SEISMIC ENERGY DEMAND IN STEEL MOMENT FRAMES

The present paper investigates the seismic energy demand in steel moment-resisting frames. The frames, with 3, 6 and 10 storeys, and 4 and 8 spans, are designed according to current seismic code provisions. The energy response (energy quantities and their distributions) in the frames subjected to an ensemble of six earthquake ground motions recorded on different soil conditions, is investigated by nonlinear time history analysis. The study concludes that (1) the results of energy response can be developed into a rational method of seismic evaluation and design for steel moment-resisting frames; (2) the energy concept based on the single-degree-of-freedom has limitations when extended to the realistic structural system for design purposes; and (3) it is necessary to develop the energy-based approach for seismic evaluation and design based on the seismic response of a realistic multi-degree-of-freedom structural system.

[1]  Theodore V. Galambos,et al.  Earthquake Load for Structural Reliability , 1989 .

[2]  Hiroshi Akiyama,et al.  Earthquake-resistant limit-state design for buildings , 1985 .

[3]  C. Uang,et al.  Evaluation of seismic energy in structures , 1990 .

[4]  Egor P. Popov,et al.  Experimental Performance of Seismic Steel Beam-Column Moment Joints , 1995 .

[5]  Peter Fajfar,et al.  Consistent inelastic design spectra: hysteretic and input energy , 1994 .

[6]  Kyle E. Juracek,et al.  Digital inventory of the location of Federal Emergency Management Agency (FEMA) Flood Insurance Studies in Kansas, July 1, 1996 , 1997 .

[7]  Alphan Nurtuǧ,et al.  Prediction of seismic energy dissipation in SDOF systems , 1995 .

[8]  Egor P. Popov,et al.  Cyclic Behavior of Large Beam-Column Assemblies , 1985, Engineering Journal.

[9]  D E Castaneda.  LOAD AND RESISTANCE FACTOR DESIGN (LRFD) RATING OF DAMAGED PRESTRESSED CONCRETE BRIDGES , 1996 .

[10]  Hiroshi Akiyama,et al.  Prediction of earthquake energy input from smoothed fourier amplitude spectrum , 1994 .

[11]  A. G. Brady,et al.  A STUDY ON THE DURATION OF STRONG EARTHQUAKE GROUND MOTION , 1975 .

[12]  E P Popov,et al.  PERFORMANCE OF LARGE SEISMIC STEEL MOMENT CONNECTIONS UNDER CYCLIC LOADS , 1989 .

[13]  Egor P. Popov,et al.  On seismic steel joints and connections , 1989 .

[14]  Bertero,et al.  CYCLIC LOADING OF STEEL BEAMS AND CONNECTIONS , 1973 .

[15]  Pierre Léger,et al.  Seismic-Energy Dissipation in MDOF Structures , 1992 .

[16]  Vitelmo V. Bertero,et al.  Beam-Column Subassemblages Under Repeated Loading , 1972 .

[17]  H. Kuwamura,et al.  Prediction of earthquake energy input from smoothed fourier amplitude spectrum , 1994 .

[18]  Peter Fajfar,et al.  Seismic demand in medium‐ and long‐period structures , 1989 .

[19]  G. W. Housner,et al.  Limit Design of Structures to Resist Earthquakes , 1956 .