Question

Compare interaction between structural frame and shear wall

Answer 1

IJETT ISSN: 2350 – 0808 | September 2014 | Volume 1 | Issue 1 | 115
Abstract— Several considerations govern the structural
configuration of buildings, with primary constraints provided by
functional and aesthetic requirements as desired by the owner and
executed by the architect. After deciding the structural system the
structural engineer must decide on location, distribution and
configuration of lateral force resisting elements both in plan and in
elevation. This step is of paramount importance in design process to
ensure the building perform as envisioned during seismic event. In
this paper seismic performance different locations of shear wall is
studied with respect to strength and stiffness. Finite element
software E-TABS has been used for modeling and analysis of
building. Seismic performance of various shear wall locations have
been compared and finally most efficient location is determined on
the basis of analysis results.
Keywords— E-TAB, Location, Seismic Performance, Shear Wall.
I. INTRODUCTION
Reinforced concrete structural wall is an important lateral
load resisting element. It is increasingly used by designer in
new structures as well as rehabilitation of existing one. Pure
frame for high rise building have almost disappeared, since
they are technically less efficient and not economically viable.
Shear wall are incorporated in conjunctions with steel or
reinforced concrete moment resisting frame to resist the
major portion of lateral load induced by an earthquake. The
majority of multistoried buildings are in fact shear wall frame
structure, since elevator shaft, stair well and central core units
of tall buildings are mostly enclosed by shear wall. In frame
with shear wall the wall carries a major part of seismic base
shear. The frame is designed to act as second line of defense
against earthquake, after extensive cracking and /or failure of
walls. Shear wall also contribute in resisting vertical load.
Behavior of building consisting of frame and shear wall is
more reliable than that of bare frame building, with plastic
hinges form in the beams not in the walls. In addition benefit
of reducing lateral sway in the building under seismic loading
can be available using shear wall.
When shear walls are situated in advantageous position in a
building, they can form an efficient lateral force resisting
system, while simultaneously fulfilling other functional
requirements.
II. METHODOLOGY
A G+ 15 symmetrical building frame with various locations
of shear wall is analyzed and their seismic resistance is
compared with respect to strength, displacement, shear force
and bending moment. Four Mathematical models are
prepared as shown in figure 1. In each of the model the