FRPスマートカバーの性能評価 ... - miyaji-eng.co.jp

1 911 4 FRP FRP 1 FRP FRP FRP 1 2 3 4 Evaluation of FRP Plate elements for closing bridge cross-section 1 2 3 4 Shuhei YAMASHITA Yasuhiro ARIZUMI Tetsuhiro SHIMOZATO Tetsuya YABUKI Summary One of the damage factors for the steel girder bridges is

2 The corrosion of steel material. Particularly, the inner girders in the bridge cross-section are corroded more than the outside girders. One of the reasons is that the inside of the section is not washed by the rain water when the aerosol chlorides, being the most sever corrosive factor, are attached to the surfaces of the girders By taking due consideration on this behavior, a construction measure called FRP SMART COVER to protect the girders system against the corrosion damage by closing the bridge cross section between the girders with FRP plates is proposed. At first, this paper presents the environment monitoring data which have been conducted with the steel girder bridge applied the FRP cover plates.

3 From the monitoring data, the corrosive improvement effect in the cross section between the girders covered by the FRP plates is examined. Next, this paper shows the results of the loading and fatigue tests to confirm that the FRP plates have the sufficient performance requirements as the inspection passage. FRP 4) FRP FRP FRP FRP FRP FRP

4 -1 FRP FRP (1)FRP FRP FRP *1 ( ) *3 *2 *4 1 FRP FRP Evaluation of FRP Plate elements for closing bridge cross-section FRP FRP FRP FRP FRP FRP Shuhei YAMASHITA 1 Yasuhiro ARIZUMI 2 Tetsuhiro SHIMOZATO 3

5 Tetsuya YABUKI 492 2 FRP 1 FRP FRP FRP GFRP Glass Fiber Reinforced Plastic GFRP 1 GFRP 1/3 2 FRP FRP FRP 30cm FRP 3 2 FRP FRP FRP 3 1 1 FRP 700m 2 C-5 D-5 22 10 FRP 2 GFRP(Glass Fiber Reinforced Plastic)

6 GFRP -1 GFRP 1/3 -1 MPa 400 510150 470250 550 GPa 200 2307515 30 10-5/ W/(m K) (2)FRP FRP FRP 30cm 1 2 FRP -3 2 FRP FRP FRP 6660050150 300 15040665100106T -2 FRP -1 FRP -3 (1) 1)

7 FRP 700m 2 C-5 D-5 22 10 FRP 2) (JIS Z 2382) -30 C 80 C 0 100 1 C JIS Z 2382 50 2 50 JIS G 3114 FRP 0m 10m 30m FRP -4 2011 4 2012 9 1 FRP STUD M16 ( ) T FRP Fill-PLFRP PLSTUD M16 ( )

8 FRP T GFRP(Glass Fiber Reinforced Plastic) GFRP -1 GFRP 1/3 -1 MPa 400 510150 470250 550 GPa 200 2307515 30 10-5/ W/(m K) (2)FRP FRP FRP 30cm 1 2 FRP -3 2 FRP FRP FRP 666005015030015040665100106T -2 FRP -1 FRP -3 (1) 1)

9 FRP 700m 2 C-5 D-5 22 10 FRP 2) (JIS Z 2382) -30 C 80 C 0 100 1 C JIS Z 2382 50 2 50 JIS G 3114 FRP 0m 10m 30m FRP -4 2011 4 2012 9 1 FRP STUD M16 ( ) T FRP Fill-PLFRP PLSTUD M16 ( )

10 FRP T GFRP(Glass Fiber Reinforced Plastic) GFRP -1 GFRP 1/3 -1 MPa 400 510150 470250 550 GPa 200 2307515 30 10-5/ W/(m K) (2)FRP FRP FRP 30cm 1 2 FRP -3 2 FRP FRP FRP 6660050150 300 15040665100106T -2 FRP -1 FRP -3 (1) 1)