CFG桩复合地基中褥垫层的抗震性能分析

The Aseismatic Porperties Analysis about the Cushion in the Cement Fly-ash Gravel Pile Composite Foundation

水平地震时,用水平剪力代替上部结构的地震作用后,利用剪力层法求解出了褥垫层的运动微分方程,从而可反演出褥垫层内的水平动剪力传递过程。由实例分析可知:放置适当厚度的褥垫层,可减少了上部结构的水平地震作用;褥垫层的存在,在一定程度上提高了整个CFG桩复合地基的抗震性能。

Only considering the lateral earthquake, the differential equation of motion for the cushion can be derivated by using the new method of shearing force layer after the seismic effect of super-structure is replaced by the lateral shearing force. As the example抯 analytical conclusion, the cushion does not magnify the earthquake-induced motion of super-structure, but it improves aseismatic properties of the whole CFG pile composite foundation contrarily.