A Novel Approach For Seismic Analysis Of
Multi-storey Buildings
Author(s)
Y. Belmouden & P. Lestuzzi
Abstract
In this paper a novel equivalent planar-frame model with openings is presented.
The model deals with seismic analysis using the Pushover method for masonry
and reinforced concrete buildings. Each wall with openings can be decomposed
into parallel structural walls made of an assemblage of piers and a portion of
spandrels. As formulated, the structural model undergoes inelastic flexural as
well as inelastic shear deformations. The mathematical model is based on the
smeared cracks and distributed plasticity approach. Both zero moment location
shifting in piers and spandrels can be evaluated. The constitutive laws are
modelled as bilinear curves in flexure and in shear. A biaxial interaction rule for
both axial force – bending moment and axial force – shear force are considered.
The model can support any shape of failure criteria. An event-to-event strategy is
used to solve the nonlinear problem. Two applications are used to show the
ability of the model to study both reinforced concrete and unreinforced masonry
structures. Relevant findings are compared to analytical results from
experimental, simplified models and finite element models such as Drain3DX
and the ETABS finite element package.
Keywords: seismic analysis, unreinforced masonry, reinforced concrete,
structural wall, equivalent frame.
1 Introduction
Earthquakes are considered to be the major cause of structural failure of
buildings in Europe. Despite their rarity and moderate intensity, earthquakes in
the interior of northwest and central Europe have the potential to cause extensive
damage and associated financial losses, due to the vulnerability of the local
Keywords
seismic analysis, unreinforced masonry, reinforced concrete,
structural wall, equivalent frame.
Related Book
Other papers in this volume
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