| Project/Area Number |
14350231
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
土木材料・力学一般
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| Research Institution | The University of Tokyo |
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Principal Investigator |
INOUE Junya The University of Tokyo, Graduate School of Engineering, associate professor, 大学院・工学系研究科, 講師 (70312973)
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| Co-Investigator(Kenkyū-buntansha) |
ADACHI Masanobu Tokyo electric power services co., general manager, 技術開発本部, 部長(研究職)
ISHIDA Tetsuya The University of Tokyo, Graduate School of Engineering, associate rofessor, 大学院・工学系研究科, 助教授 (60312972)
MAEKAWA Koichi The University of Tokyo, Graduate School of Engineering, professor, 大学院・工学系研究科, 教授 (80157122)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥14,300,000 (Direct Cost: ¥14,300,000)
Fiscal Year 2003: ¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 2002: ¥8,800,000 (Direct Cost: ¥8,800,000)
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| Keywords | RC structures / numerical analysis / localized deformation / communication protocol / stochastic element free method / virtual material model / 材料の不確定性 / エレメントフリー法 / 地中構造物 / 隅角部 / 寸法効果 / せん断破壊 / 鉄筋配置 / 応力伝達機構 / 非線形解析 / 局部破壊 / 亀裂内浸透流 / 確率モデル / 破壊計測 |
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| Research Abstract |
In general, we still have a difficulty in numerically reproducing a response of the structure in which a localized deformation, such as a buckling of reinforcement steel. Hence, the final goal of the present research was to develop the analysis method which is composed of a standard element with conventional constitutive law and a specially developed element in which responses are obtained through an element experiment separately conducted, and to suggest a new analytical method and new design method which become indispensable when building the above-mentioned system. The research result enumerated below :
(1)Development of prototype to the communication protocol used between analysis and experiment systems
The development of the communication protocol was carried out using so-called Document system in consideration of large-scale sizing, distribution / parallel environment and extendibility of the data. The adopted communication protocol was tested within small-scale LAN, and is found t
… More
o work for the system in which the level of nonlinearity is moderate.
(2)Development of Stochastic Element Free Method
For the purpose of making it possible to model easily not only the indefinite nature of the material but complicated RC structures, an stochastic element fee method is developed. The method is developed by extending the element free galerkin method by either perturbative expansion method or Polynominal Chaos. By comparison with the result of the Monte Carlo simulation in various boundary conditions, the validity and effectiveness of the technique are demonstrated.
(3)Development of self mass adjustment virtual material model
To the junction part and edge part of subterranean ferro-concrete structure, a self mass adjustment type virtual material model, in which reinforcing bar arrangement can be automatically generated, is adopted. From the result, it can be obtained, a design pattern which can be actually applied and which can sustain bending and shear force, with suitable degree. It is notable to say that the present approach becomes more effective when the large-sized component, in which the size effect of shear failure becomes dominant, is considered. Less
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