ANALYTICAL EVALUATION FOR CRACK PROPAGATION OF RC BEAMS

Keigo Tamano; Hikaru Nakamura; Naoshi Ueda; Minoru Kunieda

doi:10.2208/jscejmcs.70.76

Abstract

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RCはり部材に対する曲げひび割れ進展挙動について,クリープ,収縮,コンクリートの硬化過程に伴う材料特性の変化と,鉄筋の付着性状を考慮した3次元有限要素解析を用いて解析的に評価を行った.鉄筋の付着性状を考慮することにより,荷重増加によるRCはり,PRCはりのひび割れ性状およびひび割れ幅について評価できることが示された.また,時間依存挙動を考慮することにより,持続荷重による全体挙動およびひび割れ進展挙動を,強度による材料特性の違いに依らず,妥当に評価できることが示された.さらに,本解析手法を用いて,乾燥収縮量や自己収縮量,乾燥領域,クリープがひび割れ進展挙動に及ぼす影響を検討した.

ANALYTICAL EVALUATION FOR CRACK PROPAGATION OF RC BEAMS

Abstract

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