Traditionally, the effect of vibration on human comfort has been evaluated using the rms value of acceleration. More recently, a widely used criteria in North America has utilized the peak value of acceleration. The differences between these two methods are examined, and the importance of making a rational selection of the appropriate motion index for future standards is emphasized. It is propo...

ABSTRACT: We apply CFD to visualize wind flow around a row of three square-plan tall buildings closely arranged in a row. Increase in wind load on the upwind building is observed when wind blows to the row at 30. CFD results show that the interference mechanism is mainly due by strong channeling of wind flow through the building gaps. This leads to highly negative pressures on building walls fa...

In order to adapt past experiences to new situations, case-based reasoning algorithms generally rely on domain knowledge and heuristics. Unfortunately, the amount of domain-specific knowledge and domainand task-specific heuristics needed for such case adaptation is usually quite large. In contrast, in our current work we are exploring the use of a knowledge-lean method based on genetic algorith...

An updated state-of-the-art review on response-triggered structural control system is presented. The review mainly focuses on the active control of structures for earthquake excitations, and covers theoretical backgrounds of different active control schemes, important parametric observations on active structural control, limitations and difficulties of their practical implementation, and brief ...

In this paper, a two-stage method for damage detection and estimation in tall shear frames is presented. This method is based on the first mode shape of a shear frame. We demonstrate that the first mode shape slope is very sensitive to the story stiffness. Thus, at the first stage, by using the grey system theory on the first mode shape slope, damage locations are identified in shear frames. Da...