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提出了壳-矩阵-弹簧系统模型,模型以平板壳单元模拟衬砌管片,以矩阵单元模拟衬砌拼装的螺栓,以土弹簧单元模拟衬砌与地层之间的相互作用。采用该模型对衬砌管片错缝拼装下的受力状态进行了分析,解决了采用传统的梁-弹簧模型平面应力-应变方法无法准确把握研究区域应力和变形的问题,可真实地反映衬砌管片结构的力学性态。采用壳-矩阵-弹簧模型分析了影响衬砌管片结构受力性能的不同因素,得出了一些有益的结论,以供盾构隧道衬砌结构设计计算参考。
The model of shell-matrix-spring system is proposed. The model simulates the lining of pipe with flat shell elements, the bolts assembled with linings by matrix elements, and the interaction between lining and formation by soil spring elements. The model was used to analyze the stress state of the lining segment under wrong assembly. The problem that the traditional stress-strain method of the beam-spring model can not grasp the stress and deformation in the study area can be solved, Mechanical properties of sheet structure. The shell-matrix-spring model is used to analyze the different factors that affect the mechanical performance of the liner segment structure. Some useful conclusions are obtained for the design calculation of the shield tunnel lining design.