Abstract
Taking the phase III project of Xi'an Metro Line 1 as the research background, the finite element model of single-track tunnel construction and double-track tunnel construction at the same time is established, and the relationship between the vertical displacement of soil and segment and the internal force of segment is obtained. The results show that: 1) when the double-track tunnel is constructed at the same time, the maximum vertical displacement of soil and segments is less than that of the single-track tunnel; 2) when the double-track tunnel is constructed at the same time, the internal force of the segment is greater than that of the single-track tunnel.
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