R & D Research and Development

The research institute has three experimental buildings equipped with various testing equipment such as reaction walls, reaction floors, fatigue testing machines, universal testing machines, and wheel load testing machines.

We have 6 fatigue testing machines that can apply repeated loads to test specimens (3 jack type, 1 fixed type, and 2 vibration type).

This is a testing machine that can apply wheel loads that simulate automobile loads to floor slabs. A wheel load of 196kN can be applied at 17 reciprocations/min.

This floor slab is made by precasting the concrete part of the power slab (synthetic deck slab), which has a proven track record as a composite deck slab for road bridges, to further save on-site labor and improve quality.

This technology aims to create a main structure with long-term durability by applying stainless steel, which has excellent corrosion resistance, to the corrosion-prone areas of steel bridges.

FRP sandwich deck slabs are lightweight and highly durable pedestrian bridge decks made by placing GFRP on the surface of balsa wood, which is a lightweight and high-strength wood.

A moisture sensor detects the dry state of the curing mat during wet curing of concrete, and when the moisture content of the mat decreases, it automatically sprinkles water to maintain the moist state, and further monitors the management status (dry state of the mat and watering results). This is a recording system.

We developed the precast concrete wall railing ``Rapid Guard Fence'' with the aim of shortening the construction period and improving the quality of bridge components in road bridge renewal and new construction work.

We have jointly developed the Submarine Slicer, a dry horizontal cutting method for the corbels of deck slabs, with the aim of shortening the traffic restriction period and improving safety during road bridge deck replacement work.

This technology sprays a powder mixture of alumina and zinc at supersonic speed on corroded high-strength bolted joints to remove rust and form a zinc film to prevent corrosion.Reference article

Using a 360° prism that combines an automatic tracking total station and an operation tablet, we have achieved one-man on-site work progress management. Measurement results can be instantly compared on the tablet screen and automatically output to a report.

This is a management system that uses AR technology to enable workers to grasp the position and time of inserting the vibrator during compaction work when pouring concrete, and can also display and record this information in real time on a tablet device held by the construction manager.

Labor-saving construction planning!By specifying the crane to be used and the blocks to be constructed, the optimal placement of the crane and ground blocks is automatically determined.

As one of our developments utilizing open innovation, we developed a system that measures the placement and inclination of drive-in anchor bolts used to secure substructure inspection road brackets, etc.

This technology aims to improve welding quality by measuring the voltage, current, and welding speed during welding and grasping the amount of heat input, which is an important index for welding management, in real time.

When checking the tightness of high-strength bolts, this system uses AI to determine whether the markings are correct, whether the bolts have been tightened, or whether they are running in tandem, and automatically outputs a form, aiming to save labor on site management.

This is a safety management system that uses a flashing LED light and an alarm buzzer to notify those around you of the status of safety harnesses being used when working at height.

On-site workers can mutually confirm and warn each other about the proper use of safety belts, and on-site managers in remote locations can also check the status of safety belt use, preventing unsafe behavior on-site.

This is a risk assessment tool for preventing workplace accidents and injuries that links a database of past workplace accidents and injuries with the functionality of eYACHO (MetaMoJi Co., Ltd.). Not only Yokogawa Bridge employees but also foremen of partner companies can check past accident cases and safety notices on their terminals and use them for risk assessment.