Two-dimensional lattice particle models have been used to simulate dynamic thrust faulting and its effects on near-fault ground motions. The lattice particle modeling approach has been demonstrated as an efficient way to model the dynamic rupture phenomena observed from a foam rubber experiment on dipping faults. We constructed a 42 dipping fault model to simulate near-fault ground motions unde...

An input velocity adjustment method of the critical double impulse (DI) is presented for efficient design viscous dampers elastic-plastic moment frames. The adjusted so that energy to lowest eigenmode under DI equal those selected recorded ground motions. This makes work as active earthquake. response bounding property supported by, (1) multi-modal DI, (2) usual excitation mode motions, (3) lar...

This article deals with the applicability of passive tuned mass damper (PTMD) for reducing the dynamic responses of structures under near-fault earthquake excitations. Three types of pulse-like time functions are employed to simulate the near-fault ground motion. The vibration control effectiveness of PTMDs is extensively investigated through the comparisons of response spectrum and response ti...

In this report the transient rocking response of electrical equipment subjected to trigonometric pulses and near-source ground motions is investigated in detail. First the rocking response of a rigid block subjected to a half-sine pulse motion is reviewed. It is shown that the solution presented by Housner (1963) for the minimum acceleration amplitude of a half-sine pulse that is needed to over...

Warning of imminent ground shaking due to a large earthquake would be useful to a variety of agencies. This kind of ground-motion prediction is possible in southern California for events with magnitude less than 6, where path effects dominate. The 28 June 1991 Sierra Madre earthquake is presented as a test case for this concept. A single-station inversion of the record from the Pasadena station...

Buckling restrained braces (BRBs) have a similar behavior under compression and tension loadings. Therefore, they can be applied as a favorable lateral load resisting system for structures. In the performance-based earthquake engineering (PBEE) framework, an intermediate variable called intensity measure (IM) links the seismic hazard analysis with the structural response analyses. An optimal IM...

Steel braced frame systems (SBFs) having high stiffness and strength are commonly utilized due to their resistance lateral seismic forces in regions with seismicity. In this study, concentrically frames (CBFs) different bracing configurations used obtain the significance of pulse period associated near-fault (NF) ground motion by time-history dynamic analysis. Besides, far-fault (FF) motions al...

Curved high-pier rigid frame bridges (CHRF bridges) are unavoidably affected by near-fault ground motions (NFGMs), and seismic pounding between adjacent components of CHRF bridge has a significant effect on the performance bridges. The response laws under NFGMs need further investigation. In this study, influence with impulse directional effects dynamic was studied. Subsequently, responses were...

Studies on the seismic response of skewed integral abutment bridges have mainly focused under far-field non-pulse-type ground motions, yet large amplitude and long-period velocity pulses in near-fault motions might significant impacts bridge response. In this study, nonlinear dynamic an (SIAB) pulse far-fault non-pulse type are analyzed considering soil–structure interaction, along with paramet...