Transportation Road

We provide services related to the "maintenance" of roads in Japan and around the world, including surveys, planning, design, and construction supervision, as well as "management" services for functional preservation and improvement, and maintenance and management. Roads play an important role in social and economic development, regional revitalization, logistics efficiency, elimination of serious traffic congestion in urban areas, countermeasures against global warming, and national land resilience, etc. We promote road maintenance from the perspective of consumers and users in cooperation with airports, ports, rivers, railroads, information, disaster prevention, environment, and maintenance management.

Engineering Services

In the road maintenance business, we provide a wide range of expertise and services, including road design, construction planning, budgeting, quality control, and sustainable environmental considerations. We support the development and construction of efficient and sustainable road networks, taking into account local traffic needs and regulations, thereby contributing to smoother and safer transportation and economic development. Road improvement projects in construction consulting are important projects that provide social benefits and play a vital role in regional development.

In the planning and design of bridges and structures, we provide technology based on five main areas of expertise: structural planning, numerical analysis, seismic technology, landscape design, and technology development. We carry out basic planning and design of elevated bridges in cities, large bridges spanning rivers and harbors, and even special bridges constructed in airports. In structural planning, we propose optimum structures and erection plans by illustrating basic conditions and local constraints. Numerical analysis includes FEM analysis of steel-concrete composite structures, and seismic analysis of the entire structure including soft ground. In landscape design, we provide 3D-CG of the entire bridge design and color plan in harmony with the surrounding environment. In the development of new technologies and construction methods, we work with universities to construct unique technologies to further improve seismic performance, such as damage-free seismic isolation mechanisms.

In steep mountainous areas, rivers, and straits, we identify possible construction methods (NATM, shield, open-cut, and submerged) at the planning stage, and compare and select the most appropriate method. In the design phase, we perform "selection of appropriate support structures," "analysis and structural calculation for verification of auxiliary construction methods and effectiveness in vulnerable areas," "selection of tunnel entrance locations," "construction planning," and "landscape design. We also plan ventilation, lighting, and emergency facilities, as well as periodic inspections and repair plans to ensure safe tunnel use. If it is difficult to plan a new tunnel, we are also involved in all aspects of underground structures, such as proposing renewal plans to widen tunnels while maintaining in-service traffic.

Since it is important to improve the seismic resistance of a bridge as a whole, rather than just reinforcing damaged members, we provide cost-effective technology by using various devices such as dispersion and seismic isolation functions. In addition, our Central Research Laboratory conducts dynamic centrifuge loading model experiments to study the failure modes and seismic countermeasures of highway embankments during large earthquakes. In addition, we support more efficient and effective projects by formulating seismic reinforcement plans that take into account the required seismic performance and the importance of bridges according to the characteristics of the route and other factors.

We provide solutions to various issues in the maintenance and management of road infrastructure by offering a package of inspection/diagnosis, study/design, planning, and management services. In the area of inspection and diagnosis, we support the development and introduction of new technologies such as 3D models, inspection and diagnosis applications that utilize AI technology, and monitoring technology, as well as accurate inspection and diagnosis based on our accumulated know-how, in order to enhance the sophistication and efficiency of our services. In addition, for road facilities such as bridges and tunnels, we will support the formulation of longevity plans that aim to extend the service life of facilities by shifting from conventional symptomatic repair and renewal to preventive repair. In the daily management of roads, we support the formulation of measures to implement road maintenance and management more efficiently within a limited structure and budget, such as the introduction of new technologies and DX, and new maintenance and management schemes such as public-private partnerships.

We are working on public-private partnerships to utilize private sector technology, know-how, and ingenuity in road maintenance and maintenance projects, participating in project promotion PPPs and comprehensive private sector outsourcing, and providing management support. In order to ensure that maintenance and management projects can proceed smoothly in a rapidly changing business environment, we are developing efficient and effective management systems that seamlessly link data across the scope of work, optimize overall and centralized management, and integrate management and systems so that information can be shared in real time and prompt judgment and decision-making can take place. We also develop and provide a system that integrates management and systems, enabling information to be shared in real time for quick decision-making and decision-making. To implement this structure, we develop and provide integrated systems that integrate various management functions, multiple support systems, and digital tools.

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