Simplified Second-Order Analysis of Semirigid Connected Steel Frames

Abstract:

The aim of this paper is to present a practical yet simplified method in the second-order analysis of semirigid connected steel frames. Based on the principle of new shear force distribution method, by taking partial frame as an analytical subassembly model and using a rotation spring which has variable bending stiffness to model flexibility of beam-column connection, this paper derives a simplified non-iterative inner force and lateral deflection computation formula considering P-Delta effects on semirigid connected steel frames. The numerical examples show that semirigid of beam-column connections obviously increases the horizontal displacement and P-Delta effect on the steel frame. Therefore the influences of semirigid connection should been considered in second-order analysis of building steel frame. The presented method is not only relatively practical and easily applicable to manual computation but also has a rather high accuracy, and can be used by the engineers in preliminary design for semirigid connected steel frames.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 846-852
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.846
• Online since: January 2012
• Authors: Wei Liang Xu, Jian Xu
• Keywords: Second-Order Effect, Semirigid Connections, Simplified Analysis, Steel Frame

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DOI: 10.1016/0143-974x(93)90065-z

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