Analysis of the Design Method for the Casual Anchor Skeleton at the Closure for PC Continuous Box Girder Bridge

Abstract:

A finite element study was performed to investigate the design method of the casual anchor skeleton at the closure of a PC continuous box girder bridge. Based on a finite element model of a certain four spans PC continuous box girder bridge, we found that the stresses of skeleton calculated with the finite model were 5 percent beyond those with the traditional analytic method. Besides, the tensile stresses increased 19 percent and the compressive ones were 14 percent decreased considered the vertical unbalance temperature and both increased 8 percent for the wind, which were totally ignored in the traditional analytic method. So, the traditional analytic method is inaccurate and unsafe for the casual anchor skeleton design, and the general temperature difference, the vertical unbalance temperature and the wind are better to be considered.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 1011-1017
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.1011
• Online since: June 2013
• Authors: Ting Li, Xing Wang Sheng, Hua Shuai Zhang
• Keywords: Casual Anchor Skeleton, Closure, Nonlinear Finite Element, PC Continuous Box Girder, Unbalance Temperature Load, Wind

References

[1] Lichu Fan: PC continuous box girder. (China Communications Press, Beijing 1988)

[2] Xudong Shao, Lifeng Li, Weigang Bao. Calculation and analysis of transverse temperature stress for concrete box girder. Journal of Chongqing Jiaotong University, 2000, 19(4):5-10(in Chinese).

[3] Jianshu Ye, Lin Jia, Peishu Qian. Observation and research on temperature distribution in concrete box girders. Journal of Southeast University, 2002, 32(5):788-793(in Chinese).

[4] Weijiang Kang. The Research on Sunshine Temperature Effect of Continuous Rigid Frame Bridge. Dissertation for the Master Degree. Changsha: Hunan University, 2000(in Chinese).

[5] Guangqiang Shao. Stress Analysis and Structure Optimization of the Closure for the Pc Continuous Box Girder Bridge. Dissertation for the Master Degree. Changsha: Hunan University, 2000(in Chinese).

[6] Bin Liu, Yuting Xu. New Balance Cantilever Cast Technics for the Closure. Journal of Building Safety, 1999, 14(4):38-40(in Chinese).

[7] Jirao Zhang, Changjiang Wang. PC Continuous Beam Bridge by Cantilever Casting. (China Communications Press，Beijing 2004)(in Chinese).

[8] Airong Chen, Haifan Xiang. A New Calculation Method of the Wind in High Cantilever Construction for Rigid Frame Bridge. Journal of Road, 1998(3)(in Chinese).

[9] Yupeng Cai. Wind Resistance Analysis for High Pier and Long Span Bridge. Journal of China Shipping, 2006,4(4):82-83(in Chinese).

[10] JTG/T D60-01-2004. Code for Design of Highway Bridges. Beijing: China Bridge Industry Press, 2004 (in Chinese).

[11] Sheng Wen, Xiangdong Yu. Study on wind loads response of the Yichang Yangtze River railway bridge during double cantilever erection stages. Journal of Enterprise technology development, 2006, 25(5): 27-29(in Chinese).

[12] Zhigang Liu, Airong Chen. Practical Method for Calculating Equivalent Wind Loads on Double Cantilever Bridges. Journal of Tongji University,2002,30(5):599-603(in Chinese).

[13] Gangliang Liu, Zhongwen Wang, Jianhui Huang and et.Safety investigation of wind for the 270m Continuous Rigid Frame Bridge-Humen Bridge During the Cantilever Casting. Bridge Construction,1995,2:57-60(in Chinese).

[14] Yuanfang Xie. Analysis of Safety of Long Span Continuous Beam Bridge During Cantilever Casting Stage. Dissertation for the Master Degree. Beijing: Beijing Jiaotong University,2011(in Chinese).