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以某核电站的取排水工程为例,将典型核电地震波RG1.60谱人工波作为地震荷载,采用等价线性法对海洋土地基地下隧洞进行了平面有限元地震响应分析,通过计算总结了穿越不同的海洋土土质条件、不同埋深、管片接缝刚度、管片厚度及竖向地震对隧洞的衬砌受力与变形的影响,获得了此类盾构隧洞的动力响应特性规律,为隧洞抗震分析提供了参考依据。
Take a drainage project of a nuclear power plant as an example, the typical nuclear power seismic wave RG1.60 spectrum artificial wave is taken as the seismic load, and the equivalent linear method is used to analyze the plane finite element seismic response of the tunnel under the marine land base. Through calculation, The influence of the different soil depth, the joint stiffness of the seams, the thickness of the seams and the vertical earthquake on the stress and deformation of the lining of the tunnel are obtained. The dynamic response characteristics of the shield tunnel are obtained, Analysis provides a reference.