Experimental Research and Analysis on the Flexible Behaviors of High-Strength Concrete Thin-Walled Box Girder

Abstract:

A full test on the flexible behaviors of the long flanges and trapezoidal section high-strength concrete thin-walled box girder has been performed. The deflection horizontal distribution, strain and strain distribution of concrete and reinforced bars in the compressive flanges, strain distribution along rib height have been studied. The results demonstrate that reinforced concrete thin-walled box girder has fine flexible behavior and ductility, strain distribution along rib height agrees with the basic assume, i.e. Plane section before deforming remain plane, and the destructive experimental results disclosed the full process law of shear lag effect and equivalent calculated coefficient of compressed flange width at middle span section, which can be served as a reference for that applying elementary reinforced concrete beam theory settles the ultimate flexural capacity calculation of concrete thin-walled box girder.

• Periodical: Key Engineering Materials (Volumes 400-402)
• Pages: 295-300
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.400-402.295
• Online since: October 2008
• Authors: Ming Qiao Zhu, Zhi Fang, Zhi Wu Yu, Qi Zhi Wei
• Keywords: Box Girder, Bridge Engineering, Effective Width for Compressive Flange, Experimental Analysis, Experimental Research, Flexible Behavior, Shear Lag Effect

References

[1] Edited by Guo Jingqiong. The theory of box girder design. Published by People Communication Press, Beijing , (1991).

[2] Edited by Xiong Haifan, audited by Yao Lingsen. Academic for bridge structure. Published by People Communication Press, Beijing , (2001).

[3] Zhao Shiduo, Deng Xiaohua, Wang Wengzhou. The shear lag effect of concrete thin-walled box girder. Published by People Communication Press, Beijing , (1998).

[4] Zhao Shiduo. The theory of bridge design -the load horizontal distribution 、bend bridge 、the effective width and shear lag. Published by People Communication Press, Beijing , (1986).

[5] Song O. G, Alexander C. Shear-Lag Analysis of T, I, and Box Beams. Journal of Engineering Mechanics, ASCE. 1994, 116(5): 1290-1304.

[6] Alghamdi, S.A. Static and modal analysis of thin-walled box girder structures, AIAA Journal, 2001, 39(7): 1406-1410.

DOI: 10.2514/3.14883

[7] Zhu Mingqiao, the experimental research and analysis of the concrete thin-walled box girder performance of load. The dissertation of Hunan University. Hunan University, (2005).

[8] Luo Qizhi, Wu Youming. The comment and prospect for the shear lag theory of concrete thin-walled box girder. Journal of Foshan University. 2001, 19(3): 29-35.

[9] The P.R. C national standard, the experiment method standard of GB50152-92 concrete structure. China Architecture and Building Press. Beijing , (1992).

[11] The P.R. C major standard. The code for road reinforcement-concrete and prestress concrete bridge design (JTG D62-2004). Published by People Communication Press, Beijing , (2004).

[12] The P.R. C national standard. The code for concrete structure design GB 50010-2002. China Architecture and Building Press. Beijing , (2002).