Expressway technology development

We are developing technology to provide safe and secure Expressway.

Transformation of maintenance management business process

Image of SMH logo

In the series of business process from inspection to repair, we aim to improve the quality of business by utilizing SMH * development technology to double the productivity and Standard the decision making process.

  • SMH (Smart Maintenance Highway)

    ・・・・

    Expressway in order to ensure the long-term "safety and security" of, ICT and to take advantage of the latest technologies such as robotics, Expressway project to dramatically improve the productivity in Asset Management

Image of SMH target business process reform

◎ Joint research [1]: Media Dynamics Laboratory, Graduate School of Information Science, Hokkaido University Under development in collaboration with

◎ Joint research [2]: The University of Tokyo Graduate School of Information Studies External Under development in collaboration with

Use as an operation and maintenance business base for all-around road images

◎ Joint research [3]

You can instantly grasp the local situation (main line / side road / underpass, etc.) and measure the distance in the image.

An image that allows you to instantly grasp the local situation (main line / side road / under the overpass, etc.) and measure the distance within the image.
An image that allows you to instantly grasp the local situation (main line / side road / under the overpass, etc.) and measure the distance within the image.
3D models such as underground buried objects / regulated materials / construction vehicles can be placed on the image. Used for simulation of regulatory work and creation of external consultation materials
Image image that allows placement of 3D models such as underground buried objects / regulated materials / construction vehicles on the video
Bridge names, crossing river information, history of disasters / accidents, etc. are tagged on the video and saved. Utilized as a video information base
Image of bridge name, crossing river information, history of disaster / accident, etc. tagged on the image and saved

◎ Joint research [3]: Trion Co., Ltd. Under development in collaboration with

MR * (Mixed Reality) Technician Training Tool Utilizing Technology

◎ PRETES-e

* 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 about the characteristics of design and construction, representative deformation and deterioration mechanism, etc., and it is possible to have more understanding and effective training

Image of engineer training tool utilizing MR (Mixed Reality) technology
Image of engineer training tool utilizing MR (Mixed Reality) technology

◎ PRETES-e: NEXCO Engineering Hokkaido Co., Ltd. Under development

Automation of spraying of anti-freezing agent using location information

This system is a device that automatically controls spraying by linking GPS position information and antifreeze spraying device. In the system, work contents such as “spray amount”, “spray width”, and “spray start / stop” of the antifreezing agent according to the road structure such as tunnels and bridges are registered in advance, and the operator actually performs the work before starting the work. By simply setting the "working section" that travels to, you can perform spraying work of the antifreezing agent accurately.

Also, even when operating manually, multiple operating devices installed in the driver's seat are integrated into one screen, enabling one-touch operation.

Image of automated anti-freezing agent spraying work
Figure-1 Automation of anti-freezing agent spraying work
Image of operation panel integration / operation panel
Figure-2 Centralization of operation devices and operation panel

Attachment

Automation of anti-freezing agent spraying work utilizing location information (November 1, 2018 regular press conference material) [PDF: 428KB]

Introduction of automatic antifreeze system (ISCOS)

ISCOS grasps the optimal spray amount of the antifreezing agent based on the road surface discrimination data obtained from CAIS®, and automatically controls the spraying section / spraying amount by the automatic antifreezing agent spraying device to meet the road surface condition. This is the world's first technology that has realized automatic spraying.

[Outline of CAIS®]
Based on the characteristic vibration waveform obtained from the acceleration sensor inside the tire according to the road surface condition, the road surface such as freezing and wetness is determined.

Image of the acceleration sensor inside the tire
Image image of the outline of CAIS
  1. ISCOS (Intelligent Salting Control Optimization System) :( stock) NEXCO Engineering Hokkaido & Co., Ltd. Bridgestone patented technology
  2. CAIS (Contact Area Information Sensing): Bridgestone Corporation's patented technology

[Outline of ISCOS]

The CAIS® road surface determination result is sent to the WEB server via the Internet in real time and a database is constructed. By accessing the web based on that data, it is possible to calculate the optimum amount of spray according to the road surface condition every 100 m. The antifreeze sprayer equipped with an automatic spraying device automatically accesses the web and downloads road surface data. The anti-freezing agent spray vehicle automatically performs spraying work just by running.

Image of ISCOS overview

Attachment

About introduction of antifreeze automatic system (ISCOS) (October 26, 2016 regular press conference document) [PDF: 420KB]

Introduction and utilization of Road Zipper® System

NEXCO EAST Group,

  • “Increase in safety” by completely separating the traffic lane and the work area with a concrete guard fence in terms of construction regulations, etc.
  • Improving work efficiency of the entire construction by promptly 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 when the customer is frequently used

For this purpose, we are introducing and utilizing the Road Zipper® System.

Road Zipper® System Overview

The Road Zipper® System is a system that can move the concrete protective fence (Concrete Reactive Tension System) installation position using a dedicated protective fence switching vehicle (hereinafter referred to as “BTM”).

Picture 1 of BTM RTS series

《BTM》 * Specifications of RTS series (pictured left)

  • Weight: Approximately 22 tons when empty, 19 tons when transported (conveyor part removed)
  • Travel speed: 5 to 15 km / h during work, 20 to 30 km / h during forwarding
  • Width of movement of protective fence: 3-5.5 m / time
Photo 2 of the BTM RTS series
Image of BTM structure conceptual diagram
Concrete guard fence photo
Concrete guard fence
Weight: 680kg / piece, extension: 1000mm
Height: 810mm, width 460mm
Steel extension pictures
Steel extensions
Weight: 306kg / piece, Extension: 1000mm
Stretchable steel extents at regular intervals
Picture of protective fence for buffer
Buffer guard fence
Installed at the opening (end) for buffering collision
Change the quantity according to the 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 domestically.

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 impact on traffic due to construction lane regulations
Image image of confirmation and verification of workability and impact on traffic due to construction lane regulations

Utilization of Road Zipper® System

Route / section Construction content Overview
Joban Expressway Kashiwa IC-Nagareyama IC Scrap countermeasure work It was introduced for the first time in Japan as a proof experiment to confirm the workability of the load zipper system and to grasp the traffic impact in terms of the work lane regulations for anti-scraping work.
Gaikan Expressway Oizumi JCT-Wako IC Belt conveyor installation work As a construction facility for transporting excavated soil generated from main line tunnel construction, it is used to regulate the main line of construction where conveyors are installed in existing sections.
Kan-Etsu Expressway Shibukawa Ikaho IC-Maebashi IC Additional lane installation work It is used for the construction regulation of the deceleration lane at the exit of Maebashi IC (In-bound) (installation of additional lane) according to the time zone of the customer's use.
Do-O Expressway Kita-Hiroshima IC ~ Eniwa IC Floor board replacement work It is used for face-to-face traffic regulation that changes the number of lanes depending on the customer's usage time when replacing a deteriorated reinforced concrete floorboard at Shimamatsugawa Bridge between Kitahiroshima IC and Eniwa IC.
Hokuriku Expressway Nakanoshima Mitsuke IC-Nagaoka JCT Floor board replacement work At the Takase Bridge (In-bound line) between Nakanoshima Mitsuke IC and Nagaoka JCT, it was used for the first time in Niigata Prefecture to carry out large-scale bridge renewal work (floor slab replacement work).
Photograph of the regulation situation of scrapping measures between Joban Expressway Kashiwa IC and Nagareyama IC
Joban Expressway Kashiwa IC and Nagareyama IC
Scrap countermeasure construction regulation status
Do-O Expressway Kita-Hiroshima IC ~ Eniwa IC between the floor slab replacement photos of the construction work the number of lanes change regulatory status
Do-O Expressway Kita-Hiroshima IC ~ Eniwa between the IC
Floor slab replacement work Restriction on the number of lanes
Hokuriku Expressway Nakanoshima Mitsuke IC-Nagaoka JCT floor slab replacement construction regulation status (expansion of construction yard)
Hokuriku Expressway Nakanoshima Mitsuke IC and Nagaoka JCT
Floor slab replacement construction regulation status (construction yard expansion)
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