Research on Static and Dynamic Tests of Steel Orthotropic Decks

Abstract:

The static and crawl tests on the steel orthotropic deck of Xihoumen bridge were performed, which is to study the mechanical behavior and stress history curve of the construction details under traffic loading. The results of the tests reveal that, under the three-axle-weighted 30 t truck, the biggest value of longitudinal stress for the bottom of rib is 51.7MPa，the value of principal stress for the hole upper of diaphragm is 30.8MPa and transversal stress for the deck is 16.7MPa. the length of longitudinal influence line of transversal stress for the deck and vertical stress for the web of rib is about 7.2m. The influences of the principal stress for the opening upper of diaphragm and longitudinal stress for the bottom of rib are 5.4m and10.8m, respectively. Furthermore, the stress range and cycle times were analyzed by sluicing method. Under the condition of the craw tests, cycles of the key details that the stress range is larger than 5MPa for steel orthotropic deck are as follows: the longitudinal stress for the bottom of rib is three times and the biggest value of range is 60.1MPa: the transversal stress for the deck is three times and the biggest value of range is 26.8MPa: the vertical stress for the web of rib is four times and the biggest value of range is 16.1MPa: the principal stress for the hole upper of diaphragm is two times. Finally, Based on the results of dynamic test, and considering the specifications on impact coefficient by various countries, we suggest that impact coefficient shall be adopted in the calculation of fatigue of steel bridge deck; the joints on bridge deck 1+=1.75; for other parts, the calculation of each structure details of longitudinal ribs and deck, 1+=1.0; for calculating lateral girder (diaphragm) details, 1+=1.15.

• Periodical: Applied Mechanics and Materials (Volumes 94-96)
• Pages: 1291-1297
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.94-96.1291
• Online since: September 2011
• Authors: Xiao Guang Liu, Xin Xin Zhao, Yu Ling Zhang
• Keywords: Fatigue, Impact Factor, Static and Dynamic Tests, Steel Orthotropic Deck, Stress

References

[1] CHOI Junhyeok, Kim Dohwan. Stress Characteristics and Fatigue Crack Behaviour of the Longitudinal Rib-to-Cross Beam Joints in an Orthotropic Steel Deck[J]. Advances in Structural Engineering, 2008, 11(2): 189-198.

DOI: 10.1260/136943308784466224

[2] CHOI Dongho, Kim Yongsik. Othotropic Steel Deck Bridge in Korea[C] American Society of Civil Engin -eers. Orthoropic Bridge Conference. Sacramento: Am-eican Society of Civil Engineers, 2008: 125-141.

[3] Xiao Zhigang, KENTARO Y, JIROU I. Fatigue Crac- ks in Longitudinal Ribs of Steel Orthotropic Deck[J]. International Journal of Fatigue, 2006, 28(2): 409-416.

DOI: 10.1016/j.ijfatigue.2005.07.017

[4] INPKUCHI S, KAINUMA S. Field Measurement and Development of an Experimental System for Fatigue-Cracking from Weld Roots between Deck Plate and U-rib in Orthotropic Steel Decks[C] American Society of Civil Engineers .Orthoropic Bridge Conference. Sacramento: American Society of Civil Engineers, 2008: 345-357.

DOI: 10.2208/jsceja.64.297

[5] ZHANG Yuling, Xin Xuezhong, Liu Xiaoguang.. Analysis on fatigue design method of orthotropic floor details in steel bridge[J]. Steel Construction, 2009, 24 (120): 33-37.

[6] XU Wei, ZHANG Xiaoning. Analysis of Distress Characters and Design of Steel Orthotropic Bridge Decks Pavement in China[C]// American Society of Civil Engineers .Orthoropic Bridge Conference. Sacramento: American Society of Civil Engineers, 2008: 184-192.

[7] British Standard Institute, EN1993-2:2006. Design of Steel Structures Part2:Steel bridges[S]. Britain: European Committee for Standardization, 2006.

[8] China Academy of Railway Sciences. Tao Xiaoyan. Model Test for Anchor Cell of Separated Steel Box Girders of Xihoumen Suspension Bridge[R]. Beijing: China Academy of Railway Sciences, 2006.

DOI: 10.18057/ijasc.2015.11.3.8

[9] Qian Dongsheng. Fatigue Design Methods for Steel Bridges[M]. Chengdu: Southwest Jiaotong University Press, 1986.

[10] COOK RD. Finite Element Modeling for Stress Analysis[M]. New York: John Wiley and Sonc Inc, 1995.

[11] ADAMS V, ASKENAZI A, Building Better Produ- cts with Finite Element Analysis[M]. Santa Fe: On Word Press, 1999.

[12] Tong Lewei. Fatigue of Orthotropic Steel Bridge Decks[D]. Shanghai: Tongji University, 1995.

[13] AASHTO. AASTO LRFD bridge design specifica- tions[S]. 2004.

[14] Japan Highway Association. Standard Specifications for Highway Bridge. Maruzen Tokyo, Japan (2002)