International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 07 Issue: 05 | May 2020 www.irjet.net p-ISSN: 2395-0072
© 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 662
Comparative Study on Seismic Analysis of (G+10) R.C.C, Steel and Steel-
Concrete Composite Building
Krunal P Suthar
1
, Arjun M Butala
2
1
PG Student, Department of Civil Engineering, U.V.Patel College of Engineering, Kherva
2
Assistant Professor, Department of Civil Engineering, U.V.Patel College of Engineering, Kherva
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Abstract - In India, reinforced concrete structures are in
greater demands in construction because the construction
becomes quite convenient and economical in nature. Steel-
Concrete composite constructions are now a days very popular
owing to their advantages over conventional concrete and
steel constructions. Hence the aim of the present study is to
compare seismic performance of a 3D (G+10) story RCC, Steel
and Composite building frame situated in earthquake zone IV.
All frames are designed for same gravity loadings. In RCC slab
are used in all three types buildings. The sections of Beam and
Column are made of either RCC, Steel or Steel-concrete
composite sections. In a Seismic analysis Equivalent static
method and Response Spectrum method are used. ETABS 2017
software is used and results are compared based on
fundamental time period, displacements, story drift, base
shear, story weight and story stiffness. Comparative study
based on seismic analysis concludes that, RCC construction is
best suited for low rise buildings among all the three types of
constructions, but in a High rise building construction are
Composite is a better options among the RCC and Steel
Structures.
Key Words: Seismic analysis, G+10 Building ETABS 2017,
Response Spectrum Method, Comparative Performance.
1. INTRODUCTION
Most of the building structures in India fall under the
category of low-rise buildings. So, for these structures
RC members are used widely because the construction
becomes convenient and economical in nature. But since the
population in cities is growing exponentially and the land is
limited, there is a need of vertical growth of buildings in
these cities. So, for the fulfilment of this purpose a large
number of medium to high rise buildings are coming up
these days. Now a days for these high-rise buildings, it has
been found out that use of steel-concrete composite
members in construction is more economic and effective
than using reinforced concrete members. The most
popularity and now a days economic of steel-concrete
composite construction in cities can be owed to its
advantage over the conventional reinforced concrete
construction.
RC frames are used in low rise buildings because loading is
nominal. But in high-rise and medium buildings, the
conventional reinforced concrete construction cannot be
adopted as there is less stiffness and framework, increased
dead load along with span restrictions, which is quite
vulnerable to hazards.
1.1 Objective of Study
1. To determine the effect of earthquake various
parameters like that Fundamental time period, story
stiffness, drift, displacement, maximum story shear,
weight of structures.
2. To reduce Story Drift and Displacement based on Seismic
analysis.
3. To increase Base Shear of the Structures.
4. To comparative performance on Seismic analysis by
response spectrum.
5. A construction Under the Effective solution of Structural
element.
1.2 Method of Analysis
The analysis is conducted for IS 1893(Part 1), 2016 specified
Equivalent static analysis and Response spectrum method.
a) Equivalent Static Analysis
This method is based on the assumption that whole of the
seismic mass of the structure vibrates with a single time
period. The structure is assumed to be in its fundamental
mode of vibration. But this method provides satisfactory
results only when the structure is low rise and there is no
significant twisting on ground movement. As per the IS 1893:
2002, total design seismic base shear is found by the
multiplication of seismic weight of the building and the
design horizontal acceleration spectrum value.
This force is distributed horizontally in the proportion of
mass and it should act at the vertical centre of mass of the
structure.
Design Seismic Base shear
The total design lateral force or design seismic base shear
(VB) along any principal
Direction of the building shall be determined by the
following expression
VB= Ah x W
Where,
Ah = Design horizontal seismic coefficient.
W = Seismic weight of the building