大块式基础的振动,在空间具有六个自由度。当基础重心和基础底面形心在一条铅垂线上时,基础振动可以分解为相互独立的三种运动,即:竖向振动;绕竖向轴的扭转振动;水平和回转耦合振动。这三种运动可以分别计算,其计算方法在一般动力基础书本上都有介绍,但对于埋置基础的动力反应计算方法,目前国内文献很少介绍,国外曾经有巴尔干(Barkan)、诺伐克(Novak)、弗拉埃(Fry) 等发表过研究成果报告。他们一般都在试验室中作小比例埋入基础试验,把土壤作为匀质的,各向同性的弹性半无限体,对埋置基础的问题提出理论性的公式,所有这些理论分析都没有完全解释基础 The vibration of a large foundation has six degrees of freedom in space. When the basic center of gravity and the base bottom centroid are on a vertical line, the base vibration can be decomposed into three independent motions: vertical vibration, torsional vibration around the vertical axis, and horizontal and rotational coupled vibration. These three kinds of movements can be calculated separately, and their calculation methods are described in the basic book of general dynamics. However, for the calculation method of embedded dynamic response, few domestic documents are introduced at present. There have been Balkan and Novarque in foreign countries. (Novak), Fry and others published research results. They generally make a small proportion of basic experiments in the laboratory and use the soil as a homogeneous, isotropic, semi-infinite elastic body to formulate a theoretical formula for the underlying foundation. All these theoretical analyses are not complete. Explain the basics