| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
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| Outline of Final Research Achievements |
The purpose of this study is to refine a bearing capacity analysis method and advance bearing capacity equations of rigid footing. A rigid-plastic finite element method was improved to be highly accelerated, a coupled soil-water analysis method was developed, and constitutive equations for linear and nonlinear yield functions of geomaterials were introduced. From the case study analyses of various conditions, limit load surfaces for combined vertical, horizontal, and moment loads on strip footing were formulated for base ground from cohesive to sandy and intermediate soils. The applicability of the coupled soil-water analysis to the practice was clarified by comparing the results of caisson foundation with those of centrifuge model tests under the condition where seepage forces act on the ground. For sandy soils, a bearing capacity equation was developed that takes into account the effect of footing size by modeling the internal friction angle depending on confining pressure.
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