Performance Degradation of Subsea Shield Tunnel Segment Accounting for Concrete Strength Loss and Steel Bar Corrosion

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Research method</td><td class="align_center">Thickness of the segment (mm)</td><td class="align_center">Thickness of the cover (mm)</td><td class="align_center">Strength grade of concrete</td><td class="align_center">Diameter of main steel bar (mm)</td><td class="align_center">Steel bar spacing (mm)</td><td class="align_center">Type of main steel bar</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Model test</td><td class="align_center">350</td><td class="align_center">50</td><td class="align_center">C50</td><td class="align_center">20</td><td class="align_center">190</td><td class="align_center">HRB335</td></tr><tr><td class="align_left">Numerical simulation</td><td class="align_center">350</td><td class="align_center">50</td><td class="align_center">C50</td><td class="align_center">20</td><td class="align_center">200</td><td class="align_center">HRB400</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of parameters between model test and numerical simulation.</div>

Shock and Vibration

tab6

Table 6

Table 6: Performance Degradation of Subsea Shield Tunnel Segment Accounting for Concrete Strength Loss and Steel Bar Corrosion 