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INVESTIGATION ON FRACTURE BEHAVIOR OF WELDED STEEL STRUCTURE BEAM-COLUMN CONNECTIONS UNDER EARTHQUAKES

Yao Guochun Huo Lixing Zhang Yufeng Yang Xinqi (Tianjin University Tianjin 300072)  
In the recent earthquakes which occurred in USA and Japan, damages to many buildings resulted from the brittle fracture of beam-column connections. Brittle fracture is mainly due to variables of welding, and it is also affected by some factors of structure. In this paper the affecting factors of brittle fracture are analyzed with the actual examples of fracture. The study shows that brittle fracture of welded steel structure beam-column connections started at the stress concentrated zone. Finally, the ways of preventing brittle fracture are discussed.
【Fund】: 国家自然科学基金资助项目!(59975066)
【CateGory Index】: TU39
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