[1] Dong Luoting, Pan Jinlong, Yuan Fang, Leung CKY, et al. Flexural behaviors of steel reinforcedECC/concrete composite beams [J]. Journal of Southeast University (English Edition), 2012, 28 (2): 195-202. [doi:10.3969/j.issn.1003-7985.2012.02.012]

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Flexural behaviors of steel reinforcedECC/concrete composite beams()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

28

Issue:

2012 2

Page:

195-202

Research Field:

Civil Engineering

Publishing date:

2012-06-30

Info

Title:

Flexural behaviors of steel reinforcedECC/concrete composite beams

Author(s):

Dong Luoting¹;  Pan Jinlong¹;  Yuan Fang¹;  Leung CKY²

¹Key Laboratory of Concrete and Pre-Stressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
²Department of Civil and Environmental Engineering, Hong Kong University of Science and Techno

Keywords:

engineered cementitious composites(ECC);  reinforced concrete;  composite beam;  flexural properties;  load carrying capacity

PACS:

TU354

DOI:

10.3969/j.issn.1003-7985.2012.02.012

Abstract:

An engineered cementitious composite(ECC)is introduced to partially substitute concrete in the tension zone of a reinforced concrete beam to form an ECC/reinforced concrete(RC)composite beam, which can increase the ductility and crack resisting ability of the beam. Based on the assumption of the plane remaining plane and the simplified constitutive models of materials, the stress and strain distributions along the depth of the composite beam in different loading stages are comprehensively investigated to obtain calculation methods of the load-carrying capacities for different stages. Also, a simplified formula for the ultimate load carrying capacity is proposed according to the Chinese code for the design of concrete structures. The relationship between the moment and curvature for the composite beam is also proposed together with a simplified calculation method for ductility of the ECC/RC composite beam. Finally, the calculation method is demonstrated with the test results of a composite beam. Comparison results show that the calculation results have good consistency with the test results, proving that the proposed calculation methods are reliable with a certain theoretical significance and reference value.

References:

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[4] Fischer G, Fukuyama H, Li V C. Effect of matrix ductility on the performance of reinforced ECC column members under reversed cyclic loading conditions [C]//Proceedings of the JCI International Workshop on DFRCC—Application and Evaluation. Takayama, Japan, 2002:269-278.
[5] Li V C. Engineered cementitious composites-tailored composites through micromechanical modeling [C]//Fiber Reinforced Concrete: Present and Future. Montreal: Canadian Society for Civil Engineering, 1998:64-97.
[6] Cao Qian. Development of pseudo-ductile permanent formwork with glass fiber reinforced plastics reinforcements [D]. Hong Kong: Department of Civil and Environmental Engineering of Hong Kong University of Science and Technology, 2007.
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[8] Cheung Y N. Investigation of concrete components with a pseudo-ductile layer [D]. Hong Kong: Department of Civil and Environmental Engineering of Hong Kong University of Science and Technology, 2004.
[9] Ministry of Housing and Urban-Rural Development of the People’s Republic of China. GB 50010—2010 Code for design of concrete structures[S]. Beijing: China Architecture and Building Press, 2010.(in Chinese)
[10] Luo M. Study on the optimal design and mechanical properties of PVA-fiber reinforced cementitious composites [D]. Nanjing: Department of Civil Engineering of Southeast University, 2010.(in Chinese)
[11] Kanda T, Lin Zhong, Li V C. Tensile stress-strain modeling of pseudo strain-hardening cementitious composites [J]. Journal of Materials in Civil Engineering, 2000, 12(2):147-156.
[12] Zhang J, Li V C. Monotonic and fatigue performance of engineered fiber reinforced cementitious composite in overlay system [J]. Cement and Concrete Research, 2002, 32(3): 415-423.

Memo

Memo:

Biographies: Dong Luoting(1986—), male, graduate; Pan Jinlong(corresponding author), male, doctor, professor, jinlongp@gmail.com.
Foundation items: The National Natural Science Foundation of China(No.50808043), the National Basic Research Program of China(973 Program)(No.2009CB623200), Foundation of Jiangsu Key Laboratory of Construction Materials, Program for Special Talents in Six Fields of Jiangsu Province(No.2011-JZ-010).
Citation: Dong Luoting, Pan Jinlong, Yuan Fang, et al.Flexural behaviors of steel reinforced ECC/concrete composite beams[J].Journal of Southeast University(English Edition), 2012, 28(2):195-202.[doi:10.3969/j.issn.1003-7985.2012.02.012]

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