2012•Shanxi ArchitectureRequires access
On analysis of shield in promoting supervision of mined tunnel
Gao Ka
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Abstract
Taking the shield of some subway in the promotion of the mined tunnel at early construction as the background,the paper undertakes the supervision and analysis of the stress change process of the segment of the shield pushing construction,sums up the pressure change of the segment under the surrounding soil and the change law of the internal force of the segment reinforcement in the shield construction process,indicates the two obvious stages of the segment under the soil pressure along the time and the soil pressure along the ring distribution is uneven and the pressure of the whole soil is not high,the reinforced axial force is increased of the tunnel bottom segment,but the reinforced axial force of the tunnel top segment has unclear change.