Reducing Costs, Improving Safety and Shortening Construction Periods Through Proprietary Technologies
First written in FY2016. 19 of 28 entries say "Restated". Latest entry: FY2026.
12 other companies' latest entry also says "Advanced".
- FY2026AdvancedAnnual report
「Pneumatic caisson automated excavation technology is intended to automate the series of operations involved in excavation inside a pneumatic caisson and the removal of excavated soil to the surface by developing and introducing further automation technologies based on Technologies 1 through 3 described above. Step 1 has already reached the development stage required for practical field use. In addition to tests at the experimental yard of the company's technical research institute, demonstration tests at pneumatic caisson construction sites were conducted in parallel from 2024 to 2025, culminating in the public release of the field demonstration test in May 2025.」
Regarding initiatives to automate and remotely operate proprietary technology, the company states that Step 1 of automated excavation for pneumatic caissons has reached the level required for practical field use and that the field demonstration test has progressed to the point of being publicly disclosed. Research and development expenses were ¥459 million. - 2026-05-13AdvancedEarnings
「To improve productivity and efficiency, we will accelerate the implementation of autonomous construction technologies in our areas of expertise and the adoption of DX and ICT technologies, including the digitalization and remote operation of construction management.」
The Company states that it will accelerate the implementation of autonomous construction technologies and the digitalization and remote operation of construction management to advance its proprietary technologies and construction management capabilities. - FY2026-H1RestatedAnnual report
「Research and development expenses for the current interim consolidated accounting period were ¥188 million. There were also no significant changes in the status of research and development activities during the current interim consolidated accounting period.」
The company states that there were no significant changes in research and development activities and reports research and development expenses of ¥188 million for the current interim consolidated accounting period. - FY2024AdvancedAnnual report
「The company developed the New DREAM method, which combines the Taiho-style pneumatic caisson method with multifunctional caisson excavation equipment, an excavator maintenance system, an atmospheric-pressure elevator, the DHENOX system (a helium-mixed gas system), and remote bearing-capacity testing equipment, enabling fully unmanned execution of all major high-pressure operations. The method has been applied to 10 pneumatic caisson construction projects, contributing to the construction of deep, large-section underground structures, including bridge foundations, shafts for road and railway tunnels, and stormwater storage facilities.」
Regarding the deployment of proprietary technology, the New DREAM method has been applied to 10 projects. In addition, Step 1 of the two-stage development of automated excavation technology has reached the level required for practical field use, and the excavation management system of the integrated shield management system has already been deployed in the field. The depressurization management program has been adopted for 52 projects. - FY2024-Q2RestatedAnnual report
「Research and development expenses for the current second-quarter consolidated cumulative period were ¥109 million. There were also no significant changes in the status of research and development activities during the current second-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥109 million and states that there were no significant changes in the status of research and development activities. - FY2024-Q1RestatedAnnual report
「Research and development expenses for the current first-quarter consolidated cumulative period were ¥37 million. There were also no significant changes in the status of research and development activities during the current first-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥37 million and states that there were no significant changes in the status of research and development activities. - FY2022-Q3RestatedAnnual report
「Research and development expenses for the current third-quarter consolidated cumulative period were ¥119 million. There were also no significant changes in the status of research and development activities during the current third-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥119 million and states that there were no significant changes in the status of research and development activities. - FY2022-Q2RestatedAnnual report
「Research and development expenses for the current second-quarter consolidated cumulative period were ¥69 million. There were also no significant changes in the status of research and development activities during the current second-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥69 million and states that there were no significant changes in the status of research and development activities. - FY2021AdvancedAnnual report
「The method has been adopted for 48 pneumatic caisson construction projects since operations began in fiscal 2015, making a substantial contribution during this period to preventing decompression sickness among workers engaged in high-pressure operations.」
The application track record for the depressurization management program increased from the previously reported 45 projects to 48. Research and development expenses were ¥93 million, and initiatives in unmanned operation, remote operation, precast construction, measurement and management technologies, and CIM also continued. - FY2021-Q3RestatedAnnual report
「Research and development expenses for the current third-quarter consolidated cumulative period were ¥70 million. There were also no significant changes in the status of research and development activities during the current third-quarter consolidated cumulative period.」
The company states that there were no significant changes in research and development activities and reports research and development expenses of ¥70 million for the current third-quarter consolidated cumulative period. - FY2021-Q2RestatedAnnual report
「Research and development expenses for the current second-quarter consolidated cumulative period were ¥41 million. There were also no significant changes in the status of research and development activities during the current second-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥41 million and states that there were no significant changes in the status of research and development activities. - FY2021-Q1RestatedAnnual report
「Research and development expenses for the current first-quarter consolidated cumulative period were ¥17 million. There were also no significant changes in the status of research and development activities during the current first-quarter consolidated cumulative period.」
The company recorded research and development expenses of ¥17 million and states that there were no significant changes in research and development activities. - FY2020AdvancedAnnual report
「Depressurization management under this program began in fiscal 2015. To date, it has helped prevent decompression sickness among workers engaged in high-pressure operations at 45 pneumatic caisson construction projects, contributing to safety and health management.」
The track record for deploying proprietary technology increased from 31 to 45 projects under the depressurization management program. The company also reports multiple technology development achievements, including a fully unmanned narrow-section construction method, hard-ground excavation, advanced construction management and steel caisson cutoff methods. - FY2020-Q3RestatedAnnual report
「Research and development expenses for the current third-quarter consolidated cumulative period were ¥66 million. There were also no significant changes in the status of research and development activities during the current third-quarter consolidated cumulative period.」
The company states that there were no significant changes in research and development activities and reports research and development expenses of ¥66 million for the current third-quarter cumulative period. - FY2020-Q2RestatedAnnual report
「Research and development expenses for the current second-quarter consolidated cumulative period were ¥40 million. There were also no significant changes in the status of research and development activities during the current second-quarter consolidated cumulative period.」
The company states that there were no significant changes in research and development activities and reports research and development expenses of ¥40 million for the current second-quarter cumulative period. - FY2020-Q1RestatedAnnual report
「Research and development expenses for the current first-quarter consolidated cumulative period were ¥10 million. There were also no significant changes in the status of research and development activities during the current first-quarter consolidated cumulative period.」
The company states that there were no significant changes in research and development activities and reports research and development expenses of ¥10 million for the current quarter. - FY2019AdvancedAnnual report
「Depressurization management under this program began in fiscal 2015 and has, to date, prevented decompression sickness among hyperbaric workers at 31 pneumatic caisson construction projects, contributing to safety and health management.」
Regarding the deployment of proprietary technologies, the number of projects using the depressurization management program increased from 28 to 31. The disclosure also describes development and adoption results for 100% unmanned construction methods, narrow-section construction methods, construction management systems, the DAPPI Method, precast technology and other technologies. - FY2019-Q3RestatedAnnual report
「Research and development expenses for the cumulative third quarter of the current consolidated fiscal year were ¥55 million. There were also no material changes in the status of research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
It recorded ¥55 million in research and development expenses and explains that there were no material changes in the status of research and development activities. - FY2019-Q2RestatedAnnual report
「Research and development expenses for the cumulative second quarter of the current consolidated fiscal year were ¥35 million. There were also no material changes in the status of research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
The Company states that research and development expenses were ¥35 million and that there were no material changes in the status of research and development activities. - FY2019-Q1RestatedAnnual report
「Research and development expenses for the cumulative first quarter of the current consolidated fiscal year were ¥16 million. There were also no material changes in the status of research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
The Company states that research and development expenses were ¥16 million and that there were no material changes in the status of research and development activities. - FY2018AdvancedAnnual report
「Depressurization management under this program began in fiscal 2015 and has, to date, prevented decompression sickness among hyperbaric workers at 28 pneumatic caisson construction projects, contributing to safety and health management.」
Regarding the development and deployment of proprietary technologies, the disclosure specifically states that the depressurization management program has been applied at 28 projects. It also describes the introduction of CIM to improve construction efficiency and several new construction methods and construction management technologies developed. - FY2018-Q3RestatedAnnual report
「Research and development expenses for the cumulative third quarter of the current consolidated fiscal year were ¥44 million. There were also no material changes in the status of research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
The Company recorded research and development expenses of ¥44 million and states that there were no material changes in the status of research and development activities. - FY2018-Q2RestatedAnnual report
「Research and development expenses for the cumulative second quarter of the current consolidated fiscal year were ¥25 million. There were also no material changes in the status of research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
The Company recorded research and development expenses of ¥25 million and states that there were no material changes in the status of research and development activities. - FY2018-Q1RestatedAnnual report
「Research and development expenses for the cumulative first quarter of the current consolidated fiscal year were ¥9 million. There were also no material changes in the status of research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
The Company states that research and development expenses were ¥9 million and that there were no material changes in research and development activities. - FY2017AdvancedAnnual report
「The Company developed the New DREAM Method, which combines the DAIHO Pneumatic Caisson Method with a multifunctional caisson excavator, an excavator maintenance system, an atmospheric-pressure elevator, the DHENOX System (helium-mixed gas system), a remote bearing-capacity testing device and other equipment, enabling 100% unmanned construction for major hyperbaric operations. The method was selected by the Ministry of Land, Infrastructure, Transport and Tourism as a designated technology theme and was adopted for the launch shaft of a two-lane road-section shield tunneling project, where construction has been completed.」
The disclosure describes specific development and construction results relating to lower costs, improved safety and shorter construction periods through proprietary technologies, including 100% unmanned operation and completed construction using the New DREAM Method, as well as completed construction using the narrow-section caisson method. - FY2017-Q3RestatedAnnual report
「Research and development expenses for the cumulative third quarter of the current consolidated fiscal year were ¥41 million. There were also no material changes in the status of research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
The Company states that research and development expenses were ¥41 million and that there were no material changes in the status of research and development activities. - FY2017-Q2RestatedAnnual report
「Research and development expenses for the cumulative second quarter of the current consolidated fiscal year were ¥23 million. There were also no material changes in the status of research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
The Company states that research and development expenses were ¥23 million and that there were no material changes in the status of research and development activities. - FY2016First statedAnnual report
「In its research and development activities, the Company is actively pursuing the development and improvement of proprietary technologies for greater depth in response to changes in social conditions, with the aim of expanding orders. To reduce construction costs and improve safety, it is working on construction methods that enable unmanned and remote operation, as well as precast construction to shorten construction periods.」
The Company aims to reduce construction costs, improve safety, shorten construction periods and expand orders through unmanned operation, remote operation and precast construction. The disclosure also describes results from the New DREAM Method, the Narrow-Section Pneumatic Caisson Method and the DRES Method, among others.