The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Material</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Deformation modulus (MPa)</td><td class="align_center">Buoyant density (kg·m<sup>−3</sup>)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Backfill soil</td><td class="align_center">0.37</td><td class="align_center">150</td><td class="align_center">1000</td></tr><tr><td class="align_left">Broken stone cushion</td><td class="align_center">0.45</td><td class="align_center">20</td><td class="align_center">900</td></tr><tr><td class="align_left">Immersed tunnel</td><td class="align_center">0.2</td><td class="align_center">30000</td><td class="align_center">—</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

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Table 5

Table 5: The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel 