel form
buildings diverge from other conventional reinforced concrete (RC) buildings
due to the lack of beams and columns in their structural integrity. The vertical
load-carrying members of these buildings are the structural-walls only, and the
floor system is a flat plate. Besides the constructive advantages, tunnel form
buildings provide superior seismic performance compared to conventional RC
frame and dual systems as observed during the recent devastating earthquakes in
Turkey (1999 Mw 7.4 Kocaeli, Mw 7.2 Duzce, and 2004 Mw 6.5 Bingol). With its
proven earthquake performance, the tunnel form system is becoming the primary
construction technique in many seismically active regions. In this study, a series
of nonlinear analyses were conducted using finite element (FE) models to
augment our understanding on their failure mechanism under lateral forces. In
order to represent the nonlinear behavior adequately, The FE models were
verified with the results of experimental studies performed on three dimensional
(3D) scaled tunnel form building specimens. The results of this study indicate
that the structural walls of tunnel form buildings may exhibit brittle flexural
failure under lateral loading, if they are not properly reinforced. The global
tension/compression couple triggers this failure mechanism by creating pure
axial tension in the outermost shear-walls.
Keywords: nonlinear analysis, tunnel form building, reinforced concrete, shearwall,
cyclic loading, finite element.
Keywords
nonlinear analysis, tunnel form building, reinforced concrete, shearwall,
cyclic loading, finite element.
Related Book
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