Study on the Deterioration Process of Cast-in-Place Hinged Joints in Hollow Slab Bridge under Deicing Salt Environment

Abstract:

Fabricated hollow slab bridge is commonly used in China. It is indicated that the hinged joints between hollow slabs are easily damaged. Especially under the erosion of chloride salt, the destruction process of hinged joints will be greatly exacerbated. In this paper, deicing salt environment was simulated in the lab to corrode the commonly used hinged joints. According to static load test results, hollow slab coordinated working coefficient is explored and the regression calculation formula was established. Then, the time-varying function of the rate of hinged joint steel corrosion was introduced to the regression model. Finally, the constantly evaluating of the hinged joint durability performance of common used deep, middle and low hinged joint forms were also carried out.

• Periodical: Key Engineering Materials (Volume 517)
• Pages: 904-909
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.517.904
• Online since: June 2012
• Authors: Jun Wei, Pei Li, Xia Ban, Rong Zhen Dong
• Keywords: Constantly Evaluating, Coordinated Working Performance, Durability, Hinged Joint

References

[1] CSU Hui. Experimental Research on Optimization of Bridge Slab Structure[D]. Tianjin: Tianjin University(2005).

[2] Wang Yantong. Phenomenon of"Single Beam Bearing"in High - grade Highways and Analysis of It s Reasons [J]. Technology of Highway and Transport, (2004) 29-32.

[3] Hassan Ghanem etl. Chloride Ion Transport in Bridge Deck Concrete under Different Curing Durations [J]. JOURNAL OF BRIDGE ENGINEERING, (2008) 218-225.

DOI: 10.1061/(asce)1084-0702(2008)13:3(218)

[4] Mark G. Stewart and David V. Rosowsky. Structural Safety and Serviceability of Concrete Bridges Subject to Corrosion[J]. JOURNAL OF INFRASTRUCTURE SYSTEMS, (1998) 146-155.

DOI: 10.1061/(asce)1076-0342(1998)4:4(146)

[5] Standard methods for testing of concrete structures（GB 50152-92）[S]. Beijing: China building industry press.

[6] Victor C. Li. Integrated structures and materials design [J]. Materials and Structures, (2007) 387–396.

[7] Lu Tiedin, Tao Benzao, Zhou Shijian. Modeling and algorithm of linear regression based on total least squares [J]. Geomatics and Information Science of Wuhan University, (2008) 504-507.

[8] Wei Jun, Li Pei, Zhang Guofa et al. Experimental Study on Durability Performance of Hollow Slab Hinged Joint [J]. Journal of Huangzhong University of Science and Technology (Natural Science Edition) (accepted).