[1] Pan Jinlong, Mo ChuangXu Li, Chen Junhan,. Seismic behaviors of steel reinforced ECC/RC composite columnsunder low-cyclic loading [J]. Journal of Southeast University (English Edition), 2017, 33 (1): 70-78. [doi:10.3969/j.issn.1003-7985.2017.01.012]

Copy

Seismic behaviors of steel reinforced ECC/RC composite columnsunder low-cyclic loading()

Share：

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

Volumn:

33

Issue:

2017 1

Page:

70-78

Research Field:

Civil Engineering

Publishing date:

2017-03-30

Info

Title:

Seismic behaviors of steel reinforced ECC/RC composite columnsunder low-cyclic loading

Author(s):

Pan Jinlong;  Mo ChuangXu Li;  Chen Junhan

Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

engineered cementitious composites(ECC);  ECC/RC composite columns;  hysteretic curves;  ductility;  energy dissipation;  parametric analysis

PACS:

TU375.3

DOI:

10.3969/j.issn.1003-7985.2017.01.012

Abstract:

To improve the seismic performance of columns, engineered cementitious composite(ECC)is introduced to partially substitute concrete at the base of the columns to form ECC/reinforced concrete(RC)composite columns. The mechanical behaviors of the ECC/RC composite columns are numerically studied under low-cyclic loading with the finite element analysis software of MSC.MARC. It is found that the ECC/RC composite columns can significantly enhance the load capacity, the ductility and energy dissipation of columns. Then, the effects of the height of the ECC, the axial compression ratio and the longitudinal reinforcement ratio on the seismic behaviors of the composite columns are parametrically studied. The results show that the ECC/RC composite column with a height of the ECC layer of 0.8h(h is the height to the cross-section)can achieve similar seismic performance of a full ECC column. The peak load of the composite column increases significantly while the ductility decreases with the increase of the axial compression ratio. Increasing the longitudinal reinforcement ratio within a certain range can improve the ductility and energy dissipation capacity and almost has no effect on load capacity. The analysis results are instructive and valuable for reference in designing ECC structures.

References:

[1] Tsai M H, Lin B H. Investigation of progressive collapse resistance and inelastic response for an earthquake-resistant RC building subjected to column failure [J]. Engineering Structures, 2008, 30(12): 3619-3628. DOI:10.1016/j.engstruct.2008.05.031.
[2] Ye L P, Qu Z, Ma Q L, et al. Study on ensuring the strong column-weak beam mechanism for RC frames based on the damage analysis in the Wenchuan earthquake [J]. Building Structure, 2008(11): 52-59, 67.
[3] Kim Y Y, Fischer G, Li V C. Performance of bridge deck link slabs designed with ductile ECC [J]. ACI Structural Journal, 2004, 101(6):792-801.
[4] Lepech M D, Li V C. Application of ECC for bridge deck link slabs [J]. Materials and Structures, 2009, 42(9):1185-1195. DOI:10.1617/s11527-009-9544-5.
[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] Christopher K Y L, Cheung Y N, Zhang J. Fatigue enhancement of concrete beam with ECC layer [J]. Cement and Concrete Research, 2007, 29(6):465-473.
[7] Park W S, Yun H D. Seismic performance of pseudo strain-hardening cementitious composite coupling beams with different reinforcement details [J]. Composites Part B: Engineering, 2011, 42(6):1427-1445. DOI:10.1016/j.compositesb.2011.04.049.
[8] Parra-Montesinos G, Wight J K. Seismic response of exterior RC column-to-steel beam connections [J]. Journal of Structural Engineering, 2000, 126(10):1113-1121. DOI:10.1061/(asce)0733-9445(2000)126:10(1113).
[9] Fukuyama H. Application of high performance fiber reinforced cementitious composites for damage mitigation of building structures [J]. Advance Concrete Technology, 2006, 4(1):35-44. DOI:10.3151/jact.4.35.
[10] Li V C. On engineered cementitious composites(ECC)[J]. Journal of Advanced Concrete Technology, 2003, 1(3): 215-230. DOI:10.3151/jact.1.215.
[11] Wang X L, Lu X Z, Ye L P. Numerical simulation for the hysteresis behavior of RC columns under cyclic loads [J]. Engineering Mechanics, 2007, 24(12):76-81.
[12] Esmaeily A, Xiao Y. Behavior of reinforced concrete columns under variable axial loads: analysis [J]. ACI Structural Journal, 2005, 102(5):736-744.
[13] Légeron F, Paultre P, Mazars J. Damage mechanics modeling of nonlinear seismic behavior of concrete structures [J]. Structural Engineering, 2005, 131(6): 946-954. DOI:10.1061/(asce)0733-9445(2005)131:6(946).
[14] Wang X L. Research on resetting performance of non-cohesive reinforced concrete columns with high strength steel strand [D]. Beijing: School of Civil Engineering, Tsinghua University, 2007.(in Chinese)
[15] Han T S, Feenstra P H, Billington S L. Simulation of highly ductile fiber-reinforced cement-based composite components under cyclic loading[J]. ACI Structural Journal, 2003, 100(6): 749-757.
[16] Kesner K E, Billington S L. Investigation of ductile cement-based composites for seismic strengthening and retrofit [C]//Proceedings of the Fourth International Conference on Fracture Mechanics of Concrete Structures. Cachan, France, 2001: 65-72.
[17] Shan Q F, Pan J L, Chen J H. Mechanical behaviors of steel reinforced ECC/concrete composite columns under combined vertical and horizontal loading [J]. Journal of Southeast University(English Edition), 2015, 31(2):259-265.
[18] Li V C, Fischer G. Interaction between steel reinforcement and engineered cementitious composites[C]//Proceedings of the Third International Workshop on High Performance Fiber Reinforced Cement Composites. Mainz, Germany, 1999: 361-369.
[19] Yuan F. Seismic behaviors of steel reinforced ECC/reinforced concrete composite frame structures [D]. Nanjing: School of Civil Engineering, Southeast University, 2014.(in Chinese)
[20] 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 Building Industry Press, 2010.(in Chinese)

Memo

Memo:

Biography: Pan Jinlong(1976—), male, doctor, professor, jinlongp@gmail.com.
Foundation items: The National Natural Science Foundation of China(No.51278118), the Natural Science Foundation of Jiangsu Province(No.BK2012756), the Key Project of Ministry of Education of China(No.113029A), the Third Five-Year Major Scientific and Technological Project of China Metallurgical Group Corporation.
Citation: Pan Jinlong, Mo Chuang, Xu Li, et al. Seismic behaviors of steel reinforced ECC/RC composite columns under low-cyclic loading[J].Journal of Southeast University(English Edition), 2017, 33(1):70-78.DOI:10.3969/j.issn.1003-7985.2017.01.012.

Common functions