Effect of Fiber Angles on Hybrid Double-Tube Concrete Columns under Monotonic Axial Compression

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Fiber angles</td><td class="align_center"><svg height="12.7178pt" id="M7" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 12.66 12.7178" width="12.66pt" 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="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.721,3.132)"><path d="M576 34L567 61C554 54 531 44 505 44S447 60 447 141V397H554C566 405 569 427 560 437H447V569L433 572L368 504V437H180V463C179 563 189 607 204 629C217 649 235 659 258 659C285 659 317 642 335 624C344 615 351 615 359 620C369 627 378 637 382 646C388 658 386 671 375 682C361 697 337 710 300 712C264 707 229 690 191 659C135 614 118 562 111 539C105 518 101 492 101 461V437H52L26 408L31 397H101V104C101 41 94 33 31 26V0H253V26C187 32 180 40 180 105V397H368V107C368 27 403 -12 466 -12C476 -12 490 -8 508 0L576 34Z"></path></g></svg> (MPa)</td><td class="align_center"><svg height="9.23375pt" id="M8" style="vertical-align:-3.27284pt" version="1.1" viewbox="-0.0498162 -5.96091 10.9376 9.23375" width="10.9376pt" 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="M387 375C387 402 357 448 257 448C172 448 82 404 82 326C82 289 108 255 156 241V239C85 223 23 181 23 116C23 39 89 -12 182 -12C265 -12 336 31 378 91L361 114C320 73 269 47 216 47C157 47 115 82 115 137C115 191 160 219 218 219C243 219 262 218 272 217L304 259L302 266C295 265 281 264 255 264C195 264 163 294 163 335C163 377 200 416 249 416C293 416 321 389 329 342C331 332 335 329 341 329C355 329 387 352 387 375Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,5.005,3.132)"><path d="M576 34L567 61C554 54 531 44 505 44S447 60 447 141V397H554C566 405 569 427 560 437H447V569L433 572L368 504V437H180V463C179 563 189 607 204 629C217 649 235 659 258 659C285 659 317 642 335 624C344 615 351 615 359 620C369 627 378 637 382 646C388 658 386 671 375 682C361 697 337 710 300 712C264 707 229 690 191 659C135 614 118 562 111 539C105 518 101 492 101 461V437H52L26 408L31 397H101V104C101 41 94 33 31 26V0H253V26C187 32 180 40 180 105V397H368V107C368 27 403 -12 466 -12C476 -12 490 -8 508 0L576 34Z"></path></g></svg> (%)</td><td class="align_center"><svg height="11.9087pt" id="M9" style="vertical-align:-3.2728pt" version="1.1" viewbox="-0.0498162 -8.6359 13.8866 11.9087" width="13.8866pt" 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="M593 650H142L136 622C219 616 224 611 209 531L130 120C114 39 108 34 23 28L17 0H501C518 32 557 130 568 158L540 169C519 132 495 93 469 70C439 43 409 35 332 35C272 35 241 37 225 50C211 61 211 89 222 149L253 320H350C441 320 443 312 441 239H471L510 434H481C455 366 448 358 360 358H260L303 572C311 613 312 615 348 615H431C509 615 522 603 532 581C544 555 546 531 545 491L574 493C583 555 592 631 593 650Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.943,3.132)"><path d="M576 34L567 61C554 54 531 44 505 44S447 60 447 141V397H554C566 405 569 427 560 437H447V569L433 572L368 504V437H180V463C179 563 189 607 204 629C217 649 235 659 258 659C285 659 317 642 335 624C344 615 351 615 359 620C369 627 378 637 382 646C388 658 386 671 375 682C361 697 337 710 300 712C264 707 229 690 191 659C135 614 118 562 111 539C105 518 101 492 101 461V437H52L26 408L31 397H101V104C101 41 94 33 31 26V0H253V26C187 32 180 40 180 105V397H368V107C368 27 403 -12 466 -12C476 -12 490 -8 508 0L576 34Z"></path></g></svg> (GPa)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">±45°</td><td class="align_center">113.5</td><td class="align_center">3.03</td><td class="align_center">3.9</td></tr><tr><td class="align_left">±60°</td><td class="align_center">413.4</td><td class="align_center">1.73</td><td class="align_center">24.0</td></tr><tr><td class="align_left">±80°</td><td class="align_center">562.2</td><td class="align_center">1.55</td><td class="align_center">36.2</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Properties of FRP rings under hoop tension.</div>

Advances in Civil Engineering

tab2

Table 2

Table 2: Effect of Fiber Angles on Hybrid Double-Tube Concrete Columns under Monotonic Axial Compression 