An integrated seismic monitoring system with a total of 55 channels of accelerometers is now operating at and in the nearby free-field site of the 20-story steel-framed Atwood Building, in highly seismic Anchorage, Alaska. The building has a single-story basement and a reinforced-concrete foundation without piles. The monitoring system comprises a 32-channel structural and a 21channel site arra...

in this study, the effective parameters on the inelastic response of asymmetric buildings is evaluated for an ensemble of real iranian earthquake records by considering soil-structure interaction. then, the design eccentricity obtained from the inelastic dynamic soil-structure analysis is compared with the design eccentricity of seisimic codes of iran, atc-3, new zeland, canada, mexico, austral...

Parallel manipulators are increasingly used in new applications by exploiting their better characteristics with respect to those of serial manipulators, such as higher stiffness, velocity and acceleration, payload. In this paper, experimental results are presented of a novel application of a 3-DOF CaPaMan (Cassino Parallel Manipulator) prototype to simulate point seismograms and 3D earthquake m...

This report reviews the soil-structure interaction (SSI) researches relating to three major earthquakes recently occurred in Japan, which include the 1993 Kushiro-oki earthquake, aftershocks of the 1993 Hokkaido-Nansei-oki earthquake and the 1995 Hyogo-ken Nanbu earthquake. The review work is focussed on the simulation analyses conducted on the basis of simultaneous earthquake records observed ...

Many mechanical and structural systems respond dynamically to random environmental loads, such as wind, wave or earthquake forces. Examples include flexible buildings vibrating due to turbulent wind loading and offshore structures moving as a result of combining wave and wind loading. To assess the reliability of such structures it is important to predict their dynamic response, at the design s...

Methods of site response analysis require theoretical and empirical testing and validation before they can be used in seismic hazard assessment. Comparison of site amplification function (SAF) calculated using earthquake data recorded by seismic arrays with SAF obtained using analytical approaches represent the most important tests of reliability of those methods. The Treasure Island (TI) downh...

The paper presents a model of a chiral multi-structure incorporating gyro-elastic beams. Floquet-Bloch waves in periodic chiral systems are investigated in detail, with the emphasis on localization and the formation of standing waves. It is found that gyricity leads to low-frequency standing modes and generation of stop-bands. A design of an earthquake protection system is offered here, as an i...

High-frequency seismic waves are generated by abrupt changes of rupture velocity and slip-rate during an earthquake. Therefore, analysis of high-frequency waves is crucial to understanding the dynamic rupture process. Here, we developed a hybrid back-projection method that considers variations in focal mechanisms by introducing a non-planar fault model that reflects the subducting slab geometry...

The Haicheng, China earthquake of February 4, 1975, was the first major seismic event to be predicted. In this paper, long-period teleseismic P waves and S waves from this event are compared directly to time-domain synthetic seismograms to infer the source parameters. Results indicate the focal mechanism of the earthquake is nearly left-lateral strike slip along a northwest striking nodal plane...