OUR SOLUTION Our Research and Development Activities Aiming to develop innovative technologies for resolving social challenges

Using Our Accumulated Technologies for Addressing Social Challenges Taisei Corporation's Solution Technologies

Our mission is to build a society where all citizens can live securely and safely, and to continue developing technologies that help enhance the society in the future. Our quality and technologies are based essentially on our commitment to customers, as well as end users. Taisei Corporation's solution technologies for resolving social challenges are outlined below, based on a classification with four categories.

ICT Construction Work and Contributing to Post-Disaster Reconstruction and Restoration Efforts

Next-Generation Unmanned Construction System "T-iROBO® Roller & Breaker"

  • Development
  • Demonstration
  • Application

T-iROBO® Roller

T-iROBO® Breaker

We developed and demonstrated the next-generation unmanned construction system T-iROBO Roller & Breaker, a system equipped with automated fill soil pressure-changing and big rock-crushing functions. This system performs construction work automatically with the surroundings evaluated by a machine unit equipped with sensors equivalent to a human being's five senses, and with an independently-developed control algorithm. The system can also be used for post-disaster reconstruction and restoration projects. Having been selected for the Construction Technology Research & Development Subsidy Program by the Ministry of Land, Infrastructure, Transport and Tourism, the T-iROBO Roller & Breaker system is likely to have a variety of new applications.

Measures for Improving Convenience and Saving Energy

Air Curtain-Making Clean Space "T-Clean® Air Wall"

  • Development
  • Demonstration
  • Application

The air curtain reduces amount of dust by at least 99%

We developed and demonstrated an air curtain-based clean booth system called the T-Clean Air Wall, a booth designed for clean rooms at production facilities. Without any physical walls, the user can enter the booth while keeping hands on a moving cart, which greatly improves convenience. The air curtain-based air wall is made only for the space required for a task, offering superior energy-saving benefits.

Effective Use of Energy and Resources

Wireless Power Transmission Technology for Moving Electric Vehicles

  • Development
  • Demonstration
  • Application

We developed Wireless Power Transmission Technology, a technology for sending high-frequency electric energy to a road, allowing Electric Vehicles to tap electricity wirelessly. After building an asphalt road on the premises of Toyohashi University of Technology, we conducted manned driving trials with a batteryless electric vehicle (EV). In the foreseeable future, we aim to commercialize this technology for delivery systems used at factories and logistics centers.

Streamlining Work Implementation

New Mountain Tunneling Work Technology "T-SPD" "T-WELL_PLANNER"

  • Development
  • Demonstration
  • Application

T-SPD

T-WELL_PLANNER

We developed and demonstrated tunnel face front exploration technology called T-SPD, a technology for accurately identifying geological conditions at a site up to 500 meters ahead of the tunnel face utilizing an ultra-long controlled boring. Moreover, we developed the drainage countermeasure planning tool called T-WELL_PLANNER, a tool that enables automatic data processing, such as for installing drainage borings, alignment plan, and displaying groundwater flow prediction analysis results. This tool allows the user to handle the drainage countermeasure effectively.

Work Streamlining and Labor-Saving

Survey Navigation System"T-Mark. Navi®"

  • Development
  • Demonstration
  • Application

Work status using "T-Mark. Navi®"

Based on a combination of an eyeglass-based wearable device and surveying gear, we developed T-Mark. Navi, a technology that allows a user to perform surveys unaided, a process that previously required a pair of workers. This technology is applied at our construction work sites, and will streamline work and save labor at our construction and civil engineering work sites.

Streamlining Work, Anti-Earthquake Measures, and Renewal

Column Part Seismic Retrofit Method "CF Panel Work Method"

  • Development
  • Demonstration
  • Application

CF panel

Column retrofit using the CF Panel Work Method

Jointly with Seiwa Renewal Works, we developed and demonstrated the CF Panel Work Method, a column part seismic retrofit work method that uses a carbon fiber combined panel (CF panel) composed of a continuous carbon fiber sheet and a flexible board. Being light weight and able to be installed within a short time, the panel is effective for reinforcing seismic isolation levels at a work space-constrained site and for a project with a short work term.

Anti-Earthquake Measures and Renewal

Passive Switching Oil Damper "Urban-Style Small Displacement Seismic Isolation System"

  • Development
  • Demonstration
  • Application

Urban-Style Small Displacement Seismic Isolation System (Switching oil damper)

We developed the Urban-style Small Displacement Seismic Isolation System, a passive switching oil damper that allows a space-constrained urban site to be maximally utilized. This system is used for the ZEB Demonstration Building of the Taisei Technology Center. Having acquired seismic isolation material certification from the Minister of Land, Infrastructure, Transport and Tourism, this system can be used for all types of new and existing seismic isolation building, from low- to mid-rise buildings to super-high-rise buildings, based on a function to switch resistance level according to earthquake tremor level, thereby exercising optimal seismic isolation performance.

Anti-Earthquake Measures and Renewal

"Post-Head-Anchor®" Work Method Based on a Post-Installed Bonded Anchor with a Small Head Plate

  • Development
  • Demonstration
  • Application

Work status

Overview of the Post-Head-Anchor® work method

We developed the Post-Head-Anchor work method, based on a post-installed bonded anchor with a small head plate, which is designed for seismic retrofits and structural extensions of existing concrete buildings. Having acquired general certification from the Building Center of Japan, this work method can be used even in buildings for which building certification application under the Building Standards Act is required to be filed for building extension or renovation.

Anti-Earthquake Measures and Renewal

"Residual Deformation Technology" for Liquefying Ground with Three- Dimensional Static Analysis Method

  • Development
  • Demonstration
  • Application

Disaster simulation of Great East Japan Earthquake

We developed a technology that easily predicts liquefied ground deformation with a three-dimensional static analysis method. This technology allows a user to quickly predict to what extent a building is likely to sink due to liquefaction in a high-accurate manner. We will use this technology to consider safer and more effective countermeasures against liquefaction, especially targetting seafront plants.

Purification of Contaminated Water

Microorganism-Based Purification of Contaminated Water "1,4-Dioxane Degrading Technology"

  • Development
  • Demonstration
  • Application

1,4-dioxane degrading bacteria Won an award of excellence at the 2015 Nikkei Global Environmental Technology Awards

We developed and demonstrated the 1,4-Dioxane Degrading Technology, Japan’s first-ever purification technology to use degrading bacteria D17 for efficiently processing underground water containing the environment-polluting substance 1,4 dioxane.*1 This technology can be used at a lower cost than conventional purification technologies. Through joint research by Taisei Corporation, Osaka University and Kitasato University, we aim to use it for domestic and overseas projects.

1 1,4-dioxane: Designated as a substance subject to environmental regulation, it is a chemical substance that is suspected of being cancer-causing, among other effects on a human body, and it does not readily degrade in a natural environment.

Purification of Contaminated Water

Microorganism-Based Purification of Contaminated Ground Water "Chlorinated Ethylene Degrading Technology"

  • Development
  • Demonstration
  • Application

Microscope photo of RHA1 strain

We developed and demonstrated Chlorinated Ethylene Degrading Technology, a purification technology to inject RHA1 strain capable of degrading chlorinated ethylene*2 in ground water. Using RHA1 strain, this technology can safely purify chlorinated ethylene-based contamination, accounting for over 80% of volatile organic compounds in underground water contamination incidents, without generating harmful substances subject to environmental regulation in the process and within a much shorter time than before.

2 Chlorinated ethylene: A type of liquid created by combining ethylene with chlorine. Trichloroethylene and tetrachloroethylene, having been used widely as a detergent and a solvent for metal parts, are currently designated as substances subject to environmental regulation because these substances have been found to be harmful.

Comfort and Environmental Risk Measures

Noise-Reduction Technologies "T-Silent® Series"

  • Development
  • Demonstration
  • Application

We developed the T-Silent® Series, a series of noise-reduction technologies using a double-floor structure, among others, to greatly reduce floor impact sound and solid-borne sound. This series reduces noise by employing an optimal work method chosen from among four work methods, or a combination of work methods chosen from among them, according to the various conditions of a building. In the future, we will use these technologies for housing complexes, as well as buildings close to railroad tracks.