Research and Development Activities

Developing and Providing Technologies for Solving Society's Problems, Aiming for Innovative Technological Development
Structural Construction Method

This is an environmentally-friendly efficient high-rise building demolition system in which high rise building is demolished from top to bottom. This has already been applied to the demolition of two high-rise buildings more than 100 m high in Tokyo, such as the Grand Prince Hotel Akasaka.

Structural Construction Method
Disaster Prevention

The performance of a vibration control system for automated warehouse racks was verified, and the effect of reducing goods falling from the racks during an earthquake was confirmed. Using this system, it is possible to reduce the vibrations of automated warehouse racks in a strong seismic intensity 6* earthquake, and it is possible to place and remove goods without stopping the system.

Disaster Prevention

*Japanese scale

Materials

In order to process large quantities of concrete rubble generated in a disastrous earthquake in a short period of time, a method of producing and applying a hardened cement material was developed that can ensure the required strength and quality of the structure, while permitting variation in the aggregates and inclusion of timber fragments. This was adopted by the Ministry of Land, Infrastructure, Transport and Tourism's public tender "Construction Technology Research and Development Assistance System".

Materials
Structural Construction Method

Using ultra-high strength concrete, it is possible to reduce the number of columns supporting a building, to make them more slender, and to realize comfortable and easy to use living spaces. Seismic resistance tests on very narrow columns using Taisei Super-concrete, the world's strongest concrete, have been carried out at the Taisei Technology Center. The plaza in "Ochanomizu Solar City" uses 300N/mm2 class ultra-high strength concrete, producing a space with a feeling of openness.

Structural Construction Method
Disaster Prevention

An in-ground wide blade ground improvement method, and a groundwater lowering method to lower the groundwater level have been developed as measures against liquefaction that can be applied to the ground below existing buildings such as in residential areas, etc. A verification test has been carried out at Urayasu City where liquefaction damage occurred in the Great East Japan Earthquake.

Disaster Prevention
Structural Construction Method

There has been a demand in recent years for the introduction of unmanned construction technology for use in dangerous areas, etc. Taisei Corporation has developed a sprayed asbestos unmanned removal and recovery system using a remote-controlled robot under commission from the New Energy and Industrial Technology Development Organization (NEDO). Using the results of this development, unmanned operations can be rapidly and safely carried out even in severe environments.

Structural Construction Method

Topic1:Taisei Technology Center started a five-year facility enhancement plan, aimed at innovative technological development

To further enhance the research and development system and to strengthen the performance of Taisei Corporation, facility enhancement is being carried out progressively over five years which started in July 2012.
Since the Great East Japan Earthquake, the construction market has suddenly focused on disaster prevention and energy fields, and higher performance higher added value new technologies are demanded.
The facility enhancement will include new facilities for development of new technologies, to create new technologies in response to these needs. These new capabilities of the Taisei Technology Center will be fully utilized in the future to promote innovative technological development to contribute towards the reduction in global environmental load and to build a nation that is strengthened against natural disasters.

Topic1:Taisei Technology Center started a five-year facility enhancement plan, aimed at innovative technological development

Topic2:Participation in Yokohama Smart City Project (YSCP)*

We are participating in the YSCP project aimed at realizing a "smart city" with optimum energy use over the whole area and have energy available during times of disaster. Within the Taisei Technology Center, in conjunction with a local energy management system, the building energy management is being verified to achieve both efficient energy use and comfort (jointly implemented with Toshiba Corporation).

Topic2:Participation in Yokohama Smart City Project (YSCP)*
* This project is a joint initiative of Yokohama city with private companies, and has been selected by the Ministry of Economy, Trade and Industry's "Next-generation Energy and Social System Verification Area".
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