Abstract
The work reviews the strength calculation of the microtunneling shield housing shell and bed plates of hydraulic cylinders of the mobile set. Based on the requirements for maximum loads on the shield, the analytical calculation of the housing shell thickness and basic design parameters of the tunneling shield bed plate was made. The bending moments and normal forces effecting on the housing were defined in analytical way. The calculation method was offered for the required solid shell of the shield housing considering the allowed values of its deformation due to the necessary construction clearance between the inner surface of the housing shell and mounted support. The numerical modelling of the stress-strain state of the tunneling shield housing was made using the finite-element method on the basis of solid model with due regard to the design peculiarities of the tunneling shield. The numerical modelling confirms the results of analytical calculation of design parameters of the tunneling shield.
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