Estimating structural damage of steel moment frames by Endurance Time method

Abstract In Endurance Time (ET) method, structures are subjected to gradually intensifying accelerograms and their performance is judged based on the maximum time duration in which they can satisfy the predefined endurance criteria. Damage indexes are used in ET method as the endurance criteria. In this paper, correlation between the values of various damage indexes as obtained from nonlinear time-history analysis of steel moment frames subjected to scaled earthquakes are compared with those from ET method at the same level of spectral acceleration. It is shown that the average value of various damage indexes can be estimated from ET analysis results. Advantages, accuracy and limitations of this procedure are discussed.

[1]  Y. K. Wen,et al.  Damage-Limiting Aseismic Design of Buildings , 1987 .

[2]  Graham H. Powell,et al.  Seismic damage prediction by deterministic methods: Concepts and procedures , 1988 .

[3]  Helmut Krawinkler,et al.  Cumulative damage in steel structures subjected to earthquake ground motions , 1983 .

[4]  Y Bozorgnia,et al.  EVALUATION OF DAMAGE POTENTIAL OF RECORDED EARTHQUAKE GROUND MOTION , 2001 .

[5]  Homayoon E. Estekanchi,et al.  ENDURANCE TIME METHOD FOR SEISMIC ANALYSIS AND DESIGN OF STRUCTURES , 2004 .

[6]  A. Ang,et al.  Seismic Damage Analysis of Reinforced Concrete Buildings , 1985 .

[7]  Dimitrios Vamvatsikos,et al.  Seismic performance, capacity and reliability of structures as seen through incremental dynamic analysis , 2002 .

[8]  Gaetano Manfredi,et al.  The use of damage functionals in earthquake engineering: A comparison between different methods , 1993 .

[9]  Y Bozorgnia,et al.  IMPROVED DAMAGE PARAMETERS FOR POST-EARTHQUAKE APPLICATIONS , 2002 .

[10]  Vitelmo V. Bertero,et al.  IMPROVED SHAKING AND DAMAGE PARAMETERS FOR POSTEARTHQUAKE APPLICATIONS , 2001 .

[11]  Y J Park,et al.  DAMAGE LIMITING A SEISMIC DESIGN OF BUILDINGS , 1987 .

[12]  Vitelmo V. Bertero,et al.  Earthquake Engineering: From Engineering Seismology To Performance-Based Engineering , 2020 .

[13]  Ang A.H.S.,et al.  SEISMIC DAMAGE ANALYSIS OF RC BUILDINGS , 1985 .

[14]  Homayoon E. Estekanchi,et al.  Application of Endurance Time method in linear seismic analysis , 2007 .