论文部分内容阅读
天然地基弹性均压系数是动力机器基础设计中最为重要的参数,根据天然地基弹性均压系数的定义,对当前确定弹性均压系数的几种方法进行了分析,指出GB 50040—96《动力机器基础设计规范》和采用地基土变形模量计算成层地基的弹性均压系数的方法在理论上均是不正确的,而应采用各土层的弹性模量去确定成层地基均压系数。为了便于工程应用,给出了与GB 50040—96相应地基承载力特征值对应的弹性模量值。最后,介绍了利用剪切波波速和标准贯入试验击数确定地基土弹性模量的有关资料。
Based on the definition of elastic foundation pressure coefficient of natural foundation, several methods to determine the elastic pressure equalization coefficient are analyzed. It is pointed out that GB 50040-96 “Power Machinery Basic design code ”and the method of calculating the modulus of elasticity of stratified foundation using the modulus of deformation of foundation soil are not theoretically correct. Instead, the elastic modulus of each soil layer should be used to determine the average pressure coefficient of stratified foundation. In order to facilitate the engineering application, the elastic modulus corresponding to the characteristic value of the foundation bearing capacity of GB 50040-96 is given. Finally, the relevant data for determining the elastic modulus of foundation soil using shear wave velocity and standard penetration test are introduced.