International Journal of Innovative Technology and Exploring Engineering (IJITEE)
ISSN: 2278-3075, Volume-9 Issue-3, January 2020
2928
Published By:
Blue Eyes Intelligence Engineering
& Sciences Publication
Retrieval Number: C8854019320/2020©BEIESP
DOI: 10.35940/ijitee.C8854.019320
Abstract: - An earthquake resisting elements are the
components that are introduced in a structure to improve its
seismic resistance and method of application of these elements are
said as techniques. Though structures are designed and detailed
as per code provision there remains some possibility of damage or
failure in strong earthquake. Performance of buildings may be
improved using earthquake resistant elements and techniques. An
earthquake produces seismic waves on earth surface of earth due
to releases of large energy from lithosphere which produces waves
in earth surface causing disturbance in structures resulting
failure of seismically weak structures. Seismic waves then travels
in horizontal and vertical direction. It causes horizontal and
vertical ground movement or vibration. These seismic waves cause
disturbances in in buildings. The disturbance caused depends on
position of building with respect to the center of disturbance called
as epicenter. Intensity of these seismic waves is maximum at
center and goes on reducing away from epicenter. Generally
horizontal waves are of stronger than vertical so buildings are
designed to horizontal seismic forces. These valves travel in any
direction but from design purpose it is resolved in two orthogonal
directions. Few constructional precautions may help to avoid or
minimize damage in buildings. Earthquake resistance of building
may be improved with proper design and construction of
structures. Some earthquake resisting elements like shear wall,
moment resisting frame or innovative techniques like base
isolation, or energy dissipation system are used in many high rise
buildings to avoid or minimize damage and hence loss of lives and
properties. Shear walls are RC member generally introduced in a
structure during construction in symmetrical manner. Base
isolators in the form bearings are placed between sub and super
structure to reduce stiffness of structures. Structures are braced
with seismic dampers in energy dissipation system. Composites
are used by mixing in concrete or as a warp. All these techniques
are reviewed herewith with special attention on shear walls.
Keywords: Earthquake resistance, shear wall, base isolation,
energy dissipation
I. INTRODUCTION
Seismic resistant building is that building which has designed
and constructed as per seismic resistant design and
constructed taking all care of avoiding casualties during
future possible earthquake. Though structures are designed
and constructed as per code provision, there are some
evidences of failure in past strong earthquake. Strength,
stiffness and energy dissipation behaviour are the major areas
where improvement can be made to make structures seismic
Revised Manuscript Received on January 05, 2020.
*Sanjivan Mahadik, Research Scholar, Department of Civil
Engineering, Dr.Babasaheb Ambedkar Technological University, Lonere,
India Email: sanjivanmahadik@gmail.com
S. R. Bhagat, Associate Professor, Department of Civil Engineering, Dr.
Babasaheb Ambedkar Technological University Lonere, India
Email: srbhagat@dbatu.ac.in
resistant. Several techniques have been developed and also
different composite materials are now in use for seismic
resistance improvement. This paper gives an insight on
seismic behaviour of structure and improvement techniques
used for seismic resistance in practice. Behaviour of shear
wall having medium height was studied by [1] to know
improvement in its seismic performance using different
inbuilt bracing maintaining same reinforcement percentage as
that of normal reinforced wall and it was observed that there is
significant improvement in seismic behaviour of these shear
walls using inbuilt bracing without increasing reinforcement.
A study of improvement of behaviour of shear wall with
introducing different inbuilt steel sections embedded in
concrete was made by [4] and it was investigated that, use of
encased profiles in shear wall improves strength, stiffness and
ductility if shear wall. Similar experience was for [15] in
testing of composite shear wall with encased profile placed in
seismic area in numerical analysis of composite shear wall [5]
while testing six walls with different encased profiles. Use of
steel tube filled with concrete as a embedded columns or truss
as a seismic improving arrangement in shear wall was studied
by [2] and in this research it was observed that, strength as
well as ductility of shear wall increases using that type of
arrangement. It also slower the stiffness degradation speed
which indicates improved resistance to seismic forces. Study
of behaviour of shear walls using light weight concrete with
was made by [14]. In this experiment different arrangement of
reinforcement was studied and it was found that, placing web
reinforcement in diagonal manner improves behaviour of
shear wall significantly. This arrangement transfers seismic
forces to foundation effectively than normal way of
reinforcement. It also reduces the stresses in compression
strut in shear wall. Study of behaviour of shear wall adding
GFRP in concrete was investigated by [8] in which it was
observed that, there is insignificant degradation and
reasonable stability of stiffness during reverse cyclic loading.
Negligible residual strain and drift within limit was observed
using GFRP in shear wall. GFRP concrete experiences god
confinement with concrete playing great role in improving
ductility of shear walls. FRP shear wall also experiences
fewer cracks than reinforced concrete shear wall due to
absence of yielding of reinforcement. Similar observation was
reported to [9] in experimental investigation of GFRP
reinforced shear wall. It was also observed that GFRP
reinforced shear wall attains their flexural capacities as that of
ordinary steel reinforced concrete shear wall. Also it behaves
in good manner in anchorage to base.
Earthquake Resisting Elements and Techniques
in High Rise Buildings
Sanjivan Mahadik, S. R. Bhagat