Seismic Response of Multi-Storied Buildings with Different Vibration Control Techniques-A Review

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017 www.irjet.net p-ISSN: 2395-0072
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SEISMIC RESPONSE OF MULTI-STORIED BUILDINGS WITH DIFFERENT
VIBRATION CONTROL TECHNIQUES-A REVIEW
Aswini A R1,Jayalekshmi RR2
1PG Student, Department of Civil Engineering, NSS College of Engineering, Palakkad, India
2Professor, Department of Civil Engineering, NSS College of Engineering, Palakkad, India
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Abstract - Structural vibration control has become a
workable technology to protect infrastructure against wind
and earthquake loads. Earthquake is the frequently occurring
vibration of earth surface which results in damaging of
structures and causes loss of lives. Performance-basedseismic
design has brought about new technological advances and
introduced innovative approaches to constructing seismic-
resistant buildings. To minimize the damage due to
earthquake on the structures active and passive vibration
control methods are there. Different passive vibration control
methods adopted in practice are reviewed in this paper.
Buildings with base isolators, withshearwallsandtunnelform
type buildings are considered.
Key Words: Vibration control, base isolator, shear wall,
tunnel form type buildings.
1. INTRODUCTION
Most of the world’s population livesinseismic hazardous
regions. Earthquakes are shaking of ground which is caused
by rapid release of strain energy stored in the earth’s crust.
Earthquakes are the natural calamitywhichcausesimmense
damages to the man-made structures on the earth and also
causes a great loss of life. Multi-storeyed buildings, if not
designed properly for lateral forces, may lead to complete
collapse and hence loss of property and life. When an
earthquake strikes, the structure moves laterally and
vertically caused by the surface ground motion induced by
the seismic waves. Typically the lateral motion is much
greater than the vertical motion. The mass, size and
configuration of a building or a structure indicate how the
structure will respond to an earthquakeevent.Anystructure
is to be designed to hold out against the lateral forces
induced on to it by the earthquake ground motion. To
achieve this, the lateral load resisting systems need to resist
all these lateral forces coming on to the structure during an
earthquake event. To perform well during an earthquake
event, a building must have the four main hallmarks thatare
simple-regular configuration, proper lateral strength,
stiffness and ductility.
Conventional design approach is not applicable in
situations when a structure must remain functional after
earthquake .Over the past couple of decades the astounding
developments in alternatedesignstrategieshavebeenmade,
which incorporate, earthquake protective systems in the
structure. The vibration control techniquescanbedividedin
to active and passive methods.This paper describes the
passive vibration control methods attempted in buildings.
2. SEISMIC CONTROL METHODS
The structural vibrations produced by earthquake or
wind loads can be controlled by variousfundamental means.
These conceptual approaches include modifying damping,
masses or shape, rigidities, and by providing passive or
active counter forces. Some methods of structural control
have been used successfully. In recent years, considerable
attention has been paid to research and development of
structural control systems. A large numbers of techniques
have been tried to produce better control against wind and
earthquake excitation. These can be classified into four
broad categories: passive control, activecontrol,semi-active
control and hybrid control. Passive control system is one
that does not require an external power source. All forces
imposed by passive control devices develop as direct
responses to the motion of the structure. Hence, sum of the
energy of both the device and the primary system will be
constant. Active control assures improved response to
passive systems at the cost of energy and more complex
systems. Active control system has been as any control
system in which an external power source is required to
provide additional forces to the structure in a prescribed
manner, by the use of actuators. The signals are sent to
control the actuators and determine the feedback from the
sensors provided on or through the structure. Due to the
presence of an external power source, the force appliedmay
either add or dissipate energy from the structure. Semi
active control performed on the benefits of active control
and the reliability of passive control, which makes it a much
more appealing alternative to traditional control scheme in
civil structures. Semi active control systems act on the same
principle of active control system but they differ inthattheir
external energy requirement is smaller. Hybrid systems act
on the combined use of passive and active control system.

For example, a base isolated structure which is equipped
with actuator which actively controls the enhancementof its
performance. Earthquake on the structures is reduced by
using base isolators, shear walls, dampers etc and minimize
the damage of structure. Different passive vibration control
methods are discussed here. They are base isolators, frames
with shear wall and tunnel form type buildings.
2.1Base Isolation
The protection of building from the damaging effects of
an earthquake by introducing some type of support that
isolates it from the shaking ground is called BaseIsolation.It
is a passive control device that is installed between the base
of the building and the foundation. Seismic isolationconsists
essentially of the installation of mechanisms whichdecouple
the structures and their contents from potentially damaging
earthquake-induced ground motions. The base isolation
system introduces a layer oflowlateral stiffnessbetween the
foundation and the structure. This isolation layer of the
structure increases the natural period which is much longer
than its fixed base natural period. This lengthening of the
period can reduce the pseudo-acceleration and hence the
earthquake induced forces in the structure.
Fig. 1Elastomeric systems and Sliding Type Base
Isolator
2.1.1 Types of Seismic Isolation Bearings
Isolation systems can be classified into two different
categories
i) Elastomeric systems﴾Figure 1﴿
 Low –Damping Rubber Bearing.
 High-Damping Rubber Bearing.
 Lead –Rubber Bearing.
ii) Sliding type isolating systems﴾Figure 1﴿
 Isolator without re-centering capacity
(Flat sliding Bearing).
 Isolator with re-centering capacity
(Spherical Sliding Bearing).
The base isolation technique has been used successfully
worldwide in many buildings for earthquake protection. A
seismic base isolation system is typically placed at the
foundation of a structure. By means of its energy absorption
capability and flexibility, the isolation system partially
reflects and partially absorbs some of the earthquake input
energy before this energy transmitted to the structure. It
comprises of basically inducing a mechanism which
decouples the sub-structure from the super structure
resulting in decreased response of the structure.
2.2 Shear Wall
Reinforced concrete (RC) buildings often have vertical
plate-like RC walls along with slab, beam and column called
Shear Walls in addition to slabs, beams and columns.
Wind and seismic loads are the most common loads that
shear walls are designed to carry. Thesewallsgenerallystart
at foundation level and are continuous throughout the
building height. Shear walls provide large stiffness and
strength to buildings in the direction of their orientation,
which significantly reduces lateral sway of the building and
thereby reduces damage to structure and its contents.Shear
walls in buildings must be symmetrically located in plan to
reduce ill-effects of twist in buildings (Figure 2). They could
be placed symmetrically alongoneorbothdirectionsinplan.
Shear walls are more effective when located along exterior
perimeter of the building – sucha layoutincreasesresistance
of the building to twisting. Door or window openings can be
provided in shear walls, but their size must be small to
ensure least interruption to force flow through walls.
Moreover, openings should be symmetrically located. RC
shear walls have high stiffness. Shear wall acts as a deep and
slender cantilever. For efficient performance of building
position of shear wall in an ideal location is very important.
The shear wall can be either open section or closed sections
around stair cores and elevators. Shear walls are oblong in
cross-section, i.e., onedimensionofthecross-sectionismuch
larger than the other. While rectangular cross-section is
common, L- and U-shaped sections are also used (Figure 3).

.
Fig 2 Location of shear wall
Fig 3 Different geometries of shear wall
Thin-walled hollow RC shaftsaroundthe elevatorcoreof
buildings also act as shear walls, and should be taken
advantage of to resist earthquake forces. If shear walls are
provided along only one direction, a proper grid of beams
and columns in the vertical plane which is called as the
moment-resistant frame must be provided along the other
direction to resist strong earthquake effects.
2.3 Tunnel form type buildings
Multi-story RC (reinforced concrete) tunnel form
buildings have been increasingly employed for mass
construction industry in many countries. Tunnel form is a
formwork system that allows the contractor to cast walls
and slabs in one operation in a daily cycle﴾Figure 4﴿.This
system is very much attractive for the medium to high-rise
buildings with repetitive plans due to good performance
during past earthquake,industrializedmodularconstruction
technique, low cost and also saving in construction time.
Reinforced concrete shear walls(RCSW)dominantbuildings
are constructed using a tunnel-form technique for many
reasons. It is very attractive for a medium to high-rise
buildings with repetitive plans. Also it is used for the
construction of multi-unit housing, single-familyresidences,
hotels, townhouses, military housing, prisons, and some
warehouse applications. The simultaneous casting of walls
and slabs results in monolithic structures unlike any other
frame-type RC buildings. RCSW are used in multi-story
buildings due to their good performance during strong
seismic ground motions, because they provide good lateral
stability and act as vertical cantileversinresistinghorizontal
external forces. Also they provide nearly optimum means of
achieving stiffness, strength and ductility. These three
objectives are the basic criteria that the structure should
satisfy. During construction, walls and slabs, having almost
the same thickness, are cast in a single operation. Tunnel
form buildings gain increased seismic performance by
retarding plastic hinge formations at the most critical
locations, such as slab–wall connections and around wall
openings. The main components of this system are flat plate
slabs and walls. Walls in tunnel form buildings have two
functions: resisting lateral loads as well as carrying vertical
loads. Tunnel form buildings diverge from other
conventional RC (reinforced concrete)structuresduetolack
of beams and columns in their structural components. In
these buildings, all of the vertical load carryingmembersare
made of shear walls and floor system. In addition, in tunnel
form buildings, slabs and walls are made of thin concrete
plates and rebars should be placed in one layer.
Fig. 4 Tunnel form construction

3 LITERATURE REVIEW
Various literature reviewed on vibration control of
structures are presented in this section. A number of works
have been performed on seismic vibration control of
structures. A review of literatures is presented in brief,
summarizing the work done recently by different scholars
and researchers.
Balkaya and Kalkan (2003) examined the applicability
and accuracy of inelastic pushover analysis in predictingthe
seismic response of tunnel form building structures. The
contribution of slab-wall interaction and transverse walls
during the 3D action, the effects of 3D and 2D modeling on
the capacity-demand relation, diagram flexibility, torsion
and damping effects were investigated. 2-story and 5-story
building models having similar plan and sections were
analyzed by utilizing the 3D and 2D finite element models
developed by iso parametric shell element. In general, total
resistance capacities of the three dimensionally analyzed
structures were observed to be higher than that of two
dimensionally modeled cases.
Tavafoghi.A and Eshghi.S(2008) investigated the
seismic behavioroftunnel formconcretebuildingstructures.
The fundamental periodandtheproposedbehaviorfactor (R
factor) are used to compute the design base shear of a
structure. This study showed that the building height can be
considered as the main parameterinestimatingformulas for
fundamental period of tunnel form buildings. The orders of
the first three modes of structures remain unchanged for
building with different heights.
Gomase O.P and Bakre S.V ﴾2011﴿studiedperformance
of non-linear elastomeric base-isolated building structure.
The analysis of fixed base and base isolated 3-D four storey
building is performed. An exhaustive study has been
performed on the performance of base isolated structures.
The behavior of building structure resting on elastomeric
bearing is compared with fixed base structure under
maximum capable earthquake. Seismic base isolation can
reduce the seismic effects and therefore floor accelerations,
inter-story drifts, and base shear by lengthening the natural
period of vibration of a structure via use of rubber isolation
pads between the foundation and the columns. However, in
case the deformation capacity of the isolators exceeded,
isolators may rupture or buckle. Uniform Building Code-97,
is widely used in design of base isolation systems which
contains provisions accounting for near-fault earthquake
effects.
Eshghi.S and Tavafoghi.A﴾2012﴿ conducted an
experimental study on seismic behaviour of tunnel form
building structures. Experimental study was carried out to
decrease the uncertainty of linear and nonlinear behaviour
of the tunnel form buildings. The experimental study
consists of testing the twothree-story1/5-scaleofthetunnel
form building. Some of forced vibration tests were done and
both models were subjected to quasi-static cyclic lateral
loading. The results were used to estimate the period of
mode shape and to evaluate the fundamental period of
cracked structures. The specimens had brittle failure
mechanism that occurred in the shear walls above the
foundation connections. The rebars of shear walls ruptured
suddenly and crushing of the concrete were not observed.
Haider S et al (2014) examined the effect of shear walls
on seismically isolated buildings of variable geometric
configurations. Multi-story hypothetical reinforcedconcrete
buildings of variable geometric configurations (vertically
irregular, symmetrical, horizontally irregular); with and
without shear walls; base isolated via high damping rubber
bearing and friction pendulum systems, are analyzed using
the finite element method under seismic load function. The
results showed that, inclusion of shear walls has minor
effects on the maximum acceleration responses and total
base shear whereas, a considerable reduction in the
maximum relative displacementisreported. Theinclusion of
shear walls has negligible effect on total base shear and
maximum acceleration of the isolated buildings.
BinuSukumar et al (2015)carried out Non-Linear
Analysis of Frames with and without Structural Wall
Systems. A typical low rise building is considered with two
types of modeling for the structural wall, one with
equivalent column element and other with multi-layer shell
element . The results obtained were compared with a
normal frame building designed to with stand lateral loads
without shear wall. The building was modeled and analysed
using SAP2000 (V-17.3). From the analysis, it was observed
the pushover curves observed for equivalent column
elements and multi-layered shell element are almost equal.
Hence, the modelling of structural wall as a column element
can predict the behaviour similar to multi-layered shell
element. In comparison with LLRS lateral load resisting
system building, building with structural walls can with
stand lateral loads without much deformation. The
monotonic pushover curves for the shear wall modelled
using multi-layered shell element and by equivalent column
were almost similar. Any one of the method can be used for
modeling the shear wall.
Anusha R Reddy and V Ramesh ﴾2015﴿ gives details
about the seismic analysis of base isolated building in RC
framed structures. Two building’s are considered first
structure is G+13 storey building and second is G+5 storey
building which is analyzed in E TABS 13.2.1 software. Lead
rubber isolator are provided to both the structures and then
time history analysis and linear response spectrum are
carried out for both fixed base and base isolated buildings
under zone v and soil type II i.e. medium soil (accordingtoIS
1893(part 1):2002). The mode period, acceleration, base
shear, and displacement are compared for response
spectrum and time history analysis for fixed base and base
isolated buildings. It is investigated that the mode period is
increased after providing rubber isolator due to the flexible
property of the isolator. When compared with fixed base
structure, the base shear is reduced in base isolated
structures, thus the response of building is good in base
isolated structures than fixed base structures.
JunwonSeo et al (2015) studied the seismic
performance of multistory reinforced concrete moment

resisting frame structure with shear walls. This paper is
intended to evaluate the seismic performance of a G+12
story reinforced concrete moment-resistingframestructure
with shear walls using 3D finiteelement modelsaccordingto
some seismic design regulations. Response spectrum
analysis and nonlinear time-history analysis were used.
Seismic fragility curves for each floor of the structure were
generated using the ratios from the time history analysis
with the FEMA guideline so as to evaluate their seismic
vulnerability. The maximum displacements for both
response spectrum and nonlinear time history analyses
increased along the height of structure as the story level of
the structure was higher.Thenonlineartimehistoryanalysis
provided 28.1% and 54.0% greater values in maximum
displacements and drift ratios compared to those for the
response spectra analysis.
Syed Farroqh Anwar et al (2016) conducteda studyon
soil structure interaction and base isolated system for
seismic performance of structures resting on differenttypes
of soils. This aims to determine the significanceofusingBase
Isolation as a technique to withstand the seismic forces. The
comparison is mainly done between structures with soil
structure interaction effects and base isolated structures.
The modeling and analysis was done using computer
program SAP2000 v18. The method of analysis was Fast
Nonlinear Analysis. There are 18 models whichareanalyzed
in which there are symmetric and asymmetric in plan
models, which are modeled and analyzed as fixed base
models, models with the consideration of soil structure
interaction, and models with base isolation. These models
are assumed to be resting on three soil types namely stiff
clay, limestone, and loose sand. All the models are G+13
storey. Considering soil structure interaction for structures
resting on medium (stiff clay) and soft soils (loose sand) is
more significant when compared to structures resting on
hard soil (limestone) as there is not much difference in the
response of structures resting on hard soil with and without
the consideration of soil structure interaction.Baseisolation
system is found to be most effective for structuresresting on
hard soil (limestone) when compared to structures resting
on medium soil (stiff clay) and soft soil (loose sand).
4 SUMMARY AND CONCLUSION
Earthquakes can create serious damage to structures.
Structures already built are vulnerable to future
earthquakes. From the literatures it is found that many of
them explains the comparative study of building with and
without isolator for different number of stories. Linear
response spectrum and time history analysis are carriedout
for both fixed base and base isolated buildings. Relative
storey displacement &storey drift has been reduced in the
case of isolated buildings. Some literatures show the
comparison of buildings with and without shear wall and
also they examined the effect of shear walls on seismically
isolated buildings of variable geometric configurations.
Seismic behavioral and experimental studies of tunnel form
concrete building structures are also carried out. The
essence of experimental and analytical studies available in
literature sheds light on the need for further comparative
and parametric studies on the tunnel form buildings. From
the literatures it is found that there is no comparative study
between the tunnel form typebuildingwiththeconventional
building with base isolated systems and building with shear
walls. Further detailed studies are required for better
understanding of seismic performance of these buildings.
REFERENCES
[1] Abdul Hamid N. H and Masrom.M.A(2012), “Seismic
Performance of Wall-Slab Joints in Industrialized
Building System (IBS) Under Out-Of-Plane Reversible
Cyclic Loading” IACSIT International Journal of
Engineering and Technology, Vol. 4, No. 1.
[2] Angitha Sasidharan, Mohammed Aslam(2015)
“Comparative Study of Tunnel Form and Framed
Buildings by Dynamic Analysis” International Journal of
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[3] Anudai.S.A, Hamid.N.H(2016), “Comparative Study of
Seismic Behavior of Tunnel Form Building Between
Experiment and Modeling”SpringerScience+Business
Media Singapore.
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Base Isolated Building in RC Framed Structures”
International Journal of Civil and Structural Engineering
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Seismic Response of Multi-Storied Buildings with Different Vibration Control Techniques-A Review

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