Structural Engineering and Mechanics

  • 제19권6호
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  • Pages.679-705
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  • 2005
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Storey-based stability analysis of multi-storey unbraced frames

  • Liu, Y. (Department of Civil Engineering, University of Waterloo) ;
  • Xu, L. (Department of Civil Engineering, University of Waterloo)
  • 투고 : 2004.06.03
  • 심사 : 2005.01.14
  • 발행 : 2005.04.20
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a practical method to evaluate the effective length factors for columns in multi-storey unbraced frames based on the concept of storey-based elastic buckling by means of decomposing a multi-storey frame into a series of single-storey partially-restrained (PR) frames. The lateral stiffness of the multi-storey unbraced frame is derived and expressed as the product of the lateral stiffness of each storey. Thus, the stability analysis for the multi-storey frame is conducted by investigating the lateral stability of each individual storey, which is facilitated through decomposing the multi-storey frame into a series of single-storey PR frames and applying the storey-based stability analysis proposed by the authors (Xu and Liu 2002) for each single-storey PR frame. Prior to introducing decomposition approaches, the end rotational stiffness of an axially load column is derived and rotational stiffness interaction between the upper and lower columns is investigated. Three decomposition approaches, characterized by means of distributing beam-to-column rotational-restraining stiffness between the upper and lower columns, are proposed. The procedure of calculating storey-based column effective length factors is presented. Numerical examples are then given to illustrate the effectiveness of the proposed procedure.

키워드

참고문헌

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피인용 문헌

  1. Storey-based stability of unbraced steel frames at elevated temperature vol.78, 2012, https://doi.org/10.1016/j.jcsr.2012.06.010
  2. Effective buckling length of steel column members based on elastic/inelastic system buckling analyses vol.26, pp.6, 2007, https://doi.org/10.12989/sem.2007.26.6.651
  3. System buckling analysis for multi-story frames subjected to nonconservative forces vol.15, pp.2, 2015, https://doi.org/10.1007/s13296-015-6003-8
  4. Hybrid-member stiffness matrix accounting for geometrical nonlinearity and member inelasticity in semi-rigid frameworks vol.31, pp.12, 2009, https://doi.org/10.1016/j.engstruct.2009.07.014
  5. A numerical method for buckling analysis of built-up columns with stay plates vol.26, pp.4, 2007, https://doi.org/10.12989/sem.2007.26.4.441
  6. Exact buckling load of a restrained RC column vol.27, pp.3, 2007, https://doi.org/10.12989/sem.2007.27.3.293
  7. Improving the Reliability of Measuring Critical Buckling Load in Sway Mode Frames vol.56, pp.2, 2016, https://doi.org/10.1007/s11340-015-0098-x
  8. Stochastic finite element analysis of structural systems with partially restrained connections subjected to seismic loads vol.9, pp.6, 2009, https://doi.org/10.12989/scs.2009.9.6.499
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  10. Storey-based column effective length factors with accounting for initial geometric imperfections vol.30, pp.12, 2008, https://doi.org/10.1016/j.engstruct.2008.05.015
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  12. Buckling of restrained steel columns due to fire conditions vol.8, pp.2, 2005, https://doi.org/10.12989/scs.2008.8.2.159
  13. Semi-rigid connection modeling for steel frameworks vol.35, pp.4, 2005, https://doi.org/10.12989/sem.2010.35.4.431
  14. Storey-based stability of unbraced steel frames under piece-linear temperature distributions vol.194, pp.None, 2019, https://doi.org/10.1016/j.engstruct.2019.05.064
  15. Story-Based Stability of Multistory Steel Semibraced and Unbraced Frames with Semirigid Connections vol.147, pp.1, 2005, https://doi.org/10.1061/(asce)st.1943-541x.0002874
  16. Tensile Buckling of a Rod with an End Moving along a Circular Guide: Improved Experimental Investigation Based on a Dynamic Approach vol.11, pp.16, 2005, https://doi.org/10.3390/app11167277
  17. Analysis and verification of cable pretension effect on the buckling load of a single-link flexible mechanism vol.104, pp.None, 2005, https://doi.org/10.1016/j.apm.2021.11.034