Strength of Biaxially Crooked Jumbo Columns

by Le-Wu Lu, Lehigh Univ, United States,
Yixian Gu, Lehigh Univ, United States,
Chia-Ming Lu, Lehigh Univ, United States,
Sheng-Jin Chen, Lehigh Univ, United States,



Document Type: Proceeding Paper

Part of: Building Code Requirements for Masonry Structures (ACI 530-88/ASCE 5-88) and Specifications for Masonry Structures (ACI 530.1-88/ASCE 6-88) (ACI 530.1-88/ASCE 6-88)

Abstract:

The ultimate strength of axially loaded jumbo columns with biaxial initial out-of-straightnesses is analyzed by the finite element method. The analysis makes use of the measured residual stresses on a W14 ? 455 section and assumed as well as measured camber and sweep. The ultimate strengths are compared with those of uniaxially crooked columns and of a light column. Comparison is also made with the column formulas in the AISC Load and Resistance Factor Design Specification.

Subject Headings: Load and resistance factor design | Finite element method | Axial loads | Structural strength | Stress analysis | Steel structures | Steel columns

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