IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 13, Issue 4 Ver. IV (Jul. - Aug. 2016), PP 22-32 www.iosrjournals.org DOI: 10.9790/1684-1304042232 www.iosrjournals.org 22 | Page Comparative inelastic analysis of RCC and steel-concrete composite frame S.R.Sutar 1 , P.M.Kulkarni 2 1 P G Student, Civil Engg. Department, KJ’s Trinity College of Engineering & Research, Pune, India 2 Asst. Prof., Civil Engg. Department, KJ’s Trinity College of Engineering & Research, Pune, India Abstract: The majority of building structures are designed and constructed in reinforced concrete which are mainly depends upon availability of the constituent materials and the level of skill required in construction, as well as the practicality of design codes. R.C.C is no longer economical because of their increased dead load, hazardous formwork. However composite construction is a new concept for construction industry. The use of modern composite systems, allowing the erection of multi-story structural frames to proceed at pace. The reviews shows that, the composite structures are best suited for high rise buildings compared to that of steel and reinforced concrete structures. Unfortunately, many of the available nonlinear analysis programs are only suitable for modeling traditional steel or reinforced concrete systems and are not directly applicable to composite frames. Part of this work presented herein is aimed to understand the nonlinear behavior of composite frame using ETAB 9.7. Keywords: composite column, composite frame, nonlinear static analysis, pushover analysis I. Introduction Recent trends in construction industry is to use of steel, reinforced concrete and composite steel- concrete member which are functioning together and termed as composite, mixed or hybrid systems. Such systems make use of each type of member in most efficient manner to maximize the structural and economic benefit. An additional benefit provided by composite frame is derived from their excellent fire-resistant properties. Over the past twenty years the composite RCS moment frame systems have been used in the US and Japan. Extensive research is currently underway to better understand the behavior of such frames. Much of this research aims at experimentally investigating the characteristics of joints between steel and reinforced concrete members and understanding the behavior of mixed assemblies. On the other hand; System behavior has been much less researched and is not yet well understood. In Japan, however, the superior earthquake resistant properties of composite beam-columns have been long recognized and have become a commonly used form of construction in that region. In view of the growing popularity and use of composite systems, there is need for analysis of frame. And nonlinear analysis is a suitable tool for better understanding the behavior of systems, especially when subjected to dynamic excitation, unfortunately, many of the available analysis programs are only suitable for modeling traditional steel or reinforced concrete systems and are not directly applicable to composite frames. Part of this work presented herein is aimed to understand the nonlinear behavior of composite frame using ETAB v9.7. II. Objectives Following are the objectives of proposed work 1. To perform inelastic i.e. nonlinear static pushover analysis of Steel-Concrete Composite frame (encased rolled steel section in concrete and concrete filled steel section) using E-tab 9.7. 2. To study the performance of steel-concrete composite section w.r.t. different parameters such as story drift, story displacement, base shear, shear force etc. 3. To study the hinge formation during the performance of composite frame to verify strong column weak beam behavior of the members. III. Elements Of Composite Multistoried Buildings The primary structural components used in composite construction consists of A. Composite deck slab B. Composite beam C. Composite column D. Shear connector
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IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE)
e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 13, Issue 4 Ver. IV (Jul. - Aug. 2016), PP 22-32
Comparative inelastic analysis of RCC and steel-concrete
composite frame
S.R.Sutar1, P.M.Kulkarni
2
1P G Student, Civil Engg. Department, KJ’s Trinity College of Engineering & Research, Pune, India 2Asst. Prof., Civil Engg. Department, KJ’s Trinity College of Engineering & Research, Pune, India
Abstract: The majority of building structures are designed and constructed in reinforced concrete which are
mainly depends upon availability of the constituent materials and the level of skill required in construction, as
well as the practicality of design codes. R.C.C is no longer economical because of their increased dead load,
hazardous formwork. However composite construction is a new concept for construction industry. The use of
modern composite systems, allowing the erection of multi-story structural frames to proceed at pace. The
reviews shows that, the composite structures are best suited for high rise buildings compared to that of steel and
reinforced concrete structures. Unfortunately, many of the available nonlinear analysis programs are only
suitable for modeling traditional steel or reinforced concrete systems and are not directly applicable to
composite frames. Part of this work presented herein is aimed to understand the nonlinear behavior of
Fig.22. Maximum story drift (mm) of RCC & composite
Fig. 18 shows that the self weight of the composite frame is reduced up to 30 % as compared with RCC
frame.likewise fig.19 & fig. 20 shows that the base shear of composite frame is maximum of 20-50 % as
compared to RCC frame.
From pushover analysis which represent in fig.21 & fig. 22; it is seen that, the story displacement of
composite frame decreases upto 15-20 % & story drift of composite frame considerably reduced upto 5-10 % as
compared to RCC frame respectively.
VII. Conclusion From the above results and discussion it is concluded that the
1) Steel-concrete composite frame having more lateral load capacity compare to RCC frame.
2) The lateral displacement of steel-concrete composite frame is reduced as compared with RCC frame.
3) Steel-concrete composite frame follows strong column weak beam behaviour, as hinges are formed in beam
element rather than column element.
4) Steel-concrete composite has light in weight as compared to RCC which gives ecnomical foundation design.
5) No unexpected plastic hinges were observed from inelastic analysis for both RCC & composite frame. But
yield mechanism of composite is superior to RCC.
6) Composite moment resisting frame has better performance in high seismicity as compared to RCC.
Acknowledgements I would like to thank Prof. P M Kulkarni; guide & P G coordinator, TCOER, Pisoli, Pune and Prof.
Shingade V. S., HOD Civil Engg. Dept. of Trinity college of Engineering and Research, for constant
encouragement and their valuable support. Also I am very grateful to my parents & colleagues who are
constantly encouraging me.
References [1]. I.M. Castro, A.Y. Elghazouli and B.A. Izzuddin, Performance assessment of composite moment-resisting frames. 29th the 14th
world conference on earthquake engineering, Beijing, China october 12-17, 2008, [2]. Liu Jingbo and Liu Yangbing, Seismic behavior analysis of steel-concrete composite frame structure systems, The 14th World
Conference on Earthquake Engineering, Beijing, China, October 12-17, 2008,
[3]. Yangbing Liu, Yuanxin Liao & Nina Zheng, Analysis of Strong Column and Weak Beam Behavior of Steel-concrete Mixed Frames, The 15th World Conference on Earthquake Engineering, Lisboa,2012
[4]. Liang, Q. Hadi, M. N. (2008). Nonlinear analysis and behavior of concrete-filled steel tubular beam-columns. Structural
Engineering and Construction Conference, London, (pp. 777-782), [5]. Ricardo Herrera, Brian Lewis, James Ricles, Richard Sause, Experimental studies on steel moment resisting frames with concrete
filled tube columns under earthquake loading conditions, 13th World Conference on Earthquake Engineering, Vancouver, B.C.,
Canada, August 1-6, 2004 Paper No. 1591 [6]. QI Jing-jing, Jiang Li-zhong, Experimental study on seismic behaviors of steel−concrete composite frames, international journal on
engineering, medical & science, J. Cent. South Univ. (2015) 22: 4396−4413, DOI: 10.1007/s11771-015-2988-6.
[7]. J. Y. Richard Liew, Hong Chen, and N. E. Shanmugam, ASCE,Journal of Structural Engineering., 2001, 127(2) [8]. Barbato, Michele, LSU, Nonlinear seismic response analysis of steel-concrete composite frames, Journal of Structural Engineering,
134(6), 01-01-2008,
[9]. M. Elchalakani, X.L. Zhao, R.H. Grzebieta, Concrete-filled circular steel tubes subjected to pure bending, Journal of Constructional Steel Research 57 (2001) 1141–1168,
[10]. Cui Chunyi, Zhao Jinfeng, Zhang Yannian and Zuo Wenxin, Experimental Analyses of Mechanical Performance of CFST Column
to Assembled Steel H-Beam Connections, The Open Mechanical Engineering Journal, 2014, 8, 270-278, [11]. Donglin Wang, Li Wang, Nonlinear Analysis of the New Composite Frame Structure, International Journal of Nonlinear Science
Vol.11(2011) No.2
Comparative inelastic analysis of RCC and steel-concrete composite frame
[12]. Alessandro Zona; Michele Barbato; and Joel P. Conte, M.Asce, Nonlinear Seismic Response Analysis of Steel–Concrete Composite
Frames, Journal of Structural Engineering, June 2008
[13]. Konstantinos Daniel Tsavdaridis, Seismic Analysis of Steel–Concrete Composite Buildings: Numerical Modeling, Encyclopedia of Earthquake Engineering, DOI 10.1007/978-3-642-36197-5,
[14]. G. Thermou, A.S. Elnashai, A. Plumier, Seismic design and performance of composite frames, Journal of Constructional Steel