Development of Rocking Isolation for Response Mitigation of Elevated Water Tanks under Seismic and Wind Hazards

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr class="thead"><td class="align_left">Risk Category</td><td class="align_center"><i>V</i> (m/s)</td><td class="align_center">Exposure Category</td><td class="align_center">Enclosure Classification</td><td class="align_left"><i>K</i><sub><i>d</i></sub></td><td class="align_center"><i>K</i><sub><i>zt</i></sub></td><td class="align_center"><i>K</i><sub><i>e</i></sub></td><td class="align_center"><i>G</i></td><td class="align_center"><i>K</i><sub><i>z</i></sub> (<i>α</i> = 0.9, <svg height="11.6726pt" id="M168" style="vertical-align:-5.52901pt" version="1.1" viewbox="-0.0498162 -6.14359 12.0493 11.6726" width="12.0493pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M475 445L452 468C423 436 401 426 385 426S352 427 305 436C268 443 216 448 185 448C156 448 128 425 102 382C89 360 77 338 64 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460 386Z"></path></g></svg> = 274)</td><td class="align_center"><i>C</i><sub><i>f</i></sub></td></tr><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr><td class="align_left">IV</td><td class="align_center">45.0</td><td class="align_center">C</td><td class="align_center">Partially open</td><td class="align_center">1.0</td><td class="align_center">1.0</td><td class="align_center">1.0</td><td class="align_center">0.85 (rigid structure)</td><td class="align_center"><span style="width: 158.806ptpx;"><svg height="69.6971pt" id="M169" style="vertical-align:-31.5211pt" version="1.1" viewbox="-0.0498162 -38.176 158.806 69.6971" width="158.806pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,2.989,-10.515)"><path d="M412 140C382 77 369 73 315 73H129L270 222C362 320 402 379 402 466C402 571 322 635 234 635C177 635 130 609 99 576L42 495L64 475C90 514 133 568 201 568C274 568 318 519 318 435C318 349 255 267 193 193C144 135 87 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386Z"></path></g></svg></span></td><td class="align_center">0.7</td></tr><tr class="table-tr"><td colspan="10"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Design wind load parameters of the circular shaft and tank.</div>

Shock and Vibration

tab3

Table 3

Table 3: Development of Rocking Isolation for Response Mitigation of Elevated Water Tanks under Seismic and Wind Hazards 