【摘要】 以我国西北地区全国重点保护文物安西烽燧和河仓城土遗址为实例建立三维有限元模型,计算分析土遗址在地震动荷载作用下的位移场、应力场特征,探讨其动力响应规律,揭示不同类型土遗址的地震破坏机理。结果表明,土遗址现有病害是抗震薄弱环节,在遭受7度地震作用下处于局部破坏或整体不稳定状态。旨在为土遗址文物的科学保护和抗震加固与减灾提供理论基础和实践依据。更多还原

【Abstract】 In this paper,a three-dimensional finite element model is established by the example of Anxi beacon and Hecangcheng earthen archaeological sites,which are the Skanzens in northwest China.Under the seismic load,the displacement field and stress field features of earthen archaeological sites,as well as the regular pattern of dynamic response are calculated and analyzed.Then,the destructive mechanisms of various earthen sites are revealed.The results demonstrate that the existing malady components of earthen archaeological sites are vulnerable when they encounter earthquake,and they tend to gain partial failure or global instability when subjected to the action with 7 degree earthquake.This paper provides basic theoretical and practical reference for the preservation of the earthen archaeological sites,seismic retrofit and seismic hazard mitigation.更多还原