Patent obtained! Repair of the underside of steel deck plates using Thread Rolling Screws (TRS).
The welded joints of the steel deck slab, which directly bear the load of the vehicle, may suffer damage due to fatigue and other factors. Traditionally, repairs for through cracks in the weld bead joining the deck plate and U-rib have involved "re-welding" or "high-strength bolt plates," but these methods have presented challenges such as concerns about cracks and the need for traffic regulation. The developed construction method addresses these issues, allowing for efficient repairs from the underside without impacting traffic. 【Features】 ■ Repair method using TRS with backing plates - Joins backing plates to the deck plate and U-rib using TRS - Enables efficient repairs from the underside without removing the pavement - Effective for preventive maintenance of deck plate cracks - Patent No. 6341897 *For more details, please refer to the PDF document or feel free to contact us.
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Our company manages the maintenance, repairs, and toll collection of expressways, including the automobile-only roads connecting Honshu and Shikoku, as part of our expressway business. Additionally, as related businesses, we operate rest facilities such as service areas (SA/PA) and undertake commissioned projects related to long bridges and roads based on contracts from national and local governments. Please feel free to contact us if you have any requests.