Steel and Composite Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Experimental investigation on the seismic performance of cored moment resisting stub columns

  • Hsiao, Po-Chien (Department of Civil and Construction Engineering, National Taiwan University of Science and Technology) ;
  • Lin, Kun-Sian (Department of Civil Engineering, National Chung Hsing University)
  • Received : 2020.03.03
  • Accepted : 2021.04.15
  • Published : 2021.05.25
⟨ Previous Next ⟩

Abstract

Cored moment resisting stub column (CMSC) was previously developed by the features of adopting a core segment which remains mostly elastic and reduced column section (RCS) details around the ends to from a stable hysteretic behavior with large post-yield stiffness and considerable ductility. Several full-scale CMSC components with various length proportions of the RCSs with respect to overall lengths have been experimentally investigated through both far-field and near-fault cyclic loadings followed by fatigue tests. Test results verified that the proposed CMSC provided very ductile hysteretic responses with no strength degradation even beyond the occurrence of the local buckling at the side-segments. The effect of RCS lengths on the seismic performance of the CMSC was verified to relate with the levels of the deformation concentration at the member ends, the local buckling behavior and overall ductility. Estimation equations were established to notionally calculate the first-yield and ultimate strengths of the CMSC and validated by the measured responses. A numerical model of the CMSC was developed to accurately capture the hysteretic performance of the specimens, and was adopted to clarify the effect of the surrounding frame and to perform a parametric study to develop the estimation of the elastic stiffness.

Keywords

Acknowledgement

Ministry of Science and Technology, R.O.C. and National Taiwan University of Science and Technology are gratefully acknowledged for financing and supporting the project under the Grants MOST 107-2625-M-011-004.

References

  1. AISC 360-16 (2016), Specification for Structural Steel Buildings, American Institute of Steel Construction; Chicago, Illinois, USA.
  2. ANSI/AISC 341-16 (2016), Seismic Provisions for Structural Steel Buildings. American Institute of Steel Construction; Chicago, Illinois, USA.
  3. ASTM E8/E8M-13a (2013), Standard Test Methods for Tension Testing of Metallic Materials. ASTM International; West Conshohocken, Pennsylvania, USA
  4. Chen, C.H., Tsai, I.J. and Tang, Y. (2017), "Drift concentration of a three-story special concentrically braced frame with strongback under earthquake loading", Appl. Mech. Mater., 863, 287-292. https://doi.org/10.4028/www.scientific.net/AMM.863.287.
  5. Chen, C.H., Tsai, I.J. and Tang, Y. (2019), "Cyclic testing of scaled three-story special concentrically braced frame with strongback column", Earthq. Struct., 17(2), 163-173. https://doi.org/10.12989/eas.2019.17.2.163.
  6. Hsiao, P.C. and Liao, W.C. (2019), "Effects of hysteretic properties of stud-type dampers on seismic performance of steel moment resisting frame buildings", J. Struct. Eng. - ASCE, 145(7), 04019065. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002346.
  7. Hsiao, P.C., Lin, K.S., Liao, W.C., Zhu, L.M. and Zhang, C.W. (2020), "Development and testing of cored moment resisting stub column dampers", Steel Compos. Struct., 34(1), 107-122. https://doi.org/10.12989/scs.2020.34.1.107.
  8. Jones, S.L., Fry, G.T. and Engelhardt, M.D. (2002), "Experimental evaluation of cyclically loaded reduced beam section moment connections", J. Struct. Eng. - ASCE, 128(4), 441-451. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:4(441).
  9. Krawinkler, H., Gupta, A., Medina, R. and Luco, N. (2000), "Loading histories for seismic performance testing of SMRF components and assemblies", SAC Steel Project, Background Documents, SAC/BD-00/10.
  10. Lu, L., Xu, Y., Liu, J. and Lim, J.B. (2018), "Cyclic performance and design recommendations of a novel weak-axis reduced beam section connection", Steel Compos. Struct., 27(3), 337-353. http://dx.doi.org/10.12989/scs.2018.27.3.471.
  11. Macrae, G.A. and Kawashima, K. (1997), "Post-earthquake residual displacements of bilinear oscillators", Earthq. Eng. Struct. D., 26(7), 701-716. https://doi.org/10.1002/(SICI)1096-9845(199707)26:7<701::AID-EQE671>3.0.CO;2-I.
  12. Mazzoni, S., McKenna, F., Scott, M.H. and Fenves, G. (2006), "OpenSees command language manual", Pacific Earthquake Engineering Research (PEER) Center, 264.
  13. Pollino, M., Slovenec, D., Qu, B. and Mosqueda, G. (2017), "Seismic rehabilitation of concentrically braced frames using stiff rocking cores", J. Struct. Eng. - ASCE, 143(9), 04017080. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001810.
  14. Qu, B., Sanchez, J.C., Hou, H. and Pollino, M. (2016), "Improving inter-story drift distribution of steel moment resisting frames through stiff rocking cores", Int. J. Steel Struct., 16(2), 547-557. https://doi.org/10.1007/s13296-016-6023-z.
  15. Simpson, B.G. and Mahin, S.A. (2018), "Experimental and numerical investigation of strongback braced frame system to mitigate weak story behavior", J. Struct. Eng. - ASCE, 144(2), 04017211. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001960.
  16. Uang, C.M. and Fan, C.C. (2001), "Cyclic stability criteria for steel moment connections with reduced beam section", J. Struct. Eng. - ASCE, 127(9), 1021-1027. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:9(1021).
  17. Zahrai, S.M., Mirghaderi, S.R. and Saleh A. (2017), "Increasing plastic hinge length using two pipes in a proposed web reduced beam section", Steel Compos. Struct., 23(4), 421-433. http://dx.doi.org/10.12989/scs.2017.23.4.421.