粗骨材の幾何学的非均質性に着目したコンクリートの圧縮破壊シミュレーション

• 車谷 麻緒

  茨城大学工学部都市システム工学科

• 神野 真弥

  茨城大学大学院理工学研究科都市システム工学専攻

• 寺田 賢二郎

  東北大学災害科学国際研究所

書誌事項

タイトル別名

• Simulation of Compressive Failure in Concrete by Focusing on Heterogeneity due to Coarse Aggregates

抄録

To examine the geometrical effects of aggregates on fracture behavior in concrete, numerical experiments on compressive failure in concrete's meso-structures are carried out in this paper. The method for numerical experiment employed in this paper is capable of simulating compressive failure in quasi-brittle materials involving micro- or meso-scale contact on crack interfaces. First, we explain the modeling of quasi-brittle fracture and the method for numerical experiment. The discrete micro-crack behavior is introduced to a finite element framework in consideration of material inhomogeneity of cement-based materials and by using penalty springs. Then, the basic performance for simulating fracture behavior involving tensile or shear cracks is verified. Finally, the numerical experiments are performed to investigate the effect of heterogeneity due to aggregates in concrete in comparison with the fracture behavior of crushed stone and river stone.

収録刊行物

• 土木学会論文集Ａ２（応用力学）

  土木学会論文集Ａ２（応用力学） 69 (2), I_115-I_123, 2013

  公益社団法人 土木学会

キーワード

• discrete cohesive cracks
• compressive failure
• heterogeneity in concrete
• coarse aggregate
• voronoi diagram
• contact on crack interfaces

詳細情報

• CRID: 1390001205349609088
• NII論文ID: 130004557338
• DOI: 10.2208/jscejam.69.i_115
• ISSN: 21854661
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可