DOI QR코드

DOI QR Code

Investigation of lateral impact behavior of RC columns

  • Anil, Ozgur (Department of Civil Engineering, Gazi University) ;
  • Erdem, R. Tugrul (Department of Civil Engineering, Celal Bayar University) ;
  • Tokgoz, Merve Nilay (Department of Civil Engineering, Gazi University)
  • 투고 : 2017.11.19
  • 심사 : 2018.05.28
  • 발행 : 2018.07.25

초록

Reinforced concrete (RC) columns which are the main vertical structural members are exposed to several static and dynamic effects such as earthquake and wind. However, impact loading that is sudden impulsive dynamic one is the most effective loading type acting on the RC columns. Impact load is a kind of impulsive dynamic load which is ignored in the design process of RC columns like other structural members. The behavior of reinforced concrete columns under impact loading is an area of research that is still not well understood; however, work in this area continues to be motivated by a broad range of applications. Examples include reinforced concrete structures designed to resist accidental loading scenarios such as falling rock impact; vehicle or ship collisions with buildings, bridges, or offshore facilities; and structures that are used in high-threat or high-hazard applications, such as military fortification structures or nuclear facilities. In this study, free weight falling test setup is developed to investigate the behavior effects on RC columns under impact loading. For this purpose, eight RC column test specimens with 1/3 scale are manufactured. While drop height and mass of the striker are constant, application point of impact loading, stirrup spacing and concrete compression strength are the experimental variables. The time-history of the impact force, the accelerations of two points and the displacement of columns were measured. The crack patterns of RC columns are also observed. In the light of experimental results, low-velocity impact behavior of RC columns were determined and interpreted. Besides, the finite element models of RC columns are generated using ABAQUS software. It is found out that proposed finite element model could be used for evaluation of dynamic responses of RC columns subjected to low-velocity impact load.

키워드

참고문헌

  1. ABAQUS User Manual (2010), Version 6.10.
  2. Alam, M.I. and Fawzia, S. (2015), "Numerical studies on CFRP strengthened steel columns under transverse impact", Compos. Struct., 120, 428-441. https://doi.org/10.1016/j.compstruct.2014.10.022
  3. Astarlioglu, S. and Krauthammer, T. (2014), "Response of normalstrength and ultra-high-performance fiber-reinforced concrete columns to idealized blast loads", Eng. Struct., 61, 1-12. https://doi.org/10.1016/j.engstruct.2014.01.015
  4. Astarlioglu, S., Krauthammer, T., Morency, D. and Tran, T.P. (2013), "Behavior of reinforced concrete columns under combined effects of axial and blast-induced transverse loads", Eng. Struct., 55, 26-34. https://doi.org/10.1016/j.engstruct.2012.12.040
  5. Bao, X. and Li, B. (2010), "Residual strength of blast damaged reinforced concrete columns", Int. J. Impact Eng., 37(3), 295-308. https://doi.org/10.1016/j.ijimpeng.2009.04.003
  6. Chakradhara, R.M., Bhattacharyya, S.K. and Barai, S.V. (2011), "Behavior of recycled aggregate concrete under drop weight impact load", Constr. Build. Mater., 25, 69-80. https://doi.org/10.1016/j.conbuildmat.2010.06.055
  7. Erdem, R.T. (2014), "Prediction of acceleration and impact force values of a reinforced concrete slab", Comput. Concrete, 14(5), 563-575. https://doi.org/10.12989/cac.2014.14.5.563
  8. Erdem, R.T., Gucuyen, E., Kantar, E. and Bagci, M. (2014), "Impact behavior of concrete beams", Gradevinar, 66(11), 981-986.
  9. Fujikake, K., Senga, T., Ueda, N., Ohno, T. and Katagiri, M., (2006), "Study on impact response of reactive powder concrete beam and its analytical model", J. Adv. Concrete Technol., 4(1), 99-108. https://doi.org/10.3151/jact.4.99
  10. Kantar, E. and Anil, O. (2012), "Low velocity of impact behavior of concrete beam strengthened with CFRP strip", Steel Compos. Struct., 12(3), 207-230. https://doi.org/10.12989/scs.2012.12.3.207
  11. Nassr, A.A., Razaqpur, A.G., Tait, M.J., Campidelli, M. and Foo, S. (2013), "Strength and stability of steel beam columns under blast load", Int. J. Impact Eng., 55, 34-48. https://doi.org/10.1016/j.ijimpeng.2012.11.010
  12. Thai, D.K. and Kim, S.E. (2014), "Failure analysis of reinforced concrete walls under impact loading using the finite element approach", Eng. Fail. Anal., 45, 252-277. https://doi.org/10.1016/j.engfailanal.2014.06.006
  13. Wu, K.C., Li, B. and Tsai, K.C. (2011), "The effects of explosive mass ratio on residual compressive capacity of contact blast damaged composite columns", J. Constr. Steel Res., 67(4), 602-612. https://doi.org/10.1016/j.jcsr.2010.12.001
  14. Yang, S. and Qi, C. (2013), "Multi objective optimization for empty and foam-filled square columns under oblique impact loading", Int. J. Impact Eng., 54, 177-191. https://doi.org/10.1016/j.ijimpeng.2012.11.009
  15. Yi, N.H., Choi, J.H., Kim, S.J. and Kim, J.H.J. (2015), "Collision capacity evaluation of RC columns by impact simulation and probabilistic evaluation", J. Adv. Concrete Technol., 13(2), 67-81. https://doi.org/10.3151/jact.13.67
  16. Yousuf, M., Uy, B., Tao, Z., Remennikov, A. and Richard Liew, J.Y. (2014), "Impact behavior of pre-compressed hollow and concrete filled mild and stainless steel columns", J. Constr. Steel Res., 96, 54-68. https://doi.org/10.1016/j.jcsr.2013.12.009

피인용 문헌

  1. Experimental Investigation of Impact Behaviour of RC Slab with Different Reinforcement Ratios vol.24, pp.1, 2018, https://doi.org/10.1007/s12205-020-1168-x
  2. Effect of CFRP Shear Strengthening on the Flexural Performance of the RC Specimen under Unequal Impact Loading vol.2020, pp.None, 2018, https://doi.org/10.1155/2020/5403835