Location

London

Event Website

http://www.csce2016.ca/

Description

To enhance the resiliency of framed structures under lateral loads, new infilled frame systems have been developed and evaluated using finite element method. The developed frame systems include haunches to reduce stress concentration at the frame’s corners under lateral in-plane loads thus improving the resistance of the infilled frame system. A previously developed and validated three dimensional finite element models based on the simplified micro-modelling technique were adopted in this study to investigate the behaviour of infilled steel and reinforced concrete frames under lateral in-plane loads. The investigated parameters include: the infill wall stiffness, the presence and size of haunches at the beam-column connections. The effect of infill wall stiffness was investigated by analysis of steel and concrete frames infilled with grouted infill walls, which were found to significantly improve the lateral strength and stiffness of the infilled frames. The effect of the size of the haunches on the lateral behaviour of infilled frames was investigated by adding 200 mm, 400 mm, and 600 mm equal-leg haunches at the frame’s beam-column connections. The lateral load resistance of infilled steel and reinforced concrete frames was found to increase by about 60% and 20%, respectively, when 600 mm equal-leg haunches were introduced. The Canadian standard for the design of masonry structures gave conservative estimates for the lateral cracking strength of the studied infilled frames. The accuracy of this standard was found to depend on the lateral stiffness of the bounding frames and the stiffness of the infill wall.


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Jun 1st, 12:00 AM Jun 4th, 12:00 AM

STR-913: NON-LINEAR FINITE ELEMENT ANALYSIS OF MODIFIED INFILLED STEEL AND CONCRETE FRAME SYSTEMS

London

To enhance the resiliency of framed structures under lateral loads, new infilled frame systems have been developed and evaluated using finite element method. The developed frame systems include haunches to reduce stress concentration at the frame’s corners under lateral in-plane loads thus improving the resistance of the infilled frame system. A previously developed and validated three dimensional finite element models based on the simplified micro-modelling technique were adopted in this study to investigate the behaviour of infilled steel and reinforced concrete frames under lateral in-plane loads. The investigated parameters include: the infill wall stiffness, the presence and size of haunches at the beam-column connections. The effect of infill wall stiffness was investigated by analysis of steel and concrete frames infilled with grouted infill walls, which were found to significantly improve the lateral strength and stiffness of the infilled frames. The effect of the size of the haunches on the lateral behaviour of infilled frames was investigated by adding 200 mm, 400 mm, and 600 mm equal-leg haunches at the frame’s beam-column connections. The lateral load resistance of infilled steel and reinforced concrete frames was found to increase by about 60% and 20%, respectively, when 600 mm equal-leg haunches were introduced. The Canadian standard for the design of masonry structures gave conservative estimates for the lateral cracking strength of the studied infilled frames. The accuracy of this standard was found to depend on the lateral stiffness of the bounding frames and the stiffness of the infill wall.

http://ir.lib.uwo.ca/csce2016/London/Structural/65