地下工程震害与地下地震动的位移特征

Seismic Damage of Underground Engineering and Displacement Characteristics of Sub-Ground Motions

地下工程与地面工程所处的环境不同决定了地震作用对地下结构影响的特殊性,震害经验显示地震动的位移是造成地下结构破坏的主要因素之一.对典型地下工程震害特征进行了总结,结合国外地下地震动台阵记录分析了地震动位移沿深度的分布特点.揭示了地下地震动的一些工程特性,可以为地下工程结构的抗震设计提供参考.

The difference of the environments between embedded and ground structures determines the special effects of earthquake ground motion on underground structures. The earthquake disasters have shown that the displacement of ground motion is one of the main factors that lead to damages of underground structures. The characteristics of earthquake damage of typical underground engineering structures are summarized. The distributive characteristics of earthquake displacement with depth are analyzed based on array records of sub-ground motions from foreign countries. This study reveals the engineering characteristics of sub-ground motions so as to provide reference for the antiseismic design for embedded structures.