Experimental Investigation on the Influence of Regional Concrete Spalling on Shield Tunnel Segments

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_center" colspan="2">Bending stiffness (N·m·rad<sup>−1</sup>)</td><td class="align_center">Groove depth for entity (m)</td><td class="align_center">Groove depth for model (m)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Positive bending</td><td class="align_center">2.44 × 10<sup>8</sup></td><td class="align_center">0.14</td><td class="align_center">0.023</td></tr><tr><td class="align_left">Negative bending</td><td class="align_center">1.46 × 10<sup>8</sup></td><td class="align_center">0.16</td><td class="align_center">0.026</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Gap depth of segment transverse joints.</div>

Advances in Civil Engineering

tab5

Table 5

Table 5: Experimental Investigation on the Influence of Regional Concrete Spalling on Shield Tunnel Segments 