Abstract
The feasibility of applying the active control system to two-cable-stayed bridge is demonstrated. The stochastic dynamic analysis of a two-cable-stayed bridge implemented by the active feedback control system has been carried out. The control devices are connected to the existing four suspension cables so that these suspension cables also serve as active tendons. The bridge is subjected to buffeting loads, self-excited loads, and control forces. The stochastic response of the bridge with or without active control has been obtained and the average power input to the active control system has been derived. It is shown that under strong wind gusts the mean square response of the bridge can be reduced significantly while the average power supply needed for the control system is small.
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