Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Specimen no.</td><td class="align_center">Fitted equations</td><td class="align_center"><i>R</i><sup>2</sup></td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">b2-4-1</td><td class="align_center"><i>P</i> = 0.0971 exp(<i>ε</i><sub>1</sub>/0.0037) − 0.1008</td><td class="align_center">0.9705</td></tr><tr><td class="align_left">b2-4-2</td><td class="align_center"><i>P</i> = 0.1219 exp(<i>ε</i><sub>1</sub>/0.0051) − 0.1373</td><td class="align_center">0.9874</td></tr><tr><td class="align_left">b2-4-3</td><td class="align_center"><i>P</i> = 0.013 exp(<i>ε</i><sub>1</sub>/0.0025) − 0.0321</td><td class="align_center">0.9747</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div><i>R</i><sup>2</sup> is the correlation coefficient between the CCDE and the axial strain.<br/></div></td></tr></table>

<div>The fitted formulas of cumulative energy dissipation coefficient and axial strain.</div>

Advances in Civil Engineering

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Table 8

Table 8: Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths 