【摘要】 采用Voigt粘弹性模型,应用能量分析法,利用地震波的耗损能量等于土体产生的变形能这一原理对动应力进行了初步研究,提出一个求解动应力的简化公式,该式不仅能反映地震性质的影响,而且能反映场地位置的影响,并且回避了动力作用过程这个复杂的问题.通过对1976年唐山地震实例的对比分析表明,文中提出的动应力公式比较简单实用,计算结果合理,物理概念明确,便于工程推广和应用.更多还原

【Abstract】 Based on the Voigt model and the principle that the energy attenuation of seismic waves equals the deformation energy of soil, an energy method for calculation of the dynamic stress of soil was proposed. The method can not only reflect the impacts of the property and location of earthquakes, but also avoid considering the process of dynamic action. A comparative analysis of the dynamic stress of soil at seven sites in the Tanshan Earthquake (1976) indicates that the method is simple and practical, and that the results conform to those of the dynamic finite element method.更多还原