本文研究在海床作水平运动情况下,多个大尺度弹性柱体由于辐射波所引起的水动力荷载及其动力响应。该体系的数学模型考虑了结构与流体的相互作用,同时也考虑了柱体相互之间的水动力干扰作用,以及柱体与地基之间的相互作用。文中逐个分析了上述几种相互作用对水动力荷载的影响。其结果表明,在自由表面处以及当地震激励频率与体系自振频率接近时,各种相互作用对水动力荷载有明显的影响。 In this paper, we study the hydrodynamic load and dynamic response of several large-scale elastic cylinders due to radiation waves in the horizontal movement of the seabed. The mathematical model of the system considers the interaction between the structure and the fluid, and also considers the hydrodynamic interaction between the cylinders and the interaction between the cylinder and the foundation. The effects of the above-mentioned interactions on hydrodynamic loads are analyzed one by one in the text. The results show that, at the free surface and when the seismic excitation frequency is close to the natural vibration frequency of the system, various interactions have a significant effect on the hydrodynamic load.