DOI QR코드

DOI QR Code

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)
  • 투고 : 2014.12.17
  • 심사 : 2015.07.22
  • 발행 : 2015.10.25

초록

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.

키워드

참고문헌

  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. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000306
  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. https://doi.org/10.1080/13632460902837793
  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. https://doi.org/10.1016/j.engstruct.2011.12.036
  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. https://doi.org/10.1007/BF02472918
  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. https://doi.org/10.1061/(ASCE)BE.1943-5592.0000561
  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.

피인용 문헌

  1. Comparative Numerical Research on the Seismic Behavior of RC Frames Using Normal and High-Strength Reinforcement vol.15, pp.4, 2017, https://doi.org/10.1007/s40999-016-0082-6
  2. Seismic performance of RC bridge piers reinforced with varying yield strength steel vol.12, pp.2, 2017, https://doi.org/10.12989/eas.2017.12.2.201
  3. Crack Risk Evaluation of Submerged Concrete Tunnel during Hardening Phase vol.2018, pp.None, 2015, https://doi.org/10.1155/2018/7354025
  4. Seismic behavior of reinforced concrete squat walls with high strength reinforcements: An experimental study vol.20, pp.3, 2019, https://doi.org/10.1002/suco.201800181