Repair method "KM Lift Method"

Ensure the progression of cracks occurring in the vertical stiffeners of steel deck bridges is reliably stopped and prevent the occurrence of new cracks.

The "KM Lift Method" is a new repair technique for damage occurring at the vertical stiffeners and deck plate welds of steel deck plate box girder bridges. This method employs a different approach from conventional techniques, closely bonding the deck plate with specially designed reinforcement members to achieve a high repair effect. Additionally, the optimally placed stiffening members allow for constant visibility of the damaged weld areas. 【Features】 ■ Increases flange rigidity without disrupting traffic ■ Only two bolt holes are required for processing existing structures ■ Reinforcement members are lifted up due to the pin effect ■ Monitoring holes allow for checking the condition of crack propagation areas ■ High reinforcement effect leads to stress reduction (90% reduction in maximum stress range and 80% reduction in equivalent stress range) *For more details, please refer to the PDF document or feel free to contact us.

Renovation and repair methods