Transform maintenance management process
In a series of business processes from inspection to repair, SMH※Utilize development technologies to double productivity and improve operational quality by Standard decision-making processes
... Expressway to long-term of ensuring the "safety and security", ICT and to take advantage of the latest technologies such as robotics, Expressway project to dramatically improve the productivity in Asset Management
◎ Joint research :Hokkaido University Graduate School of Information Science and Technology Media Dynamics LaboratoryUnder development with joint research
◎ Joint research :The University of Tokyo Graduate School of InformaticsUnder development with joint research
Utilization of all surrounding road image as maintenance management base
◎ Joint research 
You can instantly grasp the local conditions (main line / side road / underpass etc.) and measure the distance in the video.
3D models such as underground buried objects / regulated materials / construction vehicles can be placed on the video. Used for simulation of regulatory work and preparation of external consultation materials
Tagged bridge history, crossing river information, disaster / accident history, etc. on video and save. Utilize as an information base with video
◎ Joint research :Trion Co., Ltd.Under development with joint research
MR※(Mixed reality) Technician development tool using technology
* MR (Mixed Reality): Technology that fuses real and virtual spaces
By visualizing the internal structure of the bridge with MR technology, it is possible to educate on design and construction features, typical deformation and deterioration mechanisms, etc., and to have better understanding and effective training
◎ PRETES-e:NEXCO Engineering Hokkaido Co., Ltd.Under development
Automated spraying of antifreeze using location information
This system is a device that automatically controls spraying by linking the GPS position information with the spraying device for antifreeze. In the system, the work contents of "spray amount", "spread width", and "spray start / stop" of the deicing agent according to the road structure such as tunnels and bridges are registered in advance, and the operator will actually By simply setting the "work section" to run, you can perform the work of spraying the deicing agent accurately.
In addition, even when operating manually, multiple operating devices installed in the driver's seat are integrated into one screen, enabling one-touch operation.
Fig. 1 Automated spraying of antifreeze
Fig. 2 Centralization of operation devices and operation panel.
Introduction of automatic deicing agent system (ISCOS)
ISCOS uses the road surface identification data obtained from CAIS® to determine the optimal amount of the antifreeze to be sprayed, and automatically controls the spraying area and amount by the antifreeze automatic spraying device, and adapts to the road surface conditions. This is the world's first technology to achieve automatic spraying.
- [Overview of CAIS®]
Based on the characteristic vibration waveform according to the road surface condition obtained from the acceleration sensor inside the tire, the road surface such as freezing / wetting is determined.
- 1 ISCOS (Intelligent Salting Control Optimization System ) :( stock)NEXCO Engineering Hokkaido & Co., Ltd. Bridgestone patented technology
- 2 CAIS (Contact Area Information Sensing): Bridgestone Corporation patented technology
[Overview of ISCOS]
The results of the road surface discrimination of CAIS® are transmitted in real time to a web server via the Internet, and a database is constructed. By accessing the web based on the data, it is possible to calculate the optimal amount of spraying according to the road surface condition every 100m. The antifreeze sprayer equipped with an automatic sprayer automatically accesses the web and downloads road surface data. The deicing sprayer automatically sprays just by running.
Introduction and utilization of Road Zipper® System
NEXCO EAST Group,
- "Improvement of safety" by completely separating traffic lane and work area by concrete protection fence in construction regulations
- "Improvement of work efficiency" of the entire construction by quickly implementing regulations such as switching lane regulations
- `` Restriction on construction regulation congestion '' by changing the construction regulation range and the number of traffic lanes according to the time of day when customers frequently use
We have introduced and utilize Road Zipper®System for the purpose.
Outline of Road Zipper®System
The Road Zipper® System is a system that allows the position of the concrete protective fence (Concrete Reactive Tension System) to be moved by a dedicated protective fence switching vehicle (BTM).
《BTM》* Specifications of the RTS series (left photo)
- Weight: Approximately 22t when empty, 19t during transportation (Conveyor section removed)
- Travel speed: 5-15km / h during work, 20-30km / h during transport
- Movement width of protective fence: 3 to 5.5m / time
Concrete protective fence
Weight: about 680kg / piece, extension: 1000mm
Height: 810mm, width 460mm
Weight: about 306kg / piece, extension: 1000mm
Constant stretchable steel extension
Place at intervals
Protective fence for buffer
Installed at the opening (end) for buffering collision
Change quantity according to regulation speed (collision speed)
Introduction of Road Zipper® System
Road Zipper®System is, the United States Lindsay Transportation Sales & Service LLC of (the United States) (hereinafter referred to as "LINDSAY Company") and is sold development, manufacturing, and, currently, in Japan (Ltd.)NEXCO East Innovation & Communications (NI & C) Sells and leases in Japan.
It should be noted that, when the Japan introduction of the Road Zipper®System, NEXCO in the East, has been carried out to confirm verification of the impact of the vehicle according to the present system, we have confirmed the usefulness in comparison with the regulation method according to the conventional Rabakon .
Confirmation and verification of workability and traffic impact in construction lane regulations
Use of Road Zipper® System
|Route / section||Construction details||Overview|
|Joban Expressway Kashiwa IC-Nagareyama IC||Peeling work||Introduced for the first time in Japan as a demonstration experiment to confirm the workability of the road zipper system and to understand the impact of traffic in the construction lane regulations for anti-fall work.|
|Gaikan Expressway Oizumi JCT-Wako IC||Belt conveyor installation work||Used as a facility for transporting excavated soil generated from main line tunnel construction, and used for main line regulation in the installation of conveyors in existing sections.|
|Kan-Etsu Expressway Shibukawa Ikaho IC-Maebashi IC||Additional lane installation work||In the extension of the deceleration lane at the Maebashi IC (In-bound line) exit (additional lane installation), it is used to regulate the construction according to the time zone of the customer's use.|
|Do-O Expressway Kita-Hiroshima IC ~Eniwa IC||Floor board replacement work||When replacing aging concrete slabs at the Shimamatsu River Bridge between Kitahiroshima IC and Eniwa IC, this system is used for face-to-face traffic regulation that changes the number of lanes according to the time of use by customers.|
|Hokuriku Expressway Nakanoshima Mitsuke IC-Nagaoka JCT||Floor board replacement work||The Takase Bridge (In-bound line) between Nakanoshima Mitsuke IC and Nagaoka JCT is used for lane regulation in the first large-scale bridge renewal construction (floor slab replacement) in Niigata Prefecture.|
Joban Expressway Kashiwa IC-Nagareyama IC
Breakdown countermeasure construction regulations
Do-O Expressway Kita-Hiroshima IC ~Eniwa between the IC
Floor slab replacement work
Hokuriku Expressway Nakanoshima Mitsuke IC-Nagaoka JCT
Floor slab replacement construction regulations (construction yard expansion)