Influence of Haunches on Performance of Precast-Concrete, Short-Span, Skewed Bridges with Integral Abutment Walls
Publication: Journal of Performance of Constructed Facilities
Volume 22, Issue 2
Abstract
Precast-concrete, skewed bridges with integral abutment walls are, typically, designed as simplified plane rigid portal frames, neglecting the degrading effects of the skew angle, the influence of haunches between the abutment walls and the deck, and laterally unsymmetrical vertical loading. This practice produces underdesigned bridges for certain aspect ratios. It is well known that the higher shear and torsional moments near the obtuse corners cause cracking and local deterioration. To evaluate the limitations of this practice, an experimental and analytical study was carried out for the live load response at the linear service level. It has been observed that for certain bridge configurations, both the positive and negative moment stresses are higher than the stresses given by plane frame analysis. The presented qualitative results enable comparison of performance characteristics.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 22 • Issue 2 • April 2008
Pages: 101 - 107
Copyright
© 2008 ASCE.
History
Received: Jan 25, 2007
Accepted: Oct 22, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
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