Steel and Composite Structures

  • 제32권1호
  • /
  • Pages.79-90
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  • 2019
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Experimental evaluation of steel connections with horizontal slit dampers

  • Lor, Hossein Akbari (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Izadinia, Mohsen (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Memarzadeh, Parham (Department of Civil Engineering, Najafabad Branch, Islamic Azad University)
  • 투고 : 2018.07.31
  • 심사 : 2019.05.31
  • 발행 : 2019.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

This study introduces new connections that connect the beam to the column with slit dampers. Plastic deformations and damages concentrate on slit dampers. The slit dampers prevent plastic damages of column, beam, welds and panel zone and act as fuses. The slit dampers were prepared with IPE profiles that had some holes in the webs. In this paper, two experimental specimens were made. In first specimen (SDC1), just one slit damper connected the beam to the column and one IPE profile with no holes connected the bottom flange of the beam to the column. The second specimen (SDC2) had two similar dampers which connected the top and bottom flange of the beam to the column. Cyclic loading was applied on Specimens. The cyclic displacements conditions continued until 0.06 radian rotation of connection. The experimental observations showed that the bending moment of specimen SDC2 increased until 0.04 story drift. In specimen SDC1, the bending moment decreases after 0.03 story drift. Test results indicate the high performance of the proposed connection. Based on the results, the specimen with two slit damper (SDC2) has higher seismic performance and dissipates more energy in loading process than specimen SDC1. Theoretical formulas were extended for the proposed connections. Numerical studies have been done by ABAQUS software. The theoretical and numerical results had good agreements with the experimental data. Based on the experimental and numerical investigations, the high ductility of connection is obtained from plastic damages of slit dampers. The most flexural moment of specimen SDC1 occurred at 3% story drift and this value was 1.4 times the plastic moment of the beam section. This parameter for SDC2 was 1.73 times the plastic moment of the beam section and occurred at 4% story drift. The dissipated energy ratio of SDC2 to SDC1 is equal to 1.51.

키워드

참고문헌

  1. AISC 341-10 (2010), Seismic Provisions for Structural Steel Buildings; American Institute of Steel Construction, Chicago, IL, USA.
  2. AISC 358-10 (2010), Prequalified connections for special and intermediate steel moment frames for seismic applications; American Institute of Steel Construction, Chicago, IL, USA.
  3. Amiri, H.A., Najafabadi, E.P. and Estekanchi, H.E. (2018), "Experimental and analytical study of Block Slit Damper", J. Constr. Steel Res., 141, 167-178. https://doi.org/10.1016/j.jcsr.2017.11.006
  4. ASTM E8/E8M-16a (2016), Standard test methods for tension testing of metallic materials; American Society for Testing Materials, PA, USA.
  5. Benavent-Climent, A. (2010), "A brace-type seismic damper based on yielding the walls of hollow structural sections", Eng. Struct., 32(4), 1113-1122. https://doi.org/10.1016/j.engstruct.2009.12.037
  6. Chan, R.W. and Albermani, F. (2008), "Experimental study of steel slit damper for passive energy dissipation", Eng. Struct., 30(4), 1058-1066. https://doi.org/10.1016/j.engstruct.2007.07.005
  7. Eldin, M.N., Kim, J. and Kim, J. (2018), "Optimum distribution of steel slit-friction hybrid dampers based on life cycle cost", Steel Compos. Struct., Int. J., 27(5), 633-646. http://dx.doi.org/10.12989/scs.2018.27.5.633
  8. Eurocode 3 (2004), Design of steel structures - Part 1-8: Design of Joints, Brussels, Belium.
  9. Faridmehr, I., Osman, M.H., Tahir, M.M., Nejad, A.F. and Hodjati, R. (2015), "Severe loading assessment of modern and new proposed beam to column connections", Lat. Am. J. Solids Struct., 12(7), 1202-1223. http://dx.doi.org/10.1590/1679-78251286
  10. Farrokhi, H., Danesh, F.A. and Eshghi, S. (2010), "The structural detailing effect on seismic behavior of steel moment resisting connections", Struct. Eng. Mech., Int. J., 35(5), 617-630. http://dx.doi.org/10.12989/sem.2010.35.5.617
  11. FEMA-350 (2000), Recommended seismic design criteria for new steel moment-frame buildings; Federal Emergency Management Agency, Washington DC, USA.
  12. FEMA-355D (2000), State of the art report on connection performance; Federal Emergency Management Agency, Washington DC, USA.
  13. He, L., Togo, T., Hayashi, K., Kurata, M. and Nakashima, M. (2016), "Cyclic behavior of multirow slit shear walls made from low-yield-point steel", J. Struct. Eng., 142(11), 04016094. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001569
  14. Hedayat, A.A. (2015), "Prediction of the force displacement capacity boundary of an unbuckled steel slit damper", J. Constr. Steel Res., 114, 30-50. https://doi.org/10.1016/j.jcsr.2015.07.003
  15. Ibrahim, R. (2008), "Recent advances in nonlinear passive vibration isolators", J. Sound Vib., 314(3-5), 371-452. https://doi.org/10.1016/j.jsv.2008.01.014
  16. Jones, S.L., Fry, G.T. and Engelhardt, M.D. (2002), "Experimental evaluation of cyclically loaded reduced beam section moment connections", J. Struct. Eng., 128(4), 441-451. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(441)
  17. Karamodin, A. and Zanganeh, A. (2017), "Seismic Design and Performance of Dual Moment and Eccentrically Braced Frame System Using PBPD Method", Lat. Am. J. Solids Struct., 14(3), 441-463. http://dx.doi.org/10.1590/1679-78253425
  18. Karavasilis, T.L., Kerawala, S. and Hale, E. (2012), "Hysteretic model for steel energy dissipation devices and evaluation of a minimal-damage seismic design approach for steel buildings", J. Constr. Steel Res., 70, 358-367. https://doi.org/10.1016/j.jcsr.2011.10.010
  19. Ke, K. and Chen, Y. (2014), "Energy-based damage-control design of steel frames with steel slit walls", Struct. Eng. Mech., Int. J., 52(6), 1157-1176. http://dx.doi.org/10.12989/sem.2014.52.6.1157
  20. Khatamirad, M. and Shariatmadar, H. (2017), "Experimental and analytical study of steel slit shear wall", Steel Compos. Struct., Int. J., 24(6), 741-751. http://dx.doi.org/10.12989/scs.2017.24.6.741
  21. Kim, J., Kim, M. and Eldin, M.N. (2017), "Optimal distribution of steel plate slit dampers for seismic retrofit of structures", Steel Compos. Struct., Int. J., 25(4), 473-484. http://dx.doi.org/10.12989/scs.2017.25.4.473
  22. Lee, J. and Kim, J. (2015), "Seismic performance evaluation of moment frames with slit-friction hybrid dampers", Earthq. Struct., Int. J., 9(6), 1291-1311. http://dx.doi.org/10.12989/eas.2015.9.6.1291
  23. Li, B., Yang, Q. and Yang, N. (2011), "An investigation on aseismic connection with opening in beam web in steel moment frames", Adv. Struct. Eng., 14(3), 575-587. https://doi.org/10.1260/1369-4332.14.3.575
  24. Lu, J., Qiao, X., Liao, J. and Tang, Y. (2016), "Experimental study and numerical simulation on steel plate shear walls with nonuniform spacing slits", Int. J. Steel Struct., 16(4), 1373-1380. https://doi.org/10.1007/s13296-016-0044-5
  25. Mahjoubi, S. and Maleki, S. (2016), "Seismic performance evaluation and design of steel structures equipped with dualpipe dampers", J. Constr. Steel Res., 122, 25-39. https://doi.org/10.1016/j.jcsr.2016.01.023
  26. Mirghaderi, S.R., Torabian, S. and Imanpour, A. (2010), "Seismic performance of the Accordion-Web RBS connection", J. Constr. Steel Res, 66(2), 277-288. https://doi.org/10.1016/j.jcsr.2009.09.007
  27. Oh, S.-H., Kim, Y.-J. and Ryu, H.-S. (2009), "Seismic performance of steel structures with slit dampers", Eng. Struct., 31(9), 1997-2008. https://doi.org/10.1016/j.engstruct.2009.03.003
  28. Pachoumis, D.T., Galoussis, E.G., Kalfas, C.N. and Efthimiou, I.Z. (2010), "Cyclic performance of steel moment-resisting connections with reduced beam sections-experimental analysis and finite element model simulation", Eng. Struct., 32(9), 2683-2692. https://doi.org/10.1016/j.engstruct.2010.04.038
  29. Popov, E.P. and Tsai, K.-C. (1989), "Performance of large seismic steel moment connections under cyclic loads", Eng. J., 26(2), 51-60.
  30. Saffari, H., Hedayat, A. and Nejad, M.P. (2013), "Post-Northridge connections with slit dampers to enhance strength and ductility", J. Constr. Steel Res., 80, 138-152. https://doi.org/10.1016/j.jcsr.2012.09.023
  31. Saleh, A., Zahrai, S.M. and Mirghaderi, S.R. (2016), "Experimental study on innovative tubular web RBS connections in steel MRFs with typical shallow beams", Struct. Eng. Mech., Int. J., 57(5), 785-808. http://dx.doi.org/10.12989/sem.2016.57.5.785
  32. Shahri, S.F. and Mousavi, S.R. (2018), "Seismic behavior of beam-to-column connections with elliptic slit dampers", Steel Compos. Struct., Int. J., 26(3), 289-301. http://dx.doi.org/10.12989/scs.2018.26.3.289
  33. Tabar, A.M. and Deylami, A. (2006), "Investigation of major parameters affecting instablility of steel beams with RBS moment connections", Steel Compos. Struct., Int. J., 6(3), 203-219. http://dx.doi.org/10.12989/scs.2006.6.3.203
  34. Tagawa, H., Yamanishi, T., Takaki, A. and Chan, R.W. (2016), "Cyclic behavior of seesaw energy dissipation system with steel slit dampers", J. Constr. Steel Res., 117, 24-34. https://doi.org/10.1016/j.jcsr.2015.09.014
  35. Vasdravellis, G., Karavasilis, T.L. and Uy, B. (2012), "Large-scale experimental validation of steel posttensioned connections with web hourglass pins", J. Struct. Eng., 139(6), 1033-1042. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000696
  36. Vasdravellis, G., Karavasilis, T.L. and Uy, B. (2014), "Design rules, experimental evaluation, and fracture models for highstrength and stainless-steel hourglass shape energy dissipation devices", J. Struct. Eng., 140(11), 04014087. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001014
  37. Zahrai, S.M., Mirghaderi, S.R. and Saleh, A. (2017), "Tubular Web Reduced Beam Section (TW-RBS) connection, a numerical and experimental study and result comparison", Steel Compos. Struct., Int. J., 23(5), 571-583. http://dx.doi.org/10.12989/scs.2017.23.5.571
  38. Zheng, J., Li, A. and Guo, T. (2015), "Analytical and experimental study on mild steel dampers with non-uniform vertical slits", Earthq. Eng. Eng. Vib., 14(1), 111-123. https://doi.org/10.1007/s11803-015-0010-9
  39. Zhou, Q. and Lu, X. (2004), "Shaking table test and numerical analysis of a combined energy dissipation system with metallic yield dampers and oil dampers", Struct. Eng. Mech., Int. J., 17(2), 187-201. http://dx.doi.org/10.12989/sem.2004.17.2.187

피인용 문헌

  1. Further study on improvement on strain concentration in through-diaphragm connection vol.39, pp.2, 2019, https://doi.org/10.12989/scs.2021.39.2.135