| 研究実績の概要 |
This research is mainly to develop a mesoscale analyzing system for the frost damage problems of concrete structures, together with the combining effects by external loads. Till now, the comprehensive physical and mechanical model, as well as the numerical method are still absent, which are the main purposes of this research project.The current finished schedule follows the research plan well. The detailed work are as follows:
1. The theoretical physical model has been developed to calculate the pore pressures generated inside the concrete material during under different temperatures and environmental conditions. This calculated pressures are essential to understand the frost damage mechanism and further mechanical modeling. (One journal paper was published)
2. The mesoscale simulation model has been developed based on Rigid Body Spring Model (RSBM), and the using the pore pressure model developed above, the material deformation can be simulated. (One journal paper is under review)
3. Based on the multi-phase composite theory, the expression of effective elastic modulus of concrete with different amount of ice, liquid water and air is developed. The numerical model of the combined effect is developed using RSBM and the static strengths are simulated. (One journal paper is under writing)
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The whole research project can be divided into 4 steps: 1. Physical model of the pore pressures during frost action; 2. The mechanical model and numerical simulation of pure frost damage; 3. The modeling and simulation of combined frost action and static loading; 4. The study of combined frost action and fatigue loading. And currently, the first three steps have been finished.
The current finished schedule follows the research plan well. Two journal papers (one published, one under review) for the physical model and numerical simulation of pure frost damage; one paper (under writing) for the modeling and simulation of combined frost action and static loads; the combined effect with fatigue loading is now under study.
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