Experimental Study on the Bending Behavior of Profiled Steel Sheets Following Local Weakening
The vertical and horizontal directions of profiled steel sheets are weakened to various extent,in order to study the bending performance of profiled steel sheets that can be used as load-bearing members in composite floors after local weakening.After the weakening,the steel sheets are subjected to bending tests without lateral restraint to study the bending performance of profiled steel sheets after weakening and their failure modes.The test results show that each group of profiled steel sheets fail mostly due to mid-span flexural buckling failure under uniform load.The horizontal hole reduces the bearing capacity of top flange of steel sheet.The specimen's ability to withstand bending drops by around 15％when the horizontal hole's radius is 20 mm.Additionally,the vertical opening can prevent the upper and lower flanges of steel sheet from transferring stress.The bending capacity of the specimens can be reduced by around 10％when the radius of vertical opening reaches 25 mm.The comparison shows that vertical weakening has a more impact to the bearing capacity than horizontal weakening.
国家科技期刊平台
NSTL
万方数据
