Study on the Influence of Cracks on the Mechanical Performance of Tunnel Lining Structure Based on Fracture Mechanics Theory

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Crack depth <i>a</i> (cm)</td><td class="align_center">3</td><td class="align_center">6</td><td class="align_center">9</td><td class="align_center">12</td><td class="align_center">15</td><td class="align_center">18</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left"><i>F</i></td><td class="align_center">1.55</td><td class="align_center">1.60</td><td class="align_center">2.13</td><td class="align_center">3.96</td><td class="align_center">6.21</td><td class="align_center">9.37</td></tr><tr><td class="align_left"><i>S</i><sub><i>N</i></sub> (m<sup>−3/2</sup>)</td><td class="align_center">1.19</td><td class="align_center">1.73</td><td class="align_center">2.83</td><td class="align_center">6.08</td><td class="align_center">10.7</td><td class="align_center">17.6</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div><i>F</i> and <i>S</i><sub><i>M</i></sub> values under pure tension.</div>

Mathematical Problems in Engineering

tab2

Table 2

Table 2: Study on the Influence of Cracks on the Mechanical Performance of Tunnel Lining Structure Based on Fracture Mechanics Theory 