SEISMIC DESIGN REQUIREMENTS OF STEEL FRAMES WITH EXTERNAL DIAPHRAGM CONNECTIONS
The nonlinear seismic response characteristics of steel frames with changes in semi-rigid connections were evaluated and compared in terms of the maximum inter-story drift angles and the distribution of the accumulated strain energy among the components of the frame, namely, columns, beams, panel zones, and connections. We prepared 12 frames that were designed by Japanese designers and composed of circular hollow steel columns and wide-flange steel beams connected with external diaphragms. The external diaphragms were represented by rotational springs in the numerical study. To define the strength of the connections, a parameter called connection factor r is introduced. It is the ratio of the final moment capacity of the connection to the full plastic moment of the beam connected to it. A dynamic analysis of the steel frames connected to the semi-rigid connections was conducted by inputting two kinds of seismic waves. From the result of the dynamic analysis, the aseismic design requirements of the steel frames with an external diaphragm can be obtained at the point of the energy absorbance capacity.
multi-storied steel frame beam-to-column connection semi-rigid connection external diaphragm dynamic analysis
W.N. Sui T. Otsuka M. Yamanari
Dept. of Architecture and Building Engineering, Kumamoto University, Kumamoto, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）