Shear Capacity Analysis of Steel Reinforced Lightweight Concrete Elements Based on The Bond Strength
DOI:
https://doi.org/10.56748/ejse.223243Abstract
Push-out tests of steel reinforced lightweight concrete(SRLC) were carried out for nine specimens which were designed according to the orthogonal test method considering four influence factors including strength of lightweight aggregate concrete, stirrup ratio, thickness of protective layer and anchorage length. The curves of average bond stress and loading-end slip were drawn, the characteristics of split failure and push-out failure were analyzed, and the characteristic bond strength was obtained. Combined with the test results of other scholars on the ultimate bond strength of steel reinforced concrete(SRC), it is found that the bond strength of SRLC is not worse than that of normal concrete(NC) which can be taken the same as 0.5MPa. Then the obtained bond strength can be used to calculate the shear strength of SRLC elements which may occur two forms of shear failure-diagonal shear failure and shear bond failure, however, shear bond failure is ignored in some specifications. Shear bond failure capacity computational formula of SRLC elements is deduced into which the bond strength is introduced.To verify the reasonability and accuracy of the proposed approach, the shear capacity and failure pattern are predicted by the proposed means with previous test results and are also compared with other provisions. The analyses and calculations indicate that the proposed method can accurately predict the shear failure mode and the calculated shear capacity values are in better agreement with the experimental results.
Downloads
References
American Concrete Institute (ACI) Building code requirements for structural concrete (ACI 318-11). American Concrete Institute, Detroit, 2011.
Architectural Institute of Japan (AIJ). Calculation Standard and Interpretation of Steel reinforced concrete Structures. Translated by Feng Naiqian, Ye Liping et al. Beijing: Ener-gy Press,1998.
Bai L G, Jiang W S. Discussion on shear bearing capacity of steel reinforced concrete members. Industrial Construction. 48 Supplement, 2018, PP 546-552.
Bryson J O, Mathey R G. Surface condition effect on bond strength of steel beams in concrete. Journal of ACI, 59(3), 1962, PP 397-406. DOI: https://doi.org/10.14359/7922
BSSC. NEHRP Recommended provisions for the development of seismic regulations for new buildings and other struc-tures. Washington, D.C. 1997.
Chen Y S,Zeng S H,Dong F Z et al. Experimental research on the bond stress distribution of deformed reinforcement in the lightweight reinforcement concrete. Journal of Hubei University of Technology. 20(2), 2005, PP 4-7.
Code for Design of Composite Structures (JGJ138-2016). Bei-jing: China Building Industry Press, 2016.
Eurocode No.4 Design of composite steel and concrete struc-tures. Part 1:General rules for buildings. Commission of Eu-ropean Communities, Luxembourg, 2004.
Hassanpour M, Shafigh P, Mahmud H.Mechanical properties of structural lightweight aggregate concrete containing low volume steel fiber. Arabian Journal for Science and Engi-neering. 39, 2014, pp 3579-3590. DOI: https://doi.org/10.1007/s13369-014-1023-9
He Y C, Zhang H J, Wang J F, Liu W, Liu Y. Investigation on axial compressive behavior of partially-encased composite steel and lightweight aggregate concrete long columns. Pro-gress in steel building structures. https: // kns. cnki.net / kcm / detail / 31. 1893. TU. 20220314. 1628. 008. html.
Jin H. Study on shear capacity of steel - reinforced lightweight aggregate concrete. Science and Technology Innovation Herald. 30, 2008, pp 26.
Liu C, Fan Z Y, Chen X N, Zhu C,Wang H, Bai G L. Experi-mental study on bond behavior between section steel and RAC under full replacement ratio. Journal of civil engineer-ing. 23 (3), 2019, PP 1159-1170. DOI: https://doi.org/10.1007/s12205-019-0702-1
Liu C, He Y B. Experimental study on bond behavior of steel reinforced concrete. Journal of Hunan University (Natural Sciences Edition). 29(3), 2002, pp 168-173.
Liu F, Wang X H, Shao Y J, Zhao H T, Xia M. Experiment and calculation of shear capacity of steel reinforced lightweight aggregate concrete beams. Building Structure, 39 (6), 2009, PP 9-21.
Liu K, Zhang T T. Experimental study on bonded behavior of steel reinforced lightweight concrete. Steel construction, 27 (8), 2012, pp 1-5.
Lu C Y, Wang W Y, Li P N. Experiment research on bond be-havior between deformed bar and lightweight concrete. Journal of Guangxi University. 32(1), 2007, PP 6-9.
Natalli J F, Xavier E M, Costa L C B et al. New methodology to analyze the steel-concrete bond in CFST filled with light-weight and conventional concrete.Materials and Structures. 54, 2021, pp 1-13. DOI: https://doi.org/10.1617/s11527-020-01579-5
Nawaz W,Abdalla J A, Hawileh R A et al. Experimental study on the shear strength of reinforced concrete beams cast with lava lightweight aggregates. Archives of Civil and Me-chanical Engineering. 19, 2019, pp 981-996. DOI: https://doi.org/10.1016/j.acme.2019.05.003
Pecce M,Ceroni F. Steel-concrete bond behaviour of light-weight concrete with expanded polystyrene(EPS). Materials and Structures. 48, 2015, pp 139-152. DOI: https://doi.org/10.1617/s11527-013-0173-7
Roeder C W, Chmielowski R, Brown C B. Shear connector re-quirements for embedded steel sections. Journal of Struc-tural Engineering. 125, 1999, pp 142-151. DOI: https://doi.org/10.1061/(ASCE)0733-9445(1999)125:2(142)
Shao Y J. Study on bond behavior of steel reinforced concrete structure. China Cement and Concrete Products. 132, 2003, PP 23-25.
Sun G L, Wang Y j. Experimental study and calculation of ax-ial load transmission in the top section of encased columns. Journal of structures. 6, 1989, PP 40-49.
Wang J J, Liu Z Q. The characters and developments of new light weight aggregate concrete. Concrete. 2006, pp 65-66.
Wang W H, Han L H, Tan Q H,Tao Z. Test on the steel-concrete bond strength in steel reinforced concrete(SRC) columns after fire exposure. Fire Technology. 53, 2017, PP 917-945. DOI: https://doi.org/10.1007/s10694-016-0610-6
Weng C C,Yen S I, Chen C C. Shear strength of concrete-encased composite structural members[J]. Journal of Struc-tural Engineering, 127(10), 2001, pp 1190-1197. DOI: https://doi.org/10.1061/(ASCE)0733-9445(2001)127:10(1190)
Yang Y, Guo Z X, Xue J Y et al. Experiment study on bond slip behavior between section steel and concrete in SRC struc-tures. Journal of Building Structures. 26 (4), 2005, pp 1-9.
Yang Y, Yu Y L, Yang Y, Shao Y J, Guo Y X, Xue J Y. Experi-mental study on shear performance of partially precast steel reinforced concrete beams. Journal of Building Struc-tures, 38(6), 2017, PP 53-60.
Zeng J M, Wang T C, Jiang W S. Analysis on shear strength of SRC column with bonding failure. Journal of Harbin Insti-tute of Technology, 37, 2005, PP 532-534.
Zhang F, Yamada M. Composite columns subjected to bend-ing and shear． Composite construction in steel and con-crete II, New York: ASCE, 1992, 483-498.
Zhen H, Hu X M, Liu J R, Hong W. Experimental study on bond slip behavior between section steel and concrete in partially encased composite members. Industrial Construc-tion. 45 (12), 2015, PP 183-188.
Zhu P F, Shao Y J. Experiment and calculation of shear per-formance of steel reinforced lightweight aggregate concrete beams. Journal of Suzhou University of Science and Tech-nology (Engineering and Technology), 34 (3), 2021, PP 43-49.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 jianwen zhang
This work is licensed under a Creative Commons Attribution 4.0 International License.
