Stress Analysis of Simple-Supported Box Girder Deck Pavement under the Effect of Concrete Cushion

Abstract:

In order to study the stress distribution law of simply-supported box girder bridge deck pavement under the effect of triangular concrete cushion, finite element analysis program is used to analyze distribution regularity of stress among asphalt and cement concrete cushion at the thinnest thickness of concrete cushion and transverse slope degree under the action of eccentric load which is applied in the most critical position. The result indicates that the first principal stress in asphalt pavement, the interface normal tensile stress and interface shear stress will reduce when the cushion layer thickness and transverse slope degree increase, however, the thinnest thickness of cushion should not be less than 3 cm. Considering the total weight of structure, cushion thickness should not be too large either. The thinnest cushion thickness of simply supported box girder bridge pavement layer is recommended for 3-4cm while transverse slope for 2-3%.

• Periodical: Applied Mechanics and Materials (Volumes 744-746)
• Pages: 827-831
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.744-746.827
• Online since: March 2015
• Authors: Hu Wang, Fei Han*
• Keywords: Concrete Cushion Layer, Deck Pavement, Interface Shear Stress, Transverse Slope

References

[1] XU Qin-wu, HU Chang-shun, WANG Hu. Mechanic analysis and design of composite type overlay on concrete bridge pavement[J]. Journal of Chang' an University (Natural Science Edition), 2007, 27, (4).

[2] FAN Li-chu, Bridge engineering, China Communications . Press. Beijing . China, Vol, 1, pp.49-50, August. (2012).

[3] JTG D60—2004, General Code for Design of Highway Bridges and Culverts. China Communications . Press. Beijing . China. (2004).

[4] JTG D50—2006, Specifications for Design of Highway Asphalt Pavement. China Communications . Press. Beijing . China. (2006).