Structural Engineering and Mechanics

  • 제43권2호
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  • Pages.147-161
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A curvature method for beam-column with different materials and arbitrary cross-section shapes

  • Song, Xiaobin (Department of Structural Engineering, Tongji University)
  • 투고 : 2010.08.22
  • 심사 : 2012.05.31
  • 발행 : 2012.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a curvature method for analysis of beam-columns with different materials and arbitrary cross-section shapes and subjected to combined biaxial moments and axial load. Both material and geometric nonlinearities (the p-delta effect in this case) were incorporated. The proposed method considers biaxial curvatures and uniform normal strains of discrete cross-sections of beam-columns as basic unknowns, and seeks for a solution of the column deflection curve that satisfies force equilibrium conditions. A piecewise representation of the beam-column deflection curve is constructed based on the curvatures and angles of rotation of the segmented cross-sections. The resulting bending moments were evaluated based on the deformed column shape and the axial load. The moment curvature relationship and the beam-column deflection calculation are presented in matrix form and the Newton-Raphson method is employed to ensure fast and stable convergence. Comparison with results of analytic solutions and eccentric compression tests of wood beam-columns implies that this method is reliable and effective for beam-columns subjected to eccentric compression load, lateral bracings and complex boundary conditions.

키워드

참고문헌

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피인용 문헌

  1. Mechanical Behavior of FRP-Strengthened Concrete Columns Subjected to Concentric and Eccentric Compression Loading vol.17, pp.3, 2013, https://doi.org/10.1061/(ASCE)CC.1943-5614.0000351