| 種別 | paper |
| 主題 | Micromechanical Model for Triaxial Behavior of Concrete |
| 副題 | |
| 筆頭著者 | Ahmed M. FRAHAT（Nagoya University） |
| 連名者1 | Masashi KAWAKAMI（Konoike Construction Company） |
| 連名者2 | Tada-aki TANABE（Department of Civil Engineering, Nagoya University） |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 15 |
| 号 | 2 |
| 先頭ページ | 1231 |
| 末尾ページ | 1236 |
| 年度 | 1993 |
| 要旨 | INTRODUCTION The early phenomenological macroscopic models for concrete are based on an almost never-ending process of modifications of the classical theories. However, it is very difficult to imagine that many aspects of the material response can be easily modeled by a unified general theory in which the real mechanical response of the material microstructure is not involved. Thus, the utility of the phenomenological macroscopic models for concrete is at best of limited value. Alternatively an approach, which is known as the microscopic approach and is based on the local view of the material properties, seems to be more promising. This paper focuses on the microscopic approach. CONCLUSIONS A micromechanical model which can accurately predict the triaxial behavior of concrete is developed. The proposed model is constructed in order to accurately consider all possible sorts of microcracks which are apparently localized at the thin as well as the thick layers of mortar between coarse aggregates. The behavior at the contacts with different thicknesses is defined and distinguished. Finally, an explicit formula of the stiffness matrix as the contribution of all contacts with different thicknesses is derived. The conceptual simplicity of the proposed model is rewarded by ease of material identification. The model showed its capability to predict the available test data. |
| PDFファイル名 | 015-01-2208.pdf |