Repair of fatigue loaded welded structures
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1.XIII WG-06-95
*M bridge in Japan
Defects in the butt welds of bottom flange.
Bolted splice.
*Cut-out-web details of Highway and Railway bridges.
Stress component in the normal direction of the corner.
Bolted splice.
*Sole-plate detail of highway bridges.
Secondary stresses due to the loss of rotational and sliding function of bearing.
Bolted splice.
*Through-type arch bridges.
Vibration due to wind.
Bolted splice, change of connection detail.
2.XIII WG5-12-97
Defects in the butt welds of horizontal stiffener.
Bolted splice, stop holes.
Cover plate ends, stress concentration.
Bolted splice, Cover plate end, TIG, Peening.
Vibration while the girders carried by train.
Stop holes.
Defects in the short groove weld in the web.
Bolted splice.
Fix-end moment at the connection of truss chord and floor beam.
Attaching new connection plate.
Fix-end moment at the connection of arch rib and column.
Bolted splicing.
Vibration due to the passage of rapid train.
Rewelding + TIG
3.XIII WG5-15-97:Power plant
4.XIII WG5-18-98:Highway bridge
Displacement induced cracking.
Rewelding + UIP.
5.XIII WG5-19-98:LNG Carriers
6.XIII WG5-20-98:Marine Propeller
* Deck-type two hinge arch bridge and two simply supported girders.
Stop holes, bolted splice and installing bracket, improving details.