Numerical examples illustrate the effect of soil-structure interaction on the structures, and deformations of a structure compared with rigid body displacement under gravity second order action.
数值算例表明，土-结构动力相互作用对结构的位移产生较大的影响，由此所引起的重力二阶效应可能使结构抗倾覆性能偏于不安全。
It is of some advantages to use full-rotating equipment to clear underground obstacles such as little destructive effect for undisturbed soil and no disturbing the underground soil body.
某地下车站工程施工时，遇到原有建筑的桩基础需拔除，采用全回转设备清除地下障碍物具有对地下原状土破坏小、基本不扰动地下土体的优点。
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