日本橋梁工業 List of Products and Services

DIA Free Joint (Rubber Type) is a joint that is installed perpendicular or at an angle to the bridge axis (direction of vehicle travel). It is a rubber load-supporting type with a separate structure consisting of surface rubber, a receiving plate (load-supporting plate), a receiving base, and anchor bolts. Since there is no exposure of metal (load-supporting plate) due to wear of the surface rubber, rust is less likely to occur, and there is minimal adverse effect on the joint. Additionally, by using high nut-type anchor bolts, component replacement can be done without breaking the cast concrete. The products K-40, K-50, K-80, and K-110 have flexible performance for both products and construction. K-210, K-240, and K-330 are ideal for repairing finger joints. We also offer K-530, which can accommodate wider gaps. For more details, please contact us or refer to the catalog.

The "DIA Free Joint Side Joint K-210" is a bridge expansion joint device installed at right angles or diagonally to the bridge axis (the direction of vehicle travel). In recent years, bridges with wide spans have been designed considering displacements during earthquakes, and this device is suitable for accommodating those wide spans and for repairs of finger joints. Additionally, the surface rubber has sufficient thickness, and the load-bearing plates are coated with rubber on steel plates, which helps to mitigate impact loads and reduces the effects on the deck slab. 【Features】 ■ Protects the deck slab ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost reduction ■ Compatible with both pre-installed and retrofitted methods *For more details, please download the PDF or feel free to contact us.

"K-40" is a diamond-free joint developed by our company based on numerous experiences for horizontal joints. It features a separation structure consisting of a receiving base installed on the floor slab, a receiving plate placed on top of the receiving base, and a surface rubber with numerous diamond-shaped holes. Despite being separate components, they function as a cohesive unit, demonstrating excellent performance. Both the product and installation possess flexible performance, making it widely used in many highways, bridges, and elevated bridges. [Features] ■ Protects the floor slab ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

The "K-50" is a diamond-free joint developed by our company based on extensive experience for lateral joints. Since the surface rubber, receiving plate, and receiving base have a separated structure, the steel plate that causes slipping does not come to the surface due to wear of the surface rubber, allowing for safe travel. Additionally, the surface rubber has sufficient thickness, and the receiving plate that supports the load is coated with rubber on the steel plate, which helps to mitigate impact loads and reduces the effect on the floor slab. 【Features】 ■ Protects the floor slab ■ Comfortable travel ■ Safe travel ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

The "K-80" is a diamond-free joint developed by our company based on extensive experience for horizontal joints. By adopting a high-nut type anchor bolt, it eliminates the need to chip concrete during repairs, resulting in no noise or debris waste, and it can also shorten construction time. Additionally, the reduction in time helps minimize exhaust emissions caused by traffic congestion, thus preserving the living and working environment in urban areas and the natural environment in suburban areas. 【Features】 ■ Protects the floor slab ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

The "K-110" is a diamond-free joint developed by our company based on various experiences for horizontal joints. It features a separation structure consisting of a receiving base installed on the floor slab, a receiving plate placed on top of the receiving base, and a surface rubber with numerous diamond-shaped holes. Although these are separate components, they function together as a cohesive unit, demonstrating excellent performance. The surface rubber absorbs expansion and contraction through the elastic deformation of the diamond-shaped holes, keeping the surface of the joint consistently flat, which reduces noise during travel and ensures a comfortable ride. 【Features】 ■ Protects the floor slab ■ Comfortable travel ■ Safe travel ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

The "K-210" is a diamond-free joint suitable for horizontal joints, designed to accommodate bridge structures with wide spans that consider displacements during earthquakes, and is ideal for repairs of finger joints. Since the surface rubber, receiving plate, and support structure are separated, wear of the surface rubber does not expose the steel plate that can cause slipping, allowing for safe travel. Additionally, the surface rubber has sufficient thickness, and the receiving plate that supports the load is coated with rubber on the steel plate, which helps to mitigate impact loads and reduces the effects on the deck slab. 【Features】 ■ Protects the deck slab ■ Comfortable travel ■ Safe travel ■ Environmentally friendly ■ Cost-effective *For more details, please download the PDF or feel free to contact us.

The "K-240" is a diamond-free joint for transverse joints that is installed perpendicular or diagonally to the bridge axis (the direction of vehicle travel). By adopting high-nut anchor bolts, there is no need to chip away concrete during repairs, which prevents noise and debris waste, and also shortens construction time. Additionally, the reduction in time helps to minimize exhaust emissions caused by traffic congestion, thus preserving the living environment in urban areas and the natural environment in suburban areas. 【Features】 ■ Protects the deck ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

The "K-330" is a diamond-free joint designed for transverse joints, installed perpendicular or diagonally to the bridge axis (the direction of vehicle travel). It is suitable for bridges with wide spans that consider displacements during earthquakes and is ideal for repairs of finger joints. Additionally, the surface rubber absorbs expansion and contraction through the elastic deformation of diamond-shaped holes, keeping the surface of the joint always flat, resulting in reduced noise during travel and a comfortable driving experience. 【Features】 ■ Protects the deck ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

We would like to introduce our diamond-free joint for lateral joints, "K-530," which we handle. This product was developed in response to requests for a product that can accommodate even wider gaps, and it has been successfully supplied to the Kawazu Shimoda Road (Shizuoka) and the Nagase Viaduct (Tottori). It can be used with various types of bridges, including RC bridges, PC bridges, and steel bridges, and is compatible with both pre-installed and post-installed methods. Please feel free to consult us even if you are considering products other than our genuine items. 【Features】 ■ Protects the deck ■ Comfortable driving ■ Safe driving ■ Environmentally friendly ■ Cost-saving *For more details, please download the PDF or feel free to contact us.

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.