土—水下储油罐—可压缩流体相互作用体系地震响应分析

Seismical Response Analysis of the Interaction Between a Submerged Oil Tank and the Surrounding Fluid and Soil

本文主要对地基土——钢筋混凝土水下储油罐——可压缩流体相互作用体系在地震荷载作用下的地震响应进行了分析。考虑了流体可压缩性对齐水面和潜水圆柱体结构物的动水压力的影响。在数值计算中,分析了自由表面重力波及流体可压缩性及考虑流体的可压缩性与不可压缩性对相互作用体系动水压力和地震响应的影响。

In this paper, the seismical response of the interaction between a submerged oil tank and the surrounding compressible fluid and the soil has been studied. In the investigation, the influence of the fluid compressibility on the hydrodynamic pressure at the cylindrical surface of the tank and on the submerged surface are cortsidered. In numerical computations, the influences of the free surface gravity waves, the fluid compressibility or non-compressibility on the hydro-dynamic pressure and on the seismieai response of the interaction system have been calculated. These results may be extended to be used for the seismieal resistanee analysis of submerged structures as caisson foundation of reinforced concrete gravity plateform etc.