【摘要】 为了对隧道结构抗震设计实现以可靠度理论为基础的概率设计方法,必须首先知道地震作用下隧道结构的内力统计特征。为此,从隧道结构地震反应谱出发,基于地层反应位移法,运用误差传递函数,对隧道结构进行不确定性分析,得出隧道结构在地震作用下最不利内力的统计特征。文中以金州隧道Ⅱ类围岩浅埋段为例,运用提出的方法分别求解了小震、中震及大震作用下隧道结构最不利位置处的内力统计特征。更多还原

【Abstract】 The statistic character of the most unfavorable internal force of the tunnel structure under seismic action is necessary for aseismatic design of tunnel structure using probability method on reliability theory.Then based on the responds spectrum of the seismic action on the tunnel structure and the responds displacement of ground under seismic action method,uncertainty analysis for tunnel structure has been done applying error transferring function.The statistic character of the most unfavorable internal force of the tunnel structure under seismic action is gained.Taking shallow part of Jinzhou tunnel as example,the statistical analysis of the most unfavorable locality of the tunnel under different level seismic action is solved respectively using the method putted in this paper.更多还原