مقاوم سازي پل ها با استفاده از سيستم كنترل فعال غيرمستقيم

In the view of earthyuake in Iran and economical ,or human Damages of them,it is important to pay attention about it.Some times preventing these damages aren’t possible entirely.So decreasing these damages is one of the solution . In this paper ,indirect Active control system for alarming in the Bridge will discuss . this system can be used in the old and under construction bridges. In this system sensors install around the Bridge and the avtive faults near it. Longitudinal wave arrive to the suface of Ground sooner them shear wave . then sensors alarm in the Bridge and signs emerge as the flasher or voise . then interunce of Bridge forbidden and Exit line is open, to decrease Traffic on the Bridge . So this action decrease live load. It couse ,Bridge behave better in the earthquake. So damages will decrease.