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http://dx.doi.org/10.12989/eas.2015.9.4.699

Effect of reinforcement strength on seismic behavior of concrete moment frames  

Fu, Jianping (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering)
Wu, Yuntian (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering)
Yang, Yeong-bin (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering)
Publication Information
Earthquakes and Structures / v.9, no.4, 2015 , pp. 699-718 More about this Journal
Abstract
The effect of reinforcing concrete members with high strength steel bars with yield strength up to 600 MPa on the overall seismic behavior of concrete moment frames was studied experimentally and numerically. Three geometrically identical plane frame models with two bays and two stories, where one frame model was reinforced with hot rolled bars (HRB) with a nominal yield strength of 335 MPa and the other two by high strength steel bars with a nominal yield strength of 600 MPa, were tested under simulated earthquake action considering different axial load ratios to investigate the hysteretic behavior, ductility, strength and stiffness degradation, energy dissipation and plastic deformation characteristics. Test results indicate that utilizing high strength reinforcement can improve the structural resilience, reduce residual deformation and achieve favorable distribution pattern of plastic hinges on beams and columns. The frame models reinforced with normal and high strength steel bars have comparable overall deformation capacity. Compared with the frame model subjected to a low axial load ratio, the ones under a higher axial load ratio exhibit more plump hysteretic loops. The proved reliable finite element analysis software DIANA was used for the numerical simulation of the tests. The analytical results agree well with the experimental results.
Keywords
high strength; reinforcement; moment frame; seismic performance; plastic hinge;
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  • Reference
1 AASHTO (2012), AASHTO LRFD bridge design specifications, (6th Edition), American Association of State Highway and Transportation Officials, Washington DC.
2 AASHTO (2013), Interim revisions to the AASHTO LRFD bridge design specifications, (6th Edition), American Association of State Highway and Transportation Officials, Washington, DC.
3 ACI 318 Committee 318 (1971), 318-71: Building code requirements for reinforced concrete, American Concrete Institute, Farmington Hills, MI.
4 ACI 318 Committee 318 (2011), 318-11/318-11R: Building code requirements for reinforced concrete and commentary, American Concrete Institute, Farmington Hills, MI.
5 CEB-FIP Model Code 90 (1993), CEB Bulletin No. 213/214, Thomas Telford, Lausanne, Switzerland.
6 Civil and structural groups of Tsinghua University, Xi'an Jiaotong University and Beijing Jiaotong University (2008), "Analysis on seismic damage of buildings in the Wenchuan Earthquake", J. Build. Struct., 29(4), 1-9.
7 DIANA Version 9 (2004), Finite element analysis user's manual-nonlinear analysis, TNO Building and Construction Research, Delft, the Netherlands.
8 Fu, J.P., Yang, H., Huang, Q. and Xue, F. (2014), "Nonlinear dynamic response of frame structures reinforced with high-strength steel bars under strong earthquake action", J. Build. Struct., 35(8), 23-29.
9 GB 500010 (2010), Code for design of concrete structures, Ministry of Housing and Urban-rural Development, Beijing, China.
10 GB 500011 (2010), Code for seismic design of buildings, Ministry of Housing and Urban-rural Development, Beijing, China.
11 Harries, K.A., Shahrooz, B.M. and Soltani, A. (2012), "Flexural crack widths in concrete girders reinforced with high-strength reinforcement", J. Bridge Eng., 17(5), 804-812.   DOI
12 Li, B., Kulkarni, S.A. and Leong, C.L. (2009), "Seismic performance of precast hybrid-steel concrete connections", J. Earthq. Eng., 13(5), 667-689.   DOI
13 Mast, R.F., Dawood, M., Rizkalla, S.M. and Zia, P. (2008), "Flexural strength design of concrete beams reinforced with high-strength steel bars", ACI Struct. J., 105(4), 570-577.
14 Rautenberg, J.M., Pujol, S., Tavallali, H. and Lepage, A. (2012), "Reconsidering the use of high-strength reinforcement in concrete columns", Eng. Struct., 37(1), 135-142.   DOI
15 RILEM 50-FMC Committee (1985), "Determination of the fracture energy of mortar and concrete by means of three point bend tests on notched beams", Mater. Struct., 18(4), 287-290.   DOI
16 Shahrooz, B.M., Reis, J.M., Wells, E.L., Miller, R.A., Harries, K.A. and Russell, H.G. (2013), "Flexural members with high-strength reinforcement: behavior and code implication", J. Bridge Eng., 19(1), 1-7.   DOI
17 Wang, X.F. (2013), "Study on seismic performance of concrete frame structure reinforced with high-strength rebars", Ph.D. Dissertation, China Academy of Building Research, Beijing, China.