CAJ | 학술논문

利用DHR9401落锤式冲击试验机完成了两种不同边界约束条件下的12个热轧H型钢柱侧向冲击试验，试验中利用动态应变仪记录了冲击力时程曲线，并获得了试件的破坏形态和残余变形量。试验结果表明：热轧H 型钢柱强轴在侧向冲击荷载的作用下，固-简约束边界务件的试件以发生整体弯曲变形为主，翼缘下支垫刚性平台约束边界的试件以撞击部位的局部屈曲变形为主；边界条件对试件的冲击力时程有显著影响；随着冲击能的增大，试件的残余变形增大，两者之间基本呈线性关系；试件在试验过程中表现出良好的延性性能和抗冲击性能。
이용DHR9401락추식충격시험궤완성료량충불동변계약속조건하적12개열알H형강주측향충격시험，시험중이용동태응변의기록료충격력시정곡선，병획득료시건적파배형태화잔여변형량。시험결과표명：열알H 형강주강축재측향충격하재적작용하，고-간약속변계무건적시건이발생정체만곡변형위주，익연하지점강성평태약속변계적시건이당격부위적국부굴곡변형위주；변계조건대시건적충격력시정유현저영향；수착충격능적증대，시건적잔여변형증대，량자지간기본정선성관계；시건재시험과정중표현출량호적연성성능화항충격성능。
Twelve hot-rolled H-shaped steel column specimens were tested under two different boundary conditions and lateral impact along their major axis using a DHR9401 drop-weight-impact-tester.Time-history curves and residual deformation of specimens were recorded.Based on the experimental data,the dynamic behaviors of steel columns were analyzed and discussed.The test results showed that the overall bending derformation occurs on fixed-simply supported specimens under lateral impact load;furthermore,for the specimens padded with a rigid constraint platform under their flange,local buckling deformation occurs at the collision position;boundary condition of a specimen has an obvious influence on its impact force time-history;overall bending deformation or local buckling deformation of specimens obviously increase with increase in impact energy,both of them reveal a linear relationship;specimens exhibit a good anti-impact performance and ductility in tests.