Interactive Buckling of Q420 Welded Circular Tubes under Axial Compression

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Limit criterion</td><td class="align_center" colspan="4">D/t</td><td class="align_center"><svg height="14.8173pt" id="M6" style="vertical-align:-5.52897pt" version="1.1" viewbox="-0.0498162 -9.28833 116.264 14.8173" width="116.264pt" 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="M529 97L508 118C475 75 449 58 438 58C428 58 421 66 415 104C393 234 374 403 364 496C345 670 307 712 254 712C220 712 174 691 153 669L161 645C176 653 194 658 206 658C237 658 261 640 278 562C287 522 290 483 293 434C223 269 110 105 23 9L32 -12C59 -6 85 0 108 7C152 64 251 252 300 366C307 297 315 221 337 82C346 24 363 -12 393 -12C425 -12 475 13 529 97Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.761,3.132)"><path d="M398 365C398 411 356 451 297 451C250 451 198 430 151 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375C743 570 607 650 407 650H136L130 622C214 612 220 606 204 526L125 122C110 43 105 36 24 27L17 0H250C382 0 482 23 571 76C680 141 743 248 743 375ZM644 379C644 188 520 36 305 36C277 36 249 38 229 46C205 55 202 71 212 126L293 553C300 588 306 600 317 606C330 613 356 617 390 617C547 617 644 537 644 379Z"></path></g><g transform="matrix(.013,0,0,-0.013,59.301,0)"><path d="M368 703H309L44 -163H104L368 703Z"></path></g><g transform="matrix(.013,0,0,-0.013,64.662,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z"></path></g><g transform="matrix(.013,0,0,-0.013,69.095,0)"><path d="M275 270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z"></path></g><g transform="matrix(.013,0,0,-0.013,73.593,0)"><path d="M275 270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z"></path></g></svg></td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Design code</td><td class="align_center">GB50017-2017 [<a href="/journals/amse/2020/4028907/#B2" target="_blank">2</a>]</td><td class="align_center">DL/T5154-2012 [<a href="/journals/amse/2020/4028907/#B19" target="_blank">19</a>]</td><td class="align_center">ASCE48-05 [<a href="/journals/amse/2020/4028907/#B18" target="_blank">18</a>]</td><td class="align_center">Eurocode 3 [<a href="/journals/amse/2020/4028907/#B16" target="_blank">16</a>]</td><td class="align_center">AS4100 [<a href="/journals/amse/2020/4028907/#B20" target="_blank">20</a>]</td><td class="align_center">AISC 360-10 [<a href="/journals/amse/2020/4028907/#B17" target="_blank">17</a>]</td></tr><tr><td class="align_left">Limit value</td><td class="align_center">100 (235/fy)</td><td class="align_center">26775/fy</td><td class="align_center">26220/fy</td><td class="align_center">90(235/fy)</td><td class="align_center">82</td><td class="align_center">0.11 E/fy</td></tr><tr><td class="align_left">Equal to “GB50017-2017”</td><td class="align_center">100(235/fy)</td><td class="align_center">113(235/fy)</td><td class="align_center">111(235/fy)</td><td class="align_center">90(235/fy)</td><td class="align_center">87(235/fy)</td><td class="align_center">97(235/fy)</td></tr><tr><td class="align_left">Q420</td><td class="align_center">55.95</td><td class="align_center">63.22</td><td class="align_center">62.11</td><td class="align_center">50.36</td><td class="align_center">48.68</td><td class="align_center">54.27</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Existed local buckling limit for circular tubes.</div>

Advances in Materials Science and Engineering

tab5

Table 5

Table 5: Interactive Buckling of Q420 Welded Circular Tubes under Axial Compression 