Optical-Fiber Filling Detection and Centralized PC Grout Management System
First written in FY2018. 6 of 8 entries say "Advanced", first in FY2019. Latest entry: FY2026.
No other company in this theme has enough history to compare yet.
- FY2026AdvancedAnnual report
「The technology had been used in a cumulative total of 55 construction projects as of the end of fiscal 2025.」
The cumulative number of construction projects using FFU segments increased from 50 as of the end of the previous fiscal year to 55. The company also continues to enhance the segment structure for greater efficiency and deep underground applications. - FY2025AdvancedAnnual report
「The technology had been used in a cumulative total of 50 construction projects as of the end of fiscal 2024.」
The cumulative number of construction projects using FFU segments increased from 48 as of the end of the previous fiscal year to 50. - FY2024AdvancedAnnual report
「FFU segments, shield-tunneling segments made from the new FFU material, had a cumulative track record of 16 projects as of the end of fiscal 2023. They had been used in a cumulative total of 48 construction projects as of the end of fiscal 2023.」
The company disclosed a cumulative track record of 16 FFU-segment projects and use in a cumulative total of 48 construction projects, providing specific details on its adoption record. - FY2023AdvancedAnnual report
「The PC Bridge Construction Management System was completed together with the Integrated PC Grout Management System developed in 2018. It was introduced at a PC bridge construction project in Nagano Prefecture, where its effectiveness was demonstrated.」
A construction management system integrating an automated bridge-deck surveying system, a PC tensioning management system and an integrated PC grout management system was completed, and its effectiveness was demonstrated at a construction project in Nagano Prefecture. - FY2022The number of projects using FFU-related technology decreased.Annual report
「In fiscal 2021, the technology was used in 5 Urban Ring shaft construction projects for shield tunneling.」
The number of projects using FFU-segment technology decreased from 10 in the previous fiscal year to 5. - FY2020AdvancedAnnual report
「In fiscal 2019, in addition to applying the technology to PC grout fill management for a bridge construction project in Iwate Prefecture, the company enhanced the system by extending the fiber-optic detection range so that it could also handle mortar filling in shield tunneling, and applied it to a shield-tunneling project in Aichi Prefecture.」
In addition to PC grout fill management, the company carried out enhancement development to extend the detection range and applied the technology to mortar filling in shield tunneling. - FY2019AdvancedAnnual report
「In fiscal 2018, PC grout fill management and concrete fill management technologies were applied to 2 bridge construction projects on the Kyushu Shinkansen and to a bridge construction project in Iwate Prefecture, where construction was in progress.」
The company disclosed that its fill-detection and integrated PC grout management technologies had been applied to multiple bridge construction projects and were being used during construction. - FY2018First statedAnnual report
「In fiscal 2017, the system had been applied to 4 prestressed-concrete bridge construction projects as a PC grout fill-detection sensor and to 2 tunnel construction projects as a concrete fill-detection sensor, where construction was in progress.」
Fiber-optic fill-detection sensors were applied to 4 bridge projects and 2 tunnel projects. The company is also developing an integrated PC grout management system covering flow rate, pressure and temperature.