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|Author(s):||S Jang; L L. Lu; Fahim Sadek; Emil Simiu;|
|Title:||Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames|
|Published:||December 01, 2002|
|Abstract:||A comparative study is presented of the estimated wind load capacities of low-rise steel building frames based on loading patterns (magnitude and distribution) established from aerodynamic databases on the one hand, and on patterns specified in the ASCE 7 Standard on the other. The estimated capacities are based on the assumption, verified by numerous sets of calculations, and also used in the development of the ASCE 7 Standard, that the most unfavorable wind load occurs at the instant in time when the peak knee-joint bending moment is attained. The estimates are obtained from detailed inelastic finite-element analyses of the frames with ultimate states associated with local and global instabilities. It is shown that the estimates based on the aerodynamic database are more realistic and risk-consistent and can therefore lead to safer designs at lower costs. These estimates represent a significant advance over the ASCE 7 Standard-based estimates.|
|Citation:||Journal of Structural Engineering--ASCE|
|Keywords:||building codes,building technology,database-assisted design,finite element analysis,nonlinear analysis,reliability,steel structures,ultimate strength,wind force|
|Research Areas:||Building and Fire Research|