【摘要】 针对某巨型框架,采用动力有限元时程分析方法,通过土体自由场反应及运动相互作用计算,以及对地基刚性假定模型及土—桩—结构相互作用模型的变形特性的分析,得出结论:多遇地震下土体具有放大地震波的作用,而罕遇地震下却出现折减现象;考虑相互作用后,结构顶部相对位移减小,但在底部几层却有放大现象。更多还原

【Abstract】 With a steel mega-frame structure as the object,the finite element method is adopted in the dynamic interaction.By the calculation of free field response and kinematic interaction and analysis of two different element model,some conclusions are acquired that are as follows: the seismic strength is amplified under frequent seismic but the seismic strength is reduced under strong seismic after free field response and kinematic interaction calculation.The top displacement of the structure is decreased;However,at the bottom the displacement is amplified when the interaction is considered.更多还原