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建于城市浅埋软土中的大量地下建筑(地下商场、展览馆、影剧院、地下铁道、地下停车场、人防工程等),在城市直下型地震的作用下,其主体结构的响应会随着周围场地土环境的不同而表现各异,而主体结构内部的大量非结构构件比主体结构构件更容易遭到破坏。本文在叙述了地下建筑非结构构件的地震灾害之后,借鉴地面工程的分析手段和方法,就地下建筑的非结构构件的地震破坏原因、非结构构件破坏的结构控制概念、以及非结构构件的地震反应等问题作些概念性的分析,最后试图给出一些有效的地下建筑非结构构件的抗震对策。
A large number of underground buildings (underground shopping malls, exhibition halls, theaters, underground railways, underground parking lots, civil air defense projects, etc.) built in shallow soft soils in the city, under the influence of urban direct earthquakes, the response of the main structure will follow the surrounding The performance of the site’s soil environment varies, and a large number of non-structural components within the main structure are more likely to be destroyed than the main structural components. After describing the seismic hazards of the non-structural components of underground buildings, this paper draws on ground engineering analysis methods and methods to analyze the causes of earthquake damage of non-structural components of underground structures, the structural control concepts of non-structural structural damage, and the earthquakes of non-structural components. Some conceptual analysis was made on the response and other issues. Finally, some effective anti-seismic countermeasures for non-structural components of underground buildings were attempted.