A STUDY ON THE MATERIAL OF THE BRITTLE FRACTURED BRIDGE PIER

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  • 阪神大震災により円形断面鋼製橋脚に生じた脆性破壊の材料特性からの検討
  • ハンシン ダイ シンサイ ニ ヨリ エンケイ ダンメン コウセイ キョウキャク ニ ショウジタ ゼイセイ ハカイ ノ ザイリョウ トクセイ カラ ノ ケントウ

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During the Great Hanishin-Awaji Earthquake, many steel bridge structures experienced brittle fractures, following the large scale deformation of their members. Hence, in this work, various material tests are performed on specimens which are made out of damaged steel bridge structures. The plastic strain, induced during the earthquake, is estimated through the change in their material properties. And then, the embrittleness of the steel due to the induced plastic strain is discussed, in order to study the mechanism of the occurrence of the brittle fracture during the earthquake.

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