6-13 地盤の変化が海震荷重に及ぼす影響に関する理論的研究

抄録

This paper is presenting a reasonable numerical calculation method of seismic wave propagation in two-layered medium. The hydrodynamic pressure caused by seaquake is analyzed numerically and its dynamic effects on the floating structure is investigated.In orcler to obtain the solution of the seismic wave field in two-layered medium, the eigen functions on the open boundary and the boundary integral equation are introduced. Furthermore, in order to understand the properties of the effect of the seaquakes on the two-dimensional floating structuare, some typical calculations by using Boundary Integral Equation Method are carried out. Then the effect of seaquake forces acting on the two-dimensional floating structure is investigated from a view point of time structure safty.