Abstract
This study examined the effects of inherent defects due to plate assembling and material mismatched condition between base and weld metal on the fatigue strength of beam-to-column connections. Low cycle fatigue tests were carried out on specimens with different plate assembling systems and material mismatched conditions. The test results revealed that the global load-displacement relationships from specimens with different plate assembling systems and material mismatched conditions are similar, meaning these effects involve only local behavior of specimens. However, the fatigue strength of the specimens strongly depends on the location of defects resulting from plate assembling and mismatched conditions. The specimen with the undermatched conditions and the existing defect located closer to the corner of beam-to-column connection tends to have lower fatigue strength. The fracture surfaces indicated that failure patterns of specimen are different regarding mismatched conditions. While the crack propagated through the weld metal for the undermatched condition, it propagated towards the boundary between base and weld metal for overmatched condition. Elasto-plastic shell analysis was performed under the same condition as the experiments. And it is found that when evaluating fatigue strength of beam-to-column connections, the effects of plate assembling system and material mismatched condition should be considered.
Similar content being viewed by others
References
ABAQUS (2006). ABAQUS Analysis’s manual. Volume II, Version 6.6. Hibbitt, Karlsson and Sorensen, Inc., Rhode Island, USA.
ASW (1996). Bridge welding code D1.5-96. American Society of Welding, USA.
Fricke, W. (2001). “Recommended hot spot analysis procedure for structural details of FPSOs and ships based on round-robin FE analysis.” Proc. 11 th International Offshore and Polar Engineering Conference, Stavanger, Norway.
Ge, H., Gao, S., and Usami, T. (2000). “Stiffened steel box columns. Part 1: cyclic behavior.” Journal of Earthquake Engineering and Structural Dynamics, 29, pp. 1691–1706.
Ge, H., Ohashi, M., and Tajima, R. (2007). “Experimental study on ductile crack initiation and its propagation in steel bridge piers of thick-walled box sections.” Journal of Structural Engineering, 53A, pp. 493–502 (in Japanese).
Ishii, Y. and Iida, K. (1969). Low and intermediate cycle fatigue strength of butt welds containing weld defects. The Japanese Society of Non-Destructive Inspection, pp. 443–476.
Iwata, S., Nishi, Y., and Ozamoto, D. (2009). Practical system to monitor and control the penetration depth of welding by submerged arc welding (SAW) with multiple electrodes. JFE Technical Report, No. 14, Japan.
JRA (2002). Specification for highway bridge. Japan Road Association, Japan (in Japanese).
Konishi, T., Miki, C., Hirabayashi, Y., and Shimozato, T. (2004). “Inspection and repair of fatigue cracks in steel bridge piers.” Proc. IIW Annual Assembly, Doc. XIII-2026-04, International Institute of Welding.
Kuwamura, H. and Yamamoto, K. (1997). “Ductile cracks as trigger of brittle fracture in steel.” Journal of Structural Engineering, 123(6), pp. 729–735.
Lemaitre, J. and Desmorat, R. (2005). Engineering damage mechanics. Springer.
Mabota, M., Machida, S., Yoshinari, H., and Nishimura, R. (1992). “Definition of hot spot stress in welded plate type structure for fatigue assessment part2 3rd report-deviation of hot spot stress by finite element analysis.” Proc. IIW Annual Assembly, Doc. XIII-1448, International Institute of Welding.
Miki, C., Aizawa, T., and Anami, K. (1998). “Brittle fracture at beam-to-column connection during earthquake.” Journal of Structural Mechanics and Earthquake Engineering, 591(I-43), pp. 273–281.
Miki, C., Fahimuddin, F., and Anami, K. (2001). “Fatigue performance of butt welded joints containing various embedded defects.” Journal of Structural Mechanics and Earthquake Engineering, 668(I-54), pp. 29–41.
Miki, C., Hirabayashi, Y., Tokida, H., Konishi, T., and Yaginuma, Y. (2002). “Beam-column connection details of steel pier and their fatigue damage mode.” Journal of Structural Mechanics and Earthquake Engineering, 745(I-65), pp. 105–119 (in Japanese).
Miki, C., Ichikawa, A., Sakamoto, T., Tanabe, A., Tokida, H., and Shimozoto, T. (2002). “Fatigue performance of beam-to-column connections with box sections in steel bridge frame piers.” Journal of Structural Mechanics and Earthquake Engineering, 710(I-60), pp. 361–371 (in Japanese).
Miki, C. and Sasaki, E. (2005). “Fracture in steel bridge piers due to earthquakes.” International Journal of Steel Structures, 5(2), pp. 133–140.
Miki, C. and Hirabayashi, Y. (2007). “Fatigue damage cases due to inappropriate fabrication in steel bridge structures.” Journal of Structural Mechanics and Earthquake Engineering, 63(3), pp. 518–532 (in Japanese).
Morikawa, H., Shimozato, T., Miki, C., and Ichikawa, A. (2002). “Study on fatigue cracking in steel bridge piers with box section and temporally repairing.” Journal of Structural Mechanics and Earthquake Engineering, 703(I-59), pp. 177–183 (in Japanese).
Nakagomi, T., Yabe, Y., Kanemoto, H., Yokoyama, S., and Karube, M. (1990). “Study on the influence of inter-pass temperature on strength of welded joints in steel structures.” Journal of Structural Engineering, 36B, pp. 333–340 (in Japanese).
Nakagomi, T., Aoki, H., Sugimoto, K., and Ohbayashi, I. (1996). “Experimental study on the change of property of beam and column of the steel structure which was suffered by Hyogoken-Nambu earthquake.” Journal of Structural Engineering, 511, pp. 141–147.
Okashita, K., Ohminsmi, R., Michiba, K., Yamamoto, A., Tomimatsu, M., Tanji, Y., and Miki, C. (1998). “Investigation of the brittle fracture at the corner of P75 rigid-frame pier in Kobe harbor highway during the Hyogoken-nanbu earthquake.” Journal of Structural Mechanics and Earthquake Engineering, 591(I-43), pp. 243–261 (in Japanese).
Ono, S., Wakabayashi, N., Shimozato, T., Machida, F., and Miki, C. (2004). “Full-size fatigue tests of beam-tocolumn connections for steel piers.” Proc. IIW Annual Assembly, Doc. XIII-2019-04, International Institute of Welding.
Saiprasertkit, K., Hanji, T., and Miki, C. (2011). “Fatigue strength assessment of load carrying cruciform joints with material mismatching in low and high cycle fatigue regions based on effective notch concept.” International Journal of Fatigue, 40, pp. 120–128.
Sugimoto, K. and Takahashi, Y. (1996). “Investigation of beam-to-column connection surface fractures that occurred during the 1995 Hanshin-Awaji earthquake and repair welding heat effect on adjacent steel -inspection of crack growth and analysis of material degeneration.” Steel Construction Engineering Journal, 3(10), pp. 1–6.
Tamura, H., Sasaki, E., Yamada, H., Katsuchi, H., and Chanpheng, T. (2009). “Involvements of stress triaxiality in the brittle fracture during earthquakes in steel bridge bents.” International Journal of Steel Structures, 9(3), pp. 241–252.
Tanabe, A. (2005). Fatigue retrofitting of steel bridge frame piers with high seismic performance. Doctoral Thesis of Tokyo Institute of Technology, Japan (in Japanese).
Tanabe, A., Sasaki, E., and Miki, C. (2005). “Seismic performance of steel bridge frame piers with fatigue retrofitting at beam-to-column connections.” Journal of Structural Engineering, 51A, pp. 1257–1266 (in Japanese).
Tateishi, K., Chen, T., and Hanji, T. (2006). “A new local strain based approach to low cycle fatigue assessment of welded joint.” Steel Construction Engineering Journal, 13(52), pp. 73–81.
Author information
Authors and Affiliations
Corresponding author
Additional information
Note.-Discussion open until February 1, 2013. This manuscript for this paper was submitted for review and possible publication on January 10, 2012; approved on July 27, 2012.
Rights and permissions
About this article
Cite this article
Saiprasertkit, K., Sasaki, E. & Miki, C. Experimental study on low cycle fatigue strength of beam-to-column connections in steel bridge bents with different plate assembling and material mismatching. Int J Steel Struct 12, 351–362 (2012). https://doi.org/10.1007/s13296-012-3005-7
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13296-012-3005-7