Hysteretic dampers have been widely used as effective passive installed at interstories since they are inexpensive compared with other types of dampers. It is well known that added stiffness hysteretic increases floor acceleration responses. However, for pulse-like ground motions sudden input and short duration.

Seismic ductility reduction factors for flexural-type structures with vertical irregularities subjected to pulse-like and nonpulse-like ground motions are investigated in this paper. By establishing various multi-node flexural cantilever-column models, the ductility reduction factor of vertically irregular structures is studied by modifying the ductility reduction factor of irregular structures...

The displacement fling-step pulse seldom signatures near-field earthquake in its ground motions. It is well recognized that the motion with velocity amplifies building drift larger than regular motion. Recent findings explain experiences minor damage to collapse not caused only by single earthquakes, which many cases are due repeated seismic performance of moment frames under studied, particula...

Many branches of engineering, mathematics, and sciences, have relied on benchmark problems as a standard means to compare different solution techniques. Since 1996, the ASCE Structural Control and Monitoring Committee and Task Group on Benchmark Problems, the U.S. Panel on structural control, and IASCM have developed a series of benchmark control problems that offer a set of carefully modeled r...

The western region of China is rich in hydropower resources and characterized by unique geological conditions. For the construction or planned high dams this region, different types cover layers are formed due to special structures, most which located seismic intensity zones. This study focuses on four site conditions: hard ground, medium–hard medium–soft weak ground. By simulating dynamic resp...

A base-isolated building may sometimes exhibit an undesirable large response to a long-duration, long-period earthquake ground motion and a connected building system without base-isolation may show a large response to a near-fault (rather high-frequency) earthquake ground motion. To overcome both deficiencies, a new hybrid control system of base-isolation and building-connection is proposed and...

Displacement-based methods are recognized as appropriate approaches to reach the goals of performance-based seismic design method. In the direct displacement-based seismic design method, the seismic yield displacement is applied as one of the important design parameters. In this paper, a new relation is suggested to determine the lateral displacement pattern at first yielding of eccentrically b...

Performance based design (PBD) is an iterative exercise in which a preliminary trial design of the building structure is selected and if the selected trial design of the building structure does not conform to the desired performance objective, the trial design is revised. In this context, development of a fundamental approach for performance based seismic design of masonry infilled frames with ...