Business introduction

Structural/Railway design and Risk evaluation of infrastructures

In this field, we forecast and evaluate diverse risks and consider appropriate measures for various facilities, including social infrastructure. As various community facilities that were developed during the period of high economic growth reach the end of their useful lives, the number of relevant inspection and diagnostic (forecast and evaluation) operations and measures (repair and reinforcement design) is increasing, especially for bridges. Particularly life extension repair plans, including repair plans and future inspection schedules, based on the results of the bridge inspection, have been proposed not only for local governments but also to national government projects as well as to the expressway management. And in recent years, we have also worked on the development of technologies for monitoring the state of bridges and automating inspections.
In addition, structural operations are within the scope of our service. Recently, we have been engaged in the design of new bridges, especially the design of many bridges for railway structures, such as the new Shinkansen （bullet train）lines, where we have been involved in the design of the western route of the Kyushu Shinkansen, the route of the Hokuriku Shinkansen which is located west of Kanazawa Station, Chuo Shinkansen, etc.

• Inspection of bridges
  
  We conduct periodic inspections and implement third-party damage prevention measures for road bridges managed by the Ministry of Land, Infrastructure, Transport and Tourism as well as local governments. Qualified professional engineers and concrete diagnosticians identify the cause of damage to bridges and assesses the degree of damage accurately by “touching” the bridges to be inspected. Additionaly, various detailed investigations, such as chloride content tests, are conducted as needed to identify the cause of damage.
  Our group conducts periodic inspections of over 100 bridges per year and has made significant achievements.
• Inspection of tunnels
  
  We conduct periodic inspections of road tunnels managed by the Ministry of Land, Infrastructure, Transport and Tourism and local governments. The purpose of the periodic inspections is to prevent damage to users from fallen concrete and to detect distortions in the early stages for the implementation of appropriate preventive measures. Qualified personnel conduct proximal visual checks, palpations, and hammering tests to check the condition of the lining concrete lighting and other accessories , and diagnose the soundness of the structures. In addition, if necessary, a detailed investigations of the hollow on the back of the lining is conducted and reflected in the evaluation of the inspection results. Our group conducts periodic inspections of many tunnels every year and has made significant achievements.
• Assessment of the disaster caused by the Kumamoto Earthquake
  
  We conducted disaster assessments of bridges for reconstruction after the Kumamoto Earthquake (such as consideration for restoration). Targeting bridges damaged by the earthquake, we implemented the design of temporary emergency measures and provided a detailed earthquake disaster damage investigation for restoration of the living environment for local residents,in the early stages, detailed earthquake damage investigation and restoration studies in order to restore the previously existing functions.