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本文在分析盾尾静力作用特点的基础上,把盾尾当作一端固定一端自由的弹性闭口圆柱中长薄壳,运用圆柱壳有矩理论求解,得出了盾尾应力和位移的分布规律,从而定出了设计盾尾的强度和刚度校核条件;同时用模型试验加以验证.此外,结合盾尾的具体情况,对一般计处公式作了一些简化,并把结果列成表格,便于运用.作用在盾尾上的荷载比较复杂,本文暂沿用目前设计计盾构时所作的沿直方向和水平方向均布的荷载假定,同时亦未考虑施工的影响;因此所得的结论是初步的.
Based on the analysis of the static characteristics of the tail shield, the shield tail is regarded as one end free end elastic thin-walled long cylindrical shell, and the distribution of the tail stress and displacement is obtained by using the moment theory of the cylindrical shell. , So as to determine the strength and rigidity of the design of shield tail checking conditions; at the same time, it is verified by the model test.In addition, with the specific situation of shield tail, some general formulas are simplified and the results are tabulated, The load acting on the tail of the shield is rather complicated. In this paper, the assumption of uniform loading in both the straight and horizontal directions during the current design of the shield is used, and the influence of the construction is not taken into account. Therefore, the conclusion obtained is preliminary.