| 種別 | paper |
| 主題 | Simulation of Discrete Cracking in a Concrete Gravity Dam |
| 副題 | |
| 筆頭著者 | Ali Hassan Chahrour（TAISEI Corporation） |
| 連名者1 | Masayasu Ohtsu（Kumamoto university） |
| 連名者2 | |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 16 |
| 号 | 2 |
| 先頭ページ | 45 |
| 末尾ページ | 50 |
| 年度 | 1994 |
| 要旨 | 1. INTRODUCTION The test performed by Carpinteri et al. on the scaled-down 1:40 model of a concrete gravity dam with an initial notch, subjected to equivalent hydraulic and selfweight loadings, is considered. A two-domain BEM approach, including a formulation for body forces, is applied to analyze crack propagation, based on the linear elastic fracture mechanics (LEFM) criteria. Results obtained from the criteria of the maximum tangential stress, the minimum strain energy density function, the maximum tangential strain, and the maximum energy release rate are compared. The numerical simulations are compared with experimental results and also with the analytical results obtained by Carpinteri et al. using a cohesive fracture model through a finite element code. 6. CONCLUSIONS The investigated four LEFM criteria of the maximum tangential stress, the minimum strain energy density function, the maximum tangential strain, and the maximum strain energy release rate perform equally well in the simulation of mixed-mode cracking in the dam model by two-domain BEM. It is also observed that, for the given loading and boundary conditions of the dam model, the crack is observed to propagate in a pure mode I type of fracture. |
| PDFファイル名 | 016-01-2006.pdf |