Study on Structural Service Performance of Heavy-Haul Railway Tunnel with Voided Base

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Void conditions</td><td class="align_center" colspan="2">Void dimensions</td><td class="align_left"></td></tr><tr class="thead"><td class="align_center">Void width (m)</td><td class="align_center">Void thickness (cm)</td><td class="align_center">Peak values of maximum principal stress (MPa)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Void</td><td class="align_center">12</td><td class="align_center">15</td><td class="align_center">2.44</td></tr><tr><td class="align_left">Void</td><td class="align_center">12</td><td class="align_center">20</td><td class="align_center">2.47</td></tr><tr><td class="align_left">Void</td><td class="align_center">12</td><td class="align_center">25</td><td class="align_center">2.49</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Peak value of maximum principal stress (in the case of void width of 12 m).</div>

Advances in Civil Engineering

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Table 7

Table 7: Study on Structural Service Performance of Heavy-Haul Railway Tunnel with Voided Base 