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

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Crack depth a (cm)</td><td class="align_center">KI</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">a = 3</td><td class="align_center">16.3Md + 1.19Nd</td></tr><tr><td class="align_left">a = 6</td><td class="align_center">23.9Md + 1.73Nd</td></tr><tr><td class="align_left">a = 9</td><td class="align_center">29.5Md + 2.83Nd</td></tr><tr><td class="align_left">a = 12</td><td class="align_center">44.6Md + 6.08Nd</td></tr><tr><td class="align_left">a = 15</td><td class="align_center">67.3Md + 10.7Nd</td></tr><tr><td class="align_left">a = 16</td><td class="align_center">93.3Md + 12.8Nd</td></tr><tr><td class="align_left">a = 17</td><td class="align_center">117.2Md + 14.7Nd</td></tr><tr><td class="align_left">a = 18</td><td class="align_center">135.9Md + 17.6Nd</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculation results of stress intensity factor.</div>

Mathematical Problems in Engineering

tab3

Table 3

Table 3: Study on the Influence of Cracks on the Mechanical Performance of Tunnel Lining Structure Based on Fracture Mechanics Theory 