Analysis of the dynamic response of eccentric, disposable, and arch-shaped bracing systems to earthquakes
This research investigates the dynamic response of the split K braced frame (SKBF), disposable knee braced frame (DKBF), and arch shape braced frame (ASBF) subjected to earthquake loads and the influence of shear, rotatory inertia, and axial force on the frequencies and mode shapes of the vibrating built-in beams. An asymmetric braced model is introduced to study the elastic stability of the arch shaped braced frame. The influence of the axial force on the natural frequencies and the mode shapes of the higher modes of the vibrating built-in beam are also studied. The earthquake loads are simulated by the random process using several built-up computer models. In these generated artificial earthquake models, the Autoregressive/Moving-Average (ARMA) models are used to analyze the San Fernando 1971 and El Centro 1941 earthquake loads. The energy-dissipating plates are used as the devices in the arch-shaped bracing frame in this study for the absorption of the earthquake energy. It is shown that the arch-shaped frame has a uniform story drift variation compared to split-K braced frame. The disposable knee braced frame has small story drift, and the arch-braced frame has no floor damages during earthquakes.
- Research Organization:
- Worcester Polytechnic Inst., MA (USA)
- OSTI ID:
- 6697749
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DYNAMIC LOADS
COMPUTERIZED SIMULATION
EARTHQUAKES
SAFETY ENGINEERING
MECHANICAL STRUCTURES
STRUCTURAL BEAMS
OSCILLATION MODES
DAMAGE
ENGINEERING
SEISMIC EVENTS
SIMULATION
580201* - Geophysics- Seismology & Tectonics- (1980-1989)
420200 - Engineering- Facilities
Equipment
& Techniques
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)