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Construction method Product List

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Construction method: KTB - Load Distribution Type Permanent Anchor Method

Construction method: KTB - Load Distribution Type Permanent Anchor Method

The world's first permanent anchoring method based on a groundbreaking theory.

The KTB load distribution type permanent anchor method is a groundbreaking structure that distributes loads by providing multiple load-bearing bodies, making it the world's first permanent anchor of its kind. It avoids localized concentration of loads, preventing cracks in the grout. It excels in long-term corrosion resistance, durability, and structural stability. NETIS Registration No: KT-990136-A

  • Ground foundation construction method

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Construction Method: KTB Pull-Type SC Anchor Method

Construction Method: KTB Pull-Type SC Anchor Method

High durability tension-type ground anchor with excellent workability and easy maintenance management.

The globally widespread tension-type anchor can cause cracking in the grout due to localized load concentration, leading to issues such as tendon corrosion. This construction method uses fully coated PC steel wire <SC strand> and is a permanent anchor that solves this problem all at once. NETIS Registration No: KT-990247-V

  • Earth retaining wall/foundation reinforcement
  • Earthworks
  • Ground foundation construction method

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Construction Method: Super Metal Frame Method

Construction Method: Super Metal Frame Method

Achieved significant cost reduction.

The frame made of Galvalume pseudo-container steel plate utilizing high-tech technology is completely rust-proof and exhibits excellent durability and weather resistance. Additionally, it is extremely lightweight due to its hollow sealed design (about 1/6 the weight of conventional concrete pressure plates), allowing for construction without the need for large machinery, making it practical and economical. NETIS Registration No: KT-000115-A

  • Retaining wall
  • Earthworks
  • Pile and foundation work

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KTB anchoring method

KTB anchoring method

It is a post-tensioning method for prestressed concrete anchoring construction.

The KTB anchoring method is a post-tensioning type of prestressed concrete anchoring technique applicable to all PC structures, encompassing a system that includes the basic anchoring body, PC steel strands, connectors, and more. The KTB anchoring method is adopted in a wide range of civil engineering and construction fields, such as PC bridges, building structures, PC tanks, marine structures, and ground anchors, due to its excellent workability, safety, high quality, and cost-effectiveness. In April 1978, the KTB Association was established to promote the dissemination, technological advancement, and development of this method. Additionally, SC strands (epoxy-coated PC steel strands) are ultra-durable PC steel strands with groundbreaking anti-corrosion technology, having obtained construction technology certification from the Civil Engineering Research Center in April 1995 (Chairman: Naoharu Ikeda, Professor at Yokohama National University). Thus, we take pride in confidently recommending the KTB anchoring method and SC strands as technologies that meet the needs of a new era. For more details, please contact us or refer to our catalog.

  • Secondary steel products
  • Foundation construction
  • Other civil engineering works

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KTB・PCaPC External Frame Seismic Reinforcement Method

KTB・PCaPC External Frame Seismic Reinforcement Method

Excellent seismic performance! Redesigned / Seismic reinforcement using rapid construction PC jointing method.

The "KTB・PCaPC External Frame Seismic Reinforcement" is a seismic reinforcement method that enhances the seismic performance of existing buildings using the PC joint construction method, allowing for continued use even after a major earthquake. Columns and beams are manufactured from high-quality, high-strength PC materials in a factory, enabling rapid construction on-site. Additionally, it allows for the renovation of the building's facade without altering the current living environment in terms of natural light and ventilation, creating a new image. 【Features】 ■ Possesses elastic properties that allow it to return to its original state even after significant deformation from a massive earthquake. ■ Construction can be carried out while the building is in use. ■ Seismic reinforcement work can be completed safely and in a short period. ■ Ground anchors can prevent the building from toppling during an earthquake. ■ Technical evaluation report obtained from the Japan Architectural Disaster Prevention Association. For more details, please refer to the catalog or feel free to contact us.

  • Earthquake-resistant construction method
  • Renovation and repair methods

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KTB System Comprehensive Catalog

KTB System Comprehensive Catalog

Publication of KTB anchoring methods, including KTB fixation methods, construction examples in architecture and civil engineering, etc.

The "KTB System Comprehensive Catalog" is a comprehensive catalog from KTB Corporation, which is engaged in the development of new materials, technologies, and construction methods in civil engineering, component systems, and architecture. It includes the "KTB Anchorage Method," which is a fixation method for prestressed concrete, as well as the "KTB Anchor Method," and examples of construction in architecture and civil engineering. [Contents] ■ Examples of construction in architecture and civil engineering ■ KTB Anchorage Method ■ KTB Anchor Method ■ Types of KTB Anchor Method ■ Pressure plates for KTB Anchor Method, etc. For more details, please refer to the catalog or feel free to contact us.

  • Ground foundation construction method
  • Earthquake-resistant construction method
  • Renovation and repair methods

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Construction Method: U-Turn Removal Anchor Method

Construction Method: U-Turn Removal Anchor Method

Complete removal of PC steel strands that are underground obstacles.

The U-turn removal anchor method is the world's first load-distributing removal anchor developed for pulling out PC steel strands after the installed rock anchors have been used. By adjusting the load-bearing bodies according to the designed anchor force, the PC steel strands are turned back at the tips of each load-bearing body, allowing for uniform tension and fixation across each load-bearing body.

  • Earth retaining wall/foundation reinforcement
  • Earthworks
  • Ground foundation construction method

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KTB external cable construction method

KTB external cable construction method

This is the KTB external cable construction method using "SC Unbond" with the latest corrosion protection technology.

The Kansai East Connecting Road is a "regional high-standard road" that connects Saitama Prefecture (Kanetsu Expressway, Hanazono Interchange) and Yamanashi Prefecture (Shin-Yamanashi Ring Road). It aims to promote the exchange of people and goods between the northern Kanto region and the Koshin and Tokai regions, and to revitalize the economy and tourism as a new high-speed network road under construction. Among these, a five-span continuous PC box girder bridge (tentatively named New Mainano Bridge, main span 725.5 m) is being constructed on the rising lane on the Mainano Town side, which crosses the Arakawa River and the Chichibu Railway as part of the Kainano Chichibu Bypass. The external cables of this bridge have adopted SC Unbonded (SC-U1e). For more details, please contact us or refer to the catalog.

  • Steel
  • Dam construction
  • grout

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Examples of KTB repair and reinforcement: RC bridges, PC bridges, steel bridges.

Examples of KTB repair and reinforcement: RC bridges, PC bridges, steel bridges.

This is the reinforcement of the KTB external cables using corrosion-resistant PC steel materials that have obtained construction technology examination certification.

The external cable reinforcement method aims to improve bending and shear resistance by placing PC steel materials outside the member and applying tension through anchorage or deflection points. The KTB external cable reinforcement method uses PC steel materials that are particularly excellent in corrosion resistance and fatigue resistance, and employs SC unbonded or Ducst unbonded materials that are not subject to UV degradation. For more details, please contact us or refer to the catalog.

  • Steel
  • Reinforcement and repair materials
  • Foundation construction

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Vertical Ground Anchor Method for This Project

Vertical Ground Anchor Method for This Project

Five-layer rust prevention! A highly reliable anchoring method for preventing toppling and uplift in mid- to high-rise buildings.

The "KTB Vertical Ground Anchor Method" uses fully rust-proof strands for tendons, equipped with ultra-rust prevention features, effectively functioning for seismic reinforcement, preventing toppling, and preventing uplift. It reliably transmits the designed anchor force to the ground, forming an extremely safe permanent anchor body. You can choose between two permanent anchor methods: the "KTB Load Distribution Type Permanent Anchor" and the "KTB Tension Type SC Permanent Anchor," both of which have obtained technical review certification from a Ministry of Land, Infrastructure, Transport and Tourism accredited organization. 【Features】 ■ Maintains stable pull-out resistance ■ Excellent corrosion resistance ■ Construction and economic efficiency tailored to ground conditions ■ Ease of maintenance and management ■ Permanent anchor methods with technical review certification For more details, please refer to the catalog or feel free to contact us.

  • Ground foundation construction method
  • Earthquake-resistant construction method
  • Renovation and repair methods

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SC Strand & KTB Stabilization Method

SC Strand & KTB Stabilization Method

Achieves excellent adhesion performance, rust prevention performance, and fatigue resistance performance! A method that allows for free re-tensioning.

The "SC Strand & KTB Anchorage Method" uses SC strands, which are PC steel wires with a full wire coating, as the tensioning material and employs both wedges and nuts for anchoring. "SC Strand" is formed by thermally fusing epoxy resin powder coating onto each core wire and side wire of the PC steel wire using an electrostatic powder coating method, achieving complete rust prevention. The film thickness is between 120 and 280 µm, allowing for direct attachment of crimp grips and demonstrating excellent anchoring performance. 【Features】 - Eliminates set loss during anchoring, allowing for free re-tensioning - High durability - Excellent anchoring performance - Superior fatigue performance - Reduction in construction costs For more details, please refer to the catalog or feel free to contact us.

  • Special Construction Method
  • Bridge Materials

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