| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrolytic protection method which reduces energy loss and facilitates facility management, and to provide an electrolytic protection apparatus therefor. <P>SOLUTION: A beam bridge 10 which is one of concrete structures has a bridge footing 11, a bridge girder (main girder) 13, a support 14 installed in the bridge footing 11 so as to support the bridge girder 13, a floor board 15 installed on the bridge girder 13, and an expandable device 17 for connecting the floor boards 15 with each other. The support 14 has a piezoelectric element 21 embedded therein, and a reinforcing bar 18 and a titanium mesh 19 each embedded in the bridge girder 13. The electrolytic protection method for preventing the corrosion of the reinforcing bar 18 comprises: generating voltage in the piezoelectric element 21 by using distortion, flection and vibration in the bridge girder 13 and the floor board 15 occurring due to external force acting on the beam bridge 10; converting the voltage to direct voltage through a rectification circuit 22; and then applying the direct voltage to the reinforcing bar 18 and the titanium mesh 19 to pass a protection current in concrete. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
