论文部分内容阅读
在综合分析模型试验和有限元数值计算结果的基础上得出如下结论:(1) 地震时地下结构及其周围地层组成的系统被激发振动,地层的振动性状在系统中起主导作用。(2) 在水平振动情况下,地层按剪切型振动。地层的变形可以用公式u(z)=Acos(πZ/2H)来描述。(3) 阀明了作用在隧道衬砌上的地震力的发生机理和特点。(4) 全面评价了锚杆的抗震作用。(5) 提供适当的柔度而不丧失承受静载的能力——这是设计具有技术经济效益的抗震隧道衬砌的基本原则。(6) 揭示了现有隧道衬砌结构的薄弱部位。
Based on the comprehensive analysis of the model tests and the numerical results of the finite element analysis, conclusions are drawn as follows: (1) The system composed of underground structure and the surrounding strata is excited by the earthquake, and the formation vibration plays a leading role in the system. (2) Under horizontal vibration, the formation vibrates by shear. Formation deformation can be described by the formula u (z) = Acos (πZ / 2H). (3) The valve shows the mechanism and characteristics of the earthquake force acting on the tunnel lining. (4) A comprehensive evaluation of the seismic effect of the anchor. (5) Proper flexibility is provided without losing the ability to withstand static loads - this is the rationale for the design of a technologically-economical anti-seismic tunnel lining. (6) reveals the weak parts of the existing tunnel lining structure.