Elasto-plastic behavior of circular column-to-H-shaped-beam connections employing 1000 N/mm2-class super-high-strength steel
Super-high-strength steels with yield points of 800-1000 N/mm2 are planned to be used in the near future for building frames. Thus, a design method needs to be established that takes into account the poor welding performance as well as the larger elasticity of these materials. To this end, cruciform circular-column-to-beam connection specimens were tested and analyzed. Frame connections can be made by partial butt welding or super-high-strength bolts using an ordinal outer or ring diaphragm and a horizontal beamhaunch. Tests and analytical results confirmed that the elastic region extends further than that of an ordinary frame made of mild steel by about 1% of story deflection angle. Initial stiffness, yield strength and maximum strength due to local beam buckling can be assessed by ordinary calculation methods. However, the slip andfracture strength of bolted joints using super-high-strength steel and bolts needs further investigation.
N.Tanaka T.Kaneko H.Takenaka S.Sasaki
Kajima Technical Research Institute, Kafima Corporation, Japan Technical Research Institute, Toda Corporation, Japan Technology Development Division, Fujita Corporation, Japan
国际会议
第12届钢管结构国际学术会议(The 12th International Symposium on Tubular Structures)
上海
英文
249-257
2008-10-08（万方平台首次上网日期，不代表论文的发表时间）