Shield Tunneling under Railway Station Throats in Soft Soil Areas: A Case Study

<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">Monitoring item</td><td class="align_center">Vertical displacement (mm)</td><td class="align_center">Horizontal displacement (mm)</td><td class="align_center">Inclination of catenary column (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Alert (single day)</td><td class="align_center">± 1.6</td><td class="align_center">± 1.6</td><td class="align_center">0.08</td></tr><tr><td class="align_left">Threshold (single day)</td><td class="align_center">± 2</td><td class="align_center">± 2</td><td class="align_center">0.10</td></tr><tr><td class="align_left">Threshold (cumulative)</td><td class="align_center">± 10</td><td class="align_center">± 10</td><td class="align_center">0.50</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Alert and threshold values for the monitoring data.</div>

Advances in Civil Engineering

tab7

Table 7

Table 7: Shield Tunneling under Railway Station Throats in Soft Soil Areas: A Case Study 