CAJ | 학술논문

采用ANSYS有限元与试验相结合的方法，研究了板件截面抗弯承载力与抗剪承载力随剪跨比变化的趋势，分析了在跨中单点（两点对称）加载下剪跨比对板件破坏模式的影响规律．结果表明：钢板剥离破坏仅发生在抗剪连接件不完全剪力连接时的板件；在跨中单点（两点对称）加载下，剪跨比小于7．5（7）时，截面抗弯承载力较抗剪承载力充足，试件发生剪切破坏；剪跨比在7．5（7）与10（9）之间时，截面抗弯与抗剪承载力均不足，试件发生弯剪破坏；剪跨比大于10（9）时，截面抗弯承载力较抗剪承载力不足，试件发生弯曲破坏．
채용ANSYS유한원여시험상결합적방법，연구료판건절면항만승재력여항전승재력수전과비변화적추세，분석료재과중단점（량점대칭）가재하전과비대판건파배모식적영향규률．결과표명：강판박리파배부발생재항전련접건불완전전력련접시적판건；재과중단점（량점대칭）가재하，전과비소우7．5（7）시，절면항만승재력교항전승재력충족，시건발생전절파배；전과비재7．5（7）여10（9）지간시，절면항만여항전승재력균불족，시건발생만전파배；전과비대우10（9）시，절면항만승재력교항전승재력불족，시건발생만곡파배．
By combining the ANSYS-based finite element method with the test , the changes of the flexural bearing capacity and shear bearing capacity of specimens with the shear-span ratio are analyzed , and the influence of the shear-span ratio on the failure mode of specimens is investigated respectively under single -point and two-point sym-metric loading on the midspan.The results show that (1) the debonding failure of steel plates occurs only when the shear connection are not complete;(2) under the single-point (two-point symmetric) loading on the midspan with a shear-span ratio of less than 7.5(7), the flexural bearing capacity of section is more sufficient than the shear bearing capacity, so the shear failure of specimens occurs;(3) when the shear span ratio is between 7.5(7) and 10(9), neither the flexural bearing capacity of section nor the shear bearing capacity is sufficient , so the bending shear failure of specimens occurs;and (4) when the shear span ratio is more than 10(9), the flexural bearing ca-pacity of section is more insufficient than the shear bearing capacity , so the bending failure of specimens occurs .