A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam

<table class="table-group" id="tab17"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Spans</td><td class="align_center">Natural frequency values</td><td class="align_center">AF values, 1st measurement time (%)</td><td class="align_center">AF values, 2nd measurement time (%)</td><td class="align_center">AF values, 3rd measurement time (%)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left" rowspan="5">4</td><td class="align_center"><i>f</i><sub>1</sub> = 4.9</td><td class="align_center">36</td><td class="align_center">60</td><td class="align_center">75</td></tr><tr><td class="align_center"><i>f</i><sub>2</sub> = 6</td><td class="align_center">32</td><td class="align_center">40</td><td class="align_center">50</td></tr><tr><td class="align_center"><i>f</i><sub>3</sub> = 8.4</td><td class="align_center">41</td><td class="align_center">40</td><td class="align_center">41</td></tr><tr><td class="align_center"><i>f</i><sub>4</sub> = 9.8</td><td class="align_center">32</td><td class="align_center">30</td><td class="align_center">31</td></tr><tr><td class="align_center"><i>f</i><sub>5</sub> = 12.3</td><td class="align_center">27</td><td class="align_center">13</td><td class="align_center">0</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Characteristics of natural frequencies of the 4th span of Thu Duc 2 flyover bridge through 3 different measurement periods.</div>

Shock and Vibration

tab17

Table 17

Table 17: A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam 