Cases in Japan. のバックアップ(No.1)

Repair Cases in steel bridges in Japan?

Steel bridge on highway I-75, Georgia, USA : Hole-drilling or re-weld, followed by Ultrasonic Impact Treatment (UIT)
Railway Bridge
Shinkansen Br. (end of gusset attached to a flange) : Fillet radius enlargement by machine cut
Shinkansen Br. (fatigue cracks at main girder - floorbeam connection) : Re-weld, Bolted Splicing
Shinkansen Br. (ends of vertical stiffener) : TIG dressing
Shinkansen Br. (fatigue cracks at coped end of girder) : Reinforcement by truss structure
Steel bridge with eyebar-pin connections : Covering the new member

Roadway Bridge
Steel bridge on roadway bridge (at coped end) : Stop-hole and Bolt splice
Steel bridge on roadway bridge (at coped end) (Part 2) : Re-weld and Bolt splice
Jhojuin Br. (connection plates between floor beams and truss chords) : Re-weld, newly attached -onnection plate
Steel bridge on Hanshin Expressway : Replacement and welding
The Fourth Line of The Metropolitan Expressway : Replacement or welding and TIG dressing
Steel bridge of The Tomei Expressway : Addition of the cross bracing
Shindenpo Bridge of Route 43 : Replacement and Bolt connecting
Skewed girder bridge on roadway bridge : top-hole and Bolt splice
The Third line of The Metropolitan Expressway : Stop-hole and Bolt splice
Two hinges arch bridge on roadway bridge : Stop-hole and Bolt splice and Pin connection
Deck-type two hinge arch Br. : Stop-hole and splice ,Improving gusset details
Shemimaru Bridge of Meishin Expressway : Improving gusset detail, Addition of the members
Two hinges arch bridge on roadway bridge (Part 2) : Re-weld and TIG dressing and Bolt splice
Deck-type curved-chord warren truss bridge : Flanges connection
Deck-type Langer bridge on roadway bridge : Knee bracing and flange connection
Minato-Shin bridge of R-23 : Stop-hole and Addition of truss structures
Steel plate floor of The Metropolitan Expressway : Stop-hole and plate connection
Gerber bridge on roadway bridge : Stop-hole and Re-weld and Bolt splice
Gerber bridge on roadway bridge (Part 2) : Re-weld and Bolt splice
Steel bridge on Hanshin Expressway (at bracket end) : Bolt connection
Steel bridge on Hanshin Expressway (at gusset end) : Replacement and Angle connection
Steel bridge on Hanshin Expressway (at branching girder end) : Re-weld and plate connection
Steel bridge on Hanshin Expressway (at web gusset) : Bolt splice
Steel bridge on Hanshin Expressway (at sole plate) : Stop-hole and Scallop and Weld connection and Re-weld (I-section), Bolt connection (Box-section)
Steel bridge on Hanshin Expressway (at corner plate weld) : Removing a part of the cover plate
T-type steel pier on Hanshin Expressway : Plate connection
Steel bridge on Hanshin Expressway (at cantilever bracket) : Replacement of the bracket
Steel bridge on Hanshin Expressway (at floor-beam coped end) : Bolt splice and Re-weld
Komazawa Br. (fatigue cracks at intersection of the lower flange of the stiffening girder and vertical member) : Bolted splicing
Shitoku-Ohashi : Plate connection and Spiraling the trip wire
Steel bridge on Hanshin Expressway (at floor-beam end) : Bolt splice
Deck-type Arch bridge on Tomei Expressway : Stop-hole and Plate connection
Sozuka-Ohhashi (at member connection) : Adding the diagonal member (Stop-hole, Re-weld and Adding the members)
Sozuka-Ohhashi (at suspension member) : Replacement
Mashita Bridge : Plate connection
Through-type Langer bridge on the roadway bridge : Re-weld and Installation of rib and device