Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Sequence</td><td class="align_center">Construction sequence</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">Generate the initial stress field</td></tr><tr><td class="align_left">2</td><td class="align_center">Generate existing subway tunnel and buildings; reset displacement to zero</td></tr><tr><td class="align_left">3</td><td class="align_center">Construct support piles</td></tr><tr><td class="align_left">4</td><td class="align_center">Excavation to −0.5 m; slope support</td></tr><tr><td class="align_left">5</td><td class="align_center">Excavation to −1.9 m; construct retaining wall</td></tr><tr><td class="align_left">6</td><td class="align_center">Construction of the inner support system</td></tr><tr><td class="align_left">7</td><td class="align_center">Precipitation to −11 m</td></tr><tr><td class="align_left">8</td><td class="align_center">Excavation to −10.5 m</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

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Table 5

Table 5: Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation 