DOI QR코드

DOI QR Code

Seismic performance of high strength steel frames with variable eccentric braces based on PBSD method

  • Li, Shen (School of Civil Engineering and architecture, Xi'an University of Technology) ;
  • Wang, Ze-yu (School of Civil Engineering and architecture, Xi'an University of Technology) ;
  • Guo, Hong-chao (School of Civil Engineering and architecture, Xi'an University of Technology) ;
  • Li, Xiao-lei (State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi'an University of Technology)
  • 투고 : 2019.06.26
  • 심사 : 2019.11.18
  • 발행 : 2020.05.25

초록

In traditional eccentrically braced steel frames, damages and plastic deformations are limited to the links and the main structure members are required tremendous sizes to ensure elasticity with no damage based on the force-based seismic design method, this limits the practical application of the structure. The high strength steel frames with eccentric braces refer to Q345 (the nominal yield strength is 345 MPa) steel used for links, and Q460 steel utilized for columns and beams in the eccentrically brace steel frames, the application of high strength steels not only brings out better economy and higher strength, but also wider application prospects in seismic fortification zone. Here, the structures with four type eccentric braces are chosen, including K-type, Y-type, D-type and V-type. These four types EBFs have various performances, such as stiffness, bearing capacity, ductility and failure mode. To evaluate the seismic behavior of the high strength steel frames with variable eccentric braces within the similar performance objectives, four types EBFs with 4-storey, 8-storey, 12-storey and 16-storey were designed by performance-based seismic design method. The nonlinear static behavior by pushover analysis and dynamic performance by time history analysis in the SAP2000 software was applied. A total of 11 ground motion records are adopted in the time history analysis. Ground motions representing three seismic hazards: first, elastic behavior in low earthquake hazard level for immediate occupancy, second, inelastic behavior of links in moderate earthquake hazard level for rapid repair, and third, inelastic behavior of the whole structure in very high earthquake hazard level for collapse prevention. The analyses results indicated that all structures have similar failure mode and seismic performance.

키워드

과제정보

The authors are grateful for the financial support received from the National Natural Science Foundation of China (Grant No. 51978571) and the Project Supported by Natural Science Basic Research Plan in Shaanxi Province of China (Program No. 2018JQ5056 and 2019JQ-727) and The Project Supported by Shaanxi Postdoctoral Science Foundation (No. 2018BSHEDZZ24).

참고문헌

  1. AISC341-10 (2010), "Seismic Provision for Structure Steel Buildings", American Institute of Steel Construction, Chicago, U.S.A.
  2. Azad, S.K. and Topkaya, C. (2017), "A review of research on steel eccentrically braced frames", J. Construct. Steel Res., 128(1), 53-73. https://doi.org/10.1016/j.jcsr.2016.07.032.
  3. Ashtari, A. and Erfani, S. (2016), "An analytical model for shear links in eccentrically braced frames", Steel Compos. Struct., 22(3), 627-645. https://doi.org/10.12989/scs.2016.22.3.627.
  4. Bosco, M. and Rossi, P.P. (2009), "Seismic behaviour of eccentrically braced frames", Eng. Struct., 31(3), 664-674. https://doi.org/10.1016/j.engstruct.2008.11.002.
  5. Caprili, S., Mussini, N. and Salvatore, W. (2018), "Experimental and numerical assessment of EBF structures with shear links", Steel Compos. Struct., 28(2), 123-128. https://doi.org/10.12989/scs.2018.28.2.123.
  6. Castaldo, P., Amendola, G. and Palazzo, B. (2016), "Seismic fragility and reliability of structures isolated by friction pendulum devices: seismic reliability-based design (SRBD)", Earthq. Eng. Struct. Dyn., 46(3), 425-446. https://doi.org/10.1002/eqe.2798.
  7. CSI (2012), "Integrated software for structural analysis and design, SAP2000 version 15.2.1", Computer and Structures, Inc., California, U.S.A.
  8. Di, Trapani, F., Bertagnoli, G., Ferrotto, M.F. and Gino, D. (2018), "Empirical equations for the direct definition of stress-strain laws for fiber-section-based macromodeling of infilled frames", J. Eng. Mech., 144(11), 04018101. https://doi.org/10.1061/(ASCE)EM.1943-7889.0001532.
  9. Gino, D., Bertagnoli, G., La Mazza, D. and Mancini, G. (2017), "A quantification of model uncertainties in NLFEA of R.C. shear walls subjected to repeated loading", Int. J. Earthq. Eng., 34(3), 79-91.
  10. Dubina, D., Stratan, A. and Dinu, F. (2010), "Dual high-strength steel eccentrically braced frames with removable links", Earthq. Eng. Struct. Dyn., 37(15), 1703-1720. https://doi.org/10.1002/eqe.828.
  11. FEMA356 (2000), "Seismic Rehabilitation of Buildings", Federal Emergency Management Agency, Washington D.C., U.S.A.
  12. GB50011-2010 (2010), "Code for seismic design of buildings", China Architecture Industry Press, Beijing, China.
  13. Li, S., Tian, J.B. and Liu, Y.H. (2017). "Performance-based seismic design of eccentrically braced steel frames using target drift and failure mode", Earthq. Struct., 13(5), 443-454. https://doi.org/10.12989/eas.2017.13.5.443.
  14. Li, S., Wang, C.Y., Li, X.L., Jian, Z. and Tian, J.B. (2018), "Seismic behavior of K-type eccentrically braced frames with high strength steel based on PBSD method", Earthq. Struct., 15(6), 667-684. https://doi.org/10.12989/eas.2018.15.6.667.
  15. Li, S., Liu, Y.H. and Tian, J.B. (2018), "Experimental and analytical study of eccentrically braced frames combined with high-strength steel", Int. J. Steel Struct., 18(2), 528-533. https://doi.org/10.1007/s13296-018-0018-x.
  16. Li, S., Tian J.B. and Liu Y.H. (2017), "Performance-based seismic design of eccentrically braced steel frames using target drift and failure mode", Earthq. Struct., 13(5), 443-454. https://doi.org/10.12989/eas.2017.13.5.443.
  17. Lian, M., Su, M.Z. and Guo, Y. (2015), "Seismic performance of eccentrically braced frames with high strength steel combination", Steel Compos. Struct., 18(6), 1517-1539. https://doi.org/10.12989/scs.2015.18.6.1517.
  18. Lian, M. and Su, M.Z. (2017), "Seismic performance of high-strength steel fabricated eccentrically braced frame with vertical shear link", J. Construct. Steel Res., 137(10), 262-285. https://doi.org/10.1016/j.jcsr.2017.06.022
  19. Lian, M., and Su, M. Z. (2017), "Experimental study and simplified analysis of ebf fabricated with high strength steel", Journal of Constructional Steel Research, 139(12), 6-17. https://doi.org/10.1016/j.jcsr.2017.06.022.
  20. Mohammadi, R.K. and Sharghi, A.H. (2014), "On the optimum performance-based design of eccentrically braced frames". Steel Compos. Struct., 16(4), 357-374. http://dx.doi.org/10.12989/scs.2014.16.4.357.
  21. Okazaki, T. and Engelhardt, M.D. (2015), "Cyclic loading behavior of EBF links constructed of ASTM A992 steel", J. Construct. Steel Res., 63(6), 751-765. https://doi.org/10.1016/j.jcsr.2006.08.004.
  22. Speicher, M.S. and Iii, J.L.H. (2016), "Collapse prevention seismic performance assessment of new eccentrically braced frames using ASCE 41", Eng. Struct., 117(6), 344-357. https://doi.org/10.1016/j.engstruct.2016.02.018.
  23. Tian, X.H., Su, M.Z., Lian M., Wang, F. and Li, S. (2018), "Seismic behavior of k-shaped eccentrically braced frames with high-strength steel: shaking table testing and FEM analysis", J. Construct. Steel Res., 143(4), 250-263. https://doi.org/10.1016/j.jcsr.2017.12.030.
  24. Wang, F., Su, M.Z., Hong, M., Guo, Y., and Li, S.H. (2016), "Cyclic behaviour of y-shaped eccentrically braced frames fabricated with high-strength steel composite", J. Construct. Steel Res., 120(4), 176-187. https://doi.org/10.1016/j.jcsr.2016.01.007.