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一、前言众所周知,圆环是一种理想的均匀受荷结构。目前,在含水量较大的软土地层中,采用盾构法施工的地下铁道和越江隧道等工程结构,大多采用圆形装配式衬砌。此类装配式衬砌的受力特性,主要取决于所处地层所能提供的侧向压力的大小,而侧向压力的大小,不仅取决于地层本身的物理力学恃性,还与盾构施工方法及圆环本身的变形有关。在以往的计算中’
First, the preamble As we all know, the ring is an ideal uniform load structure. At present, in soft soil strata with large water content, construction structures such as underground railways and cross-river tunnels constructed by the shield method are mostly circularly-assembled linings. The stress characteristics of such an assembly lining mainly depend on the lateral pressure that the formation can provide. The lateral pressure depends not only on the physico-mechanical dependence of the formation itself, but also on the construction method of the shield And the deformation of the ring itself. In the past calculation ’