Paper Title:
Effect of Shear Lag on the Long-Term Performance of Long-Span PC Box Girder Bridge
  Abstract

The analysis and mechanism of excessive long-term deflection of long-span prestressed concrete (PC) box girder bridges is concentrated recently. However, because of the lack of computing method, three dimensional (3D) analysis of PC continuous bridge especially including long-term shear lag effect is hard to analyze. According to this, a 3D creep analysis method for long-span PC bridges is illustrated in this paper first. The shear lag analysis of loads, prestress and their combination effect is carried out respectively. Based on this, the effect of shear lag to the long-term deflection of mid-span and whole-shape of the bridge is demonstrated. At the end, the different of computing between analysis with or without considering shear lag is discussed and some suggestion is proposed.

  Info
Periodical
Advanced Materials Research (Volumes 255-260)
Edited by
Jingying Zhao
Pages
1290-1294
DOI
10.4028/www.scientific.net/AMR.255-260.1290
Citation
Y. W. Niu, "Effect of Shear Lag on the Long-Term Performance of Long-Span PC Box Girder Bridge", Advanced Materials Research, Vols. 255-260, pp. 1290-1294, 2011
Online since
May 2011
Authors
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Price
$32.00
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