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TENSILE FRACTURE ANALYSIS OF FIBER REINFORCED CEMENTITIOUS COMPOSITES WITH REINFORCING BAR AND FRACTURE BEHAVIOR EVALUATION FOCUSING ON BRIDGING FORCE — Hiroki Ogura (2016) | RDL Network
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TENSILE FRACTURE ANALYSIS OF FIBER REINFORCED CEMENTITIOUS COMPOSITES WITH REINFORCING BAR AND FRACTURE BEHAVIOR EVALUATION FOCUSING ON BRIDGING FORCE
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Hikaru Nakamura
Nagoya University
TENSILE FRACTURE ANALYSIS OF FIBER REINFORCED CEMENTITIOUS COMPOSITES WITH REINFORCING BAR AND FRACTURE BEHAVIOR EVALUATION FOCUSING ON BRIDGING FORCE
Article
2016
ja
Authors
HO
Hiroki Ogura
MK
Minoru Kunieda
Hikaru Nakamura
Nagoya University
Abstract
1 min read
本研究では,鉄筋補強した繊維補強セメント系複合材料の引張破壊を,繊維1本1本をモデル化した解析手法を用いて検証した.ひずみ軟化型とひずみ硬化型の繊維補強セメント系複合材料を対象に,繊維の混入率,鉄筋比,鉄筋-マトリクス間の付着特性,ならびに繊維の分布状態を変動させた解析を行い,引張破壊挙動を検証した結果,各パラメータの組合せによっては鉄筋降伏後にひび割れが局所化して進展する場合があることを確認した.そして,そのメカニズムとそれを抑制する方策を,架橋力に着目することによって明らかにした.ひずみ硬化型の材料においては,繊維分布のばらつきに伴う材料不均一性によって力学特性が低下した場合でも,鉄筋との併用により終局ひずみを向上できることを解析から提示した.
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