| With the development of modern construction and its ever-increasing height and span, thetraditional reinforced concrete structures can no longer meet the requirements. As the columnsat the bottorn of high-rise buildings and super-tall buildings carry huge axial compression, if westill use the common reinforced concrete columns, we must add the size, which decreasefunction and leads to short columnswith badseismicbehavior. Thespecimens hashigh strength,fine plasticity, so it is adapted to the development of modern structures toward big-span, tallbuidings, and industrialization. This thesis carries out the seismic experimental research on fivespecimens.Themajorpartincluding:According to research experimentally, failure mechanism, strength, hysteretic loops,ductility, stiffness, and the energy which is absorbed are researched. Experiment demonstratesthatthecolumnhas plumphystereticloops,highconsumption ofenergy.The influences of axial-pressure ratio and steel index are discussed. We can discover thatwhen the steel ratio grow, the ductility grow largely; in addition, when the axial-pressure ratiohavebeengrowed,ductility ofthecolumnisdroped. |
PDF Full Text Request