Structural Safety Assessment of Existing Multiarch Tunnel: A Case Study

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Void location</td><td class="align_center" colspan="4">Void area size (m)</td></tr><tr class="thead"><td class="align_center">&lt;0.5</td><td class="align_center">0.5–1.0</td><td class="align_center">1.0–2.0</td><td class="align_center">&gt;2.0</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Vault</td><td class="align_center">A</td><td class="align_center">2A</td><td class="align_center">3A</td><td class="align_center">3A</td></tr><tr><td class="align_left">Hance</td><td class="align_center">A</td><td class="align_center">2A</td><td class="align_center">3A</td><td class="align_center">3A</td></tr><tr><td class="align_left">Side wall</td><td class="align_center">A</td><td class="align_center">2A</td><td class="align_center">2A</td><td class="align_center">3A</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Grade determination of void behind the liner.

Advances in Materials Science and Engineering

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Table 5

Table 5: Structural Safety Assessment of Existing Multiarch Tunnel: A Case Study 