非線形連結要素FEMモデルによる基礎浮き上がり動的解析 : 振動台実験のシミュレーションによる精度検討

概要

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This paper proposes a new analytical method that can deal with deformation of the base mat, vertical motion induced by uplift, partial sliding due to decrease in contact pressure, and separation and sliding between the soil and an underground wall. Nonlinear Connecting Elements are attached between the nodal points of the FEM elements to represent uplift phenomena. The Connecting Element sustains no tensile force and begins to slide when shear force exceeds the frictional force. Simulation of the shaking table tests shows that 1) the calculated horizontal response acceleration of the model building and contact ratio of the base correspond closely to the test results, 2) the calculated magnitude of induced vertical acceleration is larger than the test result, but the frequency components and the spectral distribution are similar.
社団法人日本建築学会の論文
1991-09-30