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本文将独立覆盖无网格法(ICMM,Independent Cover Meshless Method)应用于盾构隧道衬砌结构的分析模拟,以解决和避免采用梁-弹簧模型或实体有限元法常遇到的相应困难与难题.ICMM方法使用无网格节点进行任意形状分析区域的离散,在各离散节点的独立覆盖区域上采用多项式的无网格位移函数,具有前处理简单、公式简洁等优点,可以十分方便地实现盾构隧道衬砌、钢筋、接头螺栓、不同管片间的接触面等复杂构件的统一模拟分析,极大简化复杂盾构隧道的分析过程.论文详细介绍了ICMM方法进行盾构隧道分析的基本理论和各种基本构建的实现原理与公式,研制了相应的盾构隧道二维精细化荷载-结构分析程序,并通过算例验证了本文方法的正确性和可靠性.
In this paper, Independent Cover Meshless Method (ICMM) is applied to analyze and simulate the shield tunnel lining structure to solve and avoid the corresponding difficulties and problems often encountered with beam-spring model or solid finite element method. The ICMM method uses a meshless node to discretize the area of arbitrary shape analysis, and uses a polynomial meshless displacement function in the independent coverage area of each discrete node, which has the advantages of simple preprocessing and simple formula, and can be conveniently implemented Tunnel lining, steel bar, joint bolt, contact interface between different pieces of steel and other complex components of the unified simulation analysis, greatly simplifying the complex shield tunnel analysis process.This paper describes in detail the ICMM shield tunneling theory and The principle and formula for the basic construction of the two kinds of shield tunneling are developed. The corresponding two-dimensional refinement load-structure analysis program of shield tunnel is developed. The correctness and reliability of the proposed method are verified by an example.