Overall safety assessment of multistory steel buildings subjected to earthquake loads. Evaluation of seismic safety of buildings
Abstract
A set of 140 earthquake records was used to assess the uncertainties involved in ground motion representation. Based on the method of spectral moments, key Kanai-Tajimi parameters were determined for the set of records. The statistics and interdependencies of these parameters were evaluated. The correlation between these K-T parameters, strong motion duration, peak ground acceleration, epicentral distance and local magnitude was investigated. Semi-empirical modifications were made to an existing random vibration solution for single-degree-of-freedom elastoplastic systems. Similar modifications were incorporated in an approximate multi-degree-of-freedom elastoplastic random vibration methodology for shear beam systems, and its validity was assessed by a series of compatibility studies. By using the random vibration methodology, the degree of overall seismic safety was assessed quantitatively for several multistory steel buildings designed by different procedures.
- Publication:
-
Massachusetts Inst. of Tech. Report
- Pub Date:
- June 1980
- Bibcode:
- 1980mit..reptV....L
- Keywords:
-
- Earthquake Resistant Structures;
- Safety;
- Seismology;
- Steel Structures;
- Structural Vibration;
- Degrees Of Freedom;
- Elastoplasticity;
- Power Spectra;
- Structural Stability;
- Engineering (General)