ABSTRACT

In order to minimise the cost of dampers, the responses of two adjacent buildings are investigated by considering only three dampers (almost 50 per cent of the total) with optimum damper properties obtained by Xu at selected floor locations. For locations of dampers, the floors with maximum relative displacement are selected. Many trials are carried out to arrive at the optimal placement of dampers. The graphs shown below are the variations of the displacements in all the floors for different cases. It is seen that the maximum displacement values in original duration of 60s taken at a total of 3,000 time records at an interval of 0.02s are selected for the graphs. To illustrate the overall effectiveness of fluid viscous dampers on adjacent buildings, the standard deviations of displacement at each floor for each building with and without dampers are indicated by using selected earthquakes.