Stress triaxiality is proposed as one of the key parameters to discuss the cause of brittle fracture during earthquakes in steel structures. This study analytically investigated the features of stress triaxiality in steel bridge bent subjected to earthquakes. The target structure is a steel bridge bent actually fractured during the South Hyogo prefecture Earthquake. From the investigations, it was confirmed that high stress triaxiality was generated at a point supposed as fracture origin. There is a possibility that the triaxiality was involved in the fracture strongly through the increase of maximum principal stress. Moreover, from the analyses accounting for several kinds of large earthquake waveforms, it was indicated that threre is possibility that the distribution of triaxiality around the fracture origin was not affected by significantly by each cycle and each waveform.
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Kawase, H. (1998) “Amplification process of strong motion neighborhood of fault by underground mechanics and structure destruction capability.” Proc. Information packet of Panel discussion, 10th Japan earthquake engineering symposium, Japan, pp. 45–50 (in Japanese).
Kuwamura, H. and Yamamoto, K. (1997). “Ductile Crack as trigger of brittle fracture in steel.” Journal of Structural Engineering, ASCE, pp. 729–735.
McClintock, F. A. (1969). “A criterion for ductile fracture by the growth of holes.” Journal of Apple. Mech, 363–371.
Miki, C., Sasaki, E., Kyuba, H. and Takenoi, I. (2000). ”Deterioration of fracture toughness of steel by effect of tensile and compressive prestrain.” Journal of Structural Mechanics and Earthquake Engineering, Japan Society of Civil Engineering, No. 640/I-50, pp. 165–175 (inJapanese).
Okashita, K., Ohminami, 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, Japan Society of Civil Engineering, No. 591/I-43, pp. 243–261 (in Japanese).
Sasaki, E., Arakawa, T., Miki, C. and Ichikawa, A. (2003). ”Required fracture toughness of steel to prevent brittle fracture during earthquakes in steel bridge piers.” Journal of Structural Mechanics and Earthquake Engineering, Japan Society of Civil Engineering, No. 731/I-63, pp. 93-102 (in Japanese).
Schafer B. W., Ojdrovic R. P., Zarghamee M. S. (2000). ”Triaxiality and Fracture of steel moment connections.” Journal of Structural Engineering, ASCE, pp. 1131–1139.
Shama A. A., Zarghamee M. S., Ojdrovic R. P., Schafer B. W. (2003). “Seismic damage evaluation of a steel building using stress triaxiality.” Journal of Engineering Structures, 25, pp. 271–279.
Shimanuki, H. and Hagiwara, Y. (1994). “Effect of stress triaxiality on ductile fracture intiation of steels “Ductile fracture intiation properties of steels (2nd report).” Pre- Prints of the National Meeting of JWS 55, pp. 412–413.
Tamura, H. and Sasaki, E. (2008). “Study on plastic destabilization of steel for prediction of fracture modes.” Proc. 10th International Summer Symposium, Japan Society of Civil Engineering, pp. 41–44
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Tamura, H., Sasaki, E., Yamada, H. et al. Involvements of stress triaxiality in the brittle fracture during earthquakes in steel bridge bents. Int J Steel Struct 9, 241–252 (2009). https://doi.org/10.1007/BF03249498
- stress triaxiality
- brittle fracture during earthquakes
- steel bents