Steel and Composite Structures

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Study on fatigue life and mechanical properties of BRBs with viscoelastic filler

  • Xu, Zhao-Dong (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University) ;
  • Dai, Jun (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University) ;
  • Jiang, Qian-Wei (Longyan Electric Power Survey and Design Institute Co. LTD.)
  • Received : 2017.05.26
  • Accepted : 2017.10.04
  • Published : 2018.01.25
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Abstract

In this paper, two kinds of buckling restrained braces (BRBs) are designed to improve the mechanical properties and fatigue life, the reserved gap and viscoelastic filler with high energy dissipation capacity are employed as the sliding element, respectively. The fatigue life of BRBs considering the effect of sliding element is predicted based on Manson-Coffin model. The property tests under different displacement amplitudes are carried out to evaluate the mechanical properties and fatigue life of BRBs. At last, the finite element analysis is performed to study the effects of the gap and viscoelastic filler on mechanical properties BRBs. Experimental and simulation results indicate that BRB employed with viscoelastic filler has a higher fatigue life and more stable mechanical property compared to BRB employed with gap, and the smaller reserved gap can more effectively improve the energy dissipation capacity of BRB.

Keywords

Acknowledgement

Supported by : National Natural Science Fund of China

References

  1. Abdollahzadeh, G. and Banihashemi, M. (2013), "Response modification factor of dual moment-resistant frame with buckling restrained brace (BRB)", Steel Compos. Struct., Int. J., 14(6), 621-636. https://doi.org/10.12989/scs.2013.14.6.621
  2. AISC (American Institute of Steel Construction) (2010), "Seismic provisions for structural steel building", ANSI/AISC 341-10, Chicago, IL, USA.
  3. Bregoli, G., Genna, F. and Metelli, G. (2016), "Analytical estimates for the lateral thrust in bolted steel buckling-restrained braces", J. Mech. Mater. Struct., 11(2), 173-196. https://doi.org/10.2140/jomms.2016.11.173
  4. Chen, Q., Wang, C.L., Meng, S. and Zeng, B. (2016), "Effect of the unbonding materials on the mechanic behavior of all-steel buckling-restrained braces", Eng. Struct., 111, 478-493. https://doi.org/10.1016/j.engstruct.2015.12.030
  5. Chou, C.C. and Chen, S.Y. (2010), "Subassemblage tests and finite element analyses of sandwiched buckling-restrained braces", Eng. Struct., 32(8), 2108-2121. https://doi.org/10.1016/j.engstruct.2010.03.014
  6. Coffin, L.F.Jr. (1954), "A study of the effects of cyclic thermal stresses on a ductile metal", Trans. ASTM, 76, 931-950
  7. Ding, Y.K., Zhang, Y.C. and Zhao, J.X. (2009), "Tests of hysteretic behavior for unbonded steel plate brace encased in reinforced concrete panel", J. Constr. Steel Res., 65(5), 1160-1170. https://doi.org/10.1016/j.jcsr.2008.11.003
  8. Ghowsi, A.F. and Sahoo, D.R. (2015), "Fragility assessment of buckling-restrained braced frames under near-field earthquakes", Steel Compos. Struct., Int. J., 19(1), 173-190. https://doi.org/10.12989/scs.2015.19.1.173
  9. Gong, S. and Zhou, Y. (2016), "Experimental study and numerical simulation on a new type of viscoelastic damper with strong nonlinear characteristics", Struct. Control Health Monit. DOI: 10.1002/stc.1897
  10. Kim, D.H., Ju, Y.K., Kim, M.H. and Kim, S.D. (2014), "Windinduced vibration control of tall buildings using hybrid buckling-restrained braces", Struct. Des. Tall Spec. Build., 23(7), 549-562. https://doi.org/10.1002/tal.1066
  11. Manson, S.S. (1965), "Fatigue: A complex subject-some simple approximations", Exp. Mech., 5(7), 193-226. https://doi.org/10.1007/BF02321056
  12. Metelli, G., Bregoli, G. and Genna, F. (2016), "Experimental study on the lateral thrust generated by core buckling in bolted-BRBs", J. Constr. Steel Res., 122, 409-420. https://doi.org/10.1016/j.jcsr.2016.04.004
  13. Miner, M.A. (1945), "Cumulative damage in fatigue", J. Appl. Mech. ASME, 12(3), 159-164.
  14. Park, J., Lee, J. and Kim, J. (2012), "Cyclic test of buckling restrained braces composed of square steel rods and steel tube", Steel Compos. Struct., Int. J., 13(5), 423-436. https://doi.org/10.12989/scs.2012.13.5.423
  15. Soong, T.T. and Dargush, G.F. (1997), Passive energy dissipation systems in structural engineering. John Wiley and Sons Ltd., UK.
  16. Soong, T.T. and Spencer, B.F. (2002), "Supplemental Energy Dissipation: state-of-the-art and state-of-the-practice", Eng. Struct., 24(3), 243-259. https://doi.org/10.1016/S0141-0296(01)00092-X
  17. Takeuchi, T., Hajjar, J.F., Matsui, R., Nishimoto, K. and Aiken, I.D. (2012), "Effect of local buckling core plate restraint in buckling restrained braces", Eng. Struct., 44, 304-311. https://doi.org/10.1016/j.engstruct.2012.05.026
  18. Talebi, E., Tahir, M.M., Zahmatkesh, F. and Kueh, A.B. (2015), "A Numerical analysis on the performance of buckling restrained braces at fire-Study of the gap filler effect", Steel Compos. Struct., Int. J., 19(3), 661-678. https://doi.org/10.12989/scs.2015.19.3.661
  19. Tsai, K.C., Wu, A.C., Wei, C.Y., Lin, P.C., Chuang, M.C. and Yu, Y.J. (2014), "Welded end-slot connection and debonding layers for buckling-restrained braces", Earthq. Eng. Struct. Dyn., 43(12), 1785-1807. https://doi.org/10.1002/eqe.2423
  20. Wang, C.L., Usami, T. and Funayama, J. (2012), "Improving lowcycle fatigue performance of high-performance bucklingrestrained braces by toe-finished method", J. Earthq. Eng., 16(8), 1248-1268. https://doi.org/10.1080/13632469.2012.703385
  21. Watanabe, A., Hitomi, Y., Saeki, E., Wada, A. and Fujimoto, M. (1988), "Properties of brace encased in buckling-restraining concrete and steel tube", Proceedings of Ninth World Conference on Earthquake Engineering, International Association for Earthquake Engineering, Vol. 4, Tokyo-Kyoto, Japan, pp. 719-724.
  22. Xie, Q. (2005), "State of the Art of Buckling-restrained Braces in Asia", J. Constr. Steel Res., 61(6), 727-748. https://doi.org/10.1016/j.jcsr.2004.11.005
  23. Xu, Z.D., Wang, D.X. and Shi, C.F. (2011), "Model, Tests and application design for viscoelastic dampers", J. Vib. Control, 17(9), 1359-1370. https://doi.org/10.1177/1077546310373617
  24. Xu, Z.D., Liao, Y.X., Ge, T. and Xu, C. (2016), "Experimental and theoretical study on viscoelastic dampers with different matrix rubbers", J. Eng. Mech. DOI: 10.1061/(ASCE)EM.1943-7889.0001101, 04016051
  25. Zhao, J., Wu, B. and Ou, J. (2011), "A novel type of angle steel buckling-restrained brace: Cyclic behavior and failure mechanism", Earthq. Eng. Struct. Dyn., 40(10), 1083-1102. https://doi.org/10.1002/eqe.1071