Analysis of Eccentric Load Causing Torsion Effects of Variable Cross-Section Continuous Box Girder during Cantilevered Casting

Abstract:

The construction with hanging basket eccentric loading was studied for the cantilever casting of a 32m +48 m +32 m continuous box girder. The calculation of center deflecting angles of cantilever box girders with variable cross-section due to pure torsion was derived, and correspondingly a program was developed to calculate this formula. An analysis model of cantilever casting continuous beam bridge with hanging basket eccentric loading was established based on finite elements software, and the shear stress, the longitudinal normal stress and the combined stress of different section were analyzed under different construction process. The torsional effect due to hanging basket eccentric loading was studied and the results are helpful to guide the construction in practice.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 1194-1198
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.1194
• Online since: January 2012
• Authors: Min Xiang, Cong Juan Yang
• Keywords: Box Girder, Cantilever Construction, Hanging Basket Eccentric Load, Torsion Effects

References

[1] Shunquan Qin: Journal of Bridge Construction, (8) (1999), p.73(in Chinese)

[2] Zhen Zheng and Youqin Lin: Journal of Fuzhou University, (4) (1990), p.338(in Chinese)

[3] Qun Xu: Journal of Guangzhou University , (4) (2004), p.160 (in Chinese)

[4] Fangfang Wei, Jing Wu and Jian Feng: Journal of Computational Mechanics, (5) (2007), p.693 (in Chinese)