Corresponds to the bridge axis direction, vertical direction, and perpendicular to the bridge axis direction. Due to the separation structure of each component, handling is easy even during repairs.
Are you struggling with serious issues at the vertical joints of bridges? - Joints cannot keep up with the complex three-dimensional behavior in the bridge axis and vertical direction, leading to breakage. - During repair work, noise and dust from concrete chipping, as well as long traffic congestion, occur. - Vehicles tend to slip at the vertical joint area during rainy weather, leading to constant complaints from nearby residents and road users. The "DIA-Free Joint" fundamentally solves these issues. ◇ Dedicated design for vertical joints that follows three-dimensional movement Flexibly follows complex displacements in the bridge axis, vertical direction, and perpendicular to the bridge axis. It also responds flexibly at intersections, contributing to the longevity of the structure. ◇ Separation structure that eliminates the need for concrete chipping Adopts a nut-type anchor bolt and a separation structure. Eliminates chipping work during repairs, significantly reducing noise and congestion during construction with short-time replacements at the component level. ◇ Pin structure that maintains high wear resistance even in rainy weather The diamond-shaped holes in the surface rubber and pin structure maintain tire friction resistance on wet surfaces, keeping the driving surface flat and reducing noise and slipping. *For more details, please contact us or refer to the catalog.
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basic information
【Features】 ○ Protects the floor slab → The receiving plate has a rubber coating on the steel plate ○ Comfortable driving → The surface rubber absorbs expansion and contraction through the elastic deformation of diamond-shaped holes ○ Safe driving → Steel plates that cause slipping do not appear on the surface ○ Environmentally friendly → Uses high nut-type anchor bolts ○ Cost-saving → Repairs can be done in a short time ○ Versatile → Compatible with both pre-installation and post-installation methods 【Product Lineup】 ○ K-40, K-50, K-80, K-110 → Both product and construction have flexible performance ○ K-210, K-240, K-330 → Ideal for repairs of finger joints ○ K-530 → Further accommodates wider spaces ● For more details, please contact us or refer to the catalog.
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Applications/Examples of results
■Expected Applicable Processes and Site Issues Repair processes with strict restrictions on noise, vibration, and dust during nighttime work, located near residential areas and urban centers. Roads with high traffic volume where there is a desire to minimize regulation times to alleviate congestion caused by street construction. Sections with a high risk of slip accidents during rainy weather, where there is a need to improve the flatness of vertical joints and driving safety. Intersections and vertical joints of large-span bridges and elevated bridges that require measures against significant movements and displacements in the vertical and bridge axis directions.
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Company information
The bridge expansion joint device, Dia-Free Joint, developed independently by Nihon Bridge Engineering Co., Ltd., is an ideal joint that excels in safety, durability, sound insulation, ease of construction and maintenance, and cost-effectiveness, built on over 40 years of experience and trust. We are a company that utilizes ideas and thrives on technology.