2009.N0.:5,,,,,,,。:(1),9235fy姨15k235fy姨,k,。(2),,,,。,,,,170235fy姨。:[1].[M]..:,2008:405-471.[2].[M]..::60-115.[3].[M]..:.[4]ANSI/AISC360-2005,AnAmercianNationakStandard[S].SpecificationforStructuralSteelBuildings,Chicago,IL,March,2005.[5]GB50017-2003[S]...,,,。,。,,,,。,,,。,。,,,。,,,。,,,,l∶0.2(),、。,,。,,,,,。(:《》)1087235