KAJIMA Annual Report 2004back to Index
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Research & Development
R&D Topics Visionary Solutions
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Water Screen Fire Disaster Prevention System - Water Screen Fire Disaster Prevention System -
Water Screen Fire Disaster Prevention System
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Kajima's long-term commitment to innovative research and development is a strong indicator of the Company's future potential. Kajima was the first Japanese construction company to establish a dedicated R&D organization. Since then, the work of the Kajima Technical Research Institute, the Kobori Research Complex, and other R&D centers have won Kajima a sterling worldwide reputation for technological expertise. As a result of the significant resources Kajima has devoted to R&D over the years, the Company is now better prepared than its competitors to meet the rapidly diversifying needs of clients and society. Today, Kajima still has one of the top R&D organizations in the industry in terms of number of researchers, facilities, and level of investment, and is the acknowledged leader in a variety of fields.

Kajima's construction and civil engineering technologies, including earthquake safety technologies, are among the most advanced in the world, and the Company is rapidly emerging as an innovator in the field of environmental technology. Its staff and facilities for biomass, forestry, and marine research are second to none in Japan. Kajima researchers have also done much to improve the productivity and quality of the Company's construction operations. The Company also partners with universities, public institutions, and other private firms on research in the fields of renovation, life-cycle engineering (LCE), and the environment.

In the term under review, Kajima linked its R&D programs more directly to business strategy, allocating more resources to the development of innovative proposals for both public and private sector projects. The Company also retooled its R&D management system to ensure that R&D outcomes lead more quickly to specific business results. R&D investment (non-consolidated) for the term was yen10.9 billion, or 0.93% the amount of net sales.

Most recently, Kajima has achieved strong R&D results in the fields of urban renewal, environmental technology, renovation, LCE, and earthquake prevention. A few examples are featured at right.

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NEO Column Construction Method
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This new construction method for low-rise buildings takes less time and money than conventional steel-frame construction, while also improving quality, strength, and building life. It utilizes a composite structure consisting of steel-frame beams and hollow centrifugal precast concrete columns made of prestressed high-strength concrete.
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NEO Column Construction Method
NEO Column Construction Method
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Air Sparging Using Directionally Drilled Horizontal Wells
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Kajima joined forces with Tokyo Gas Co., Ltd., and Tokyo Gas Engineering Co., Ltd., to develop this new air sparging method. The technology enables the removal of VOCs and other contamination even beneath existing buildings, which has been almost impossible to date. Further, with the large zone of influence of each horizontal well, remediation can be accomplished at a lower cost, not only beneath buildings, but also in conventional locations.
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Air Sparging Using Directionally Drilled Horizontal Wells
Air Sparging Using Directionally Drilled Horizontal Wells
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Water Screen Fire Disaster Prevention System
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This innovative technology is designed to save as many lives as possible in the event of a fire in a closed underground space or tunnel. A screen of water, sprayed in 200micro-size droplets, partitions the fire zone, isolating about 80% of the heat and smoke and washing out harmful floating particles-all without interfering with fire fighting or rescue activities. The system, designed based on evacuation simulations and 3D analyses of heat behavior, can be installed in new and existing structures
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Total Construction System for Traffic Infrastructure Shield Tunnels
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With the increasing demand for urban renewal in densely populated Japan, infrastructure must often be constructed deep underground-even under existing urban areas. Kajima's new system, which works seamlessly with conventional techniques for large-diameter shield tunnels, enables the construction of special structures in underground tunnels such as emergency parking bays and ramp tunnels.
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Electromagnetic Shield Wallpaper
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People working in contemporary offices rely heavily on wireless LAN and mobile phones. Wireless devices, however, require a controlled electromagnetic environment to function properly. Kajima's Electromagnetic Shield Wallpaper, which is easy to install in new or existing buildings, converts normal walls into shields, creating the controlled spaces needed for wireless communications.
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Electromagnetic Shield Wallpaper: Comparison of Shield Installation Methods
Electromagnetic Shield Wallpaper: Comparison of Shield Installation Methods
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> Kajima Group Medium - Term Business Plan
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> Overseas Operations
> Research & Development
> Environmental Initiatives
> Financial Section
> Network in Japan
> Overseas Network
> Board of Directors and Auditors
> Corporate Data
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