JFEシビル List of Products and Services

We would like to introduce a case study of the "Grid Metal Method" that our company handles. We carried out bridge repair work on the Nyu-no-ki Bridge, a first-class bridge built in 1964, located on National Route 120. To accommodate the design load from T-20 to the current standard of T-25 and to widen the road from 7.7m to 8m, we reinforced the deck slab. Grid metal was placed in the cantilevered section. 【Case Overview】 ■ Project Name: Bridge Repair Work on Nyu-no-ki Bridge, National Route 120 ■ Client: Tochigi Prefecture, Nikko Civil Engineering Office ■ Construction Scale - Deck slab thickening work: 578m2 (of which, grid metal placement: 244m2) ■ Construction Period: April 2020 to March 2021 *For more details, please refer to the PDF document or feel free to contact us.

• Steel

We would like to introduce examples of the adoption of our "Nice Pole/Slip Form Method." In the renovation work (demolition and new construction) of an existing baseball field by Kawasaki City, a protective net pole was installed above the stands, reaching a height of approximately 30 meters above ground. This project is a two-phase construction, involving the manufacturing and installation of the poles and the complete work of net tensioning, among other tasks. Additionally, in the construction of an RC chimney at a coal-fired power plant, we adopted the "Slip Form Method," which is a safe and labor-saving method that allows for continuous construction of concrete walls. The height of the chimney is 165 meters, and the structure was constructed at a pouring height of approximately 2 meters per day. [Case Overview] <Nice Pole> ■Location: Kanagawa Prefecture, Todoroki Hardball Baseball Stadium ■Details: Protective net poles were installed above the stands, with a height of approximately 30 meters above ground. <Slip Form Method> ■Location: Yamaguchi Prefecture, T Power Plant Chimney ■Details: The chimney height is 165 meters, constructed at a pouring height of approximately 2 meters per day. *For more details, please refer to the PDF document or feel free to contact us.

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• Other safety equipment
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We would like to introduce a case study of our company's "Biomass Silo Slip Form Method." This method integrates the formwork and working floor, allowing them to be raised by jacks, which eliminates the need for scaffolding and formwork assembly processes, enabling continuous concrete pouring. For the construction of four silos, we planned to manufacture the slip form device (SF device) in a way that allows it to be divided, thereby shortening the replacement process. (Steel formwork and connection bolts will be newly used with each replacement of the SF device.) [Case Overview] ■ Location: Construction of four silos ■ Details - Planned to manufacture the slip form device (SF device) in a way that allows it to be divided, thereby shortening the replacement process. *For more details, please refer to the PDF document or feel free to contact us.

• Other safety equipment

This document introduces various examples of the "Metal Road Construction Method." It includes the construction work of the Komagome Dam in Aomori Prefecture, as well as the road improvement work on the Koiwai Motokoiwai Line in Saitama Prefecture. Images are also included, so please download and view them from the related catalog below. [Contents] ■ Aomori Prefecture Komagome Dam Construction Work ■ Saitama Prefecture Koiwai Motokoiwai Line Road Improvement Work ■ Yamanashi Prefecture General Prefectural Road Takashita Kashizawa Line Road Improvement Work ■ Shizuoka Prefecture (National) Route 136 Disaster Prevention and Safety Grant (National Road Reconstruction) Work ■ Wakayama Prefecture National Route 480 Mount Koya ■ Kumamoto Prefecture National Route 445 (Kuzurese Work Section) Vitality Infrastructure Grant (Road Improvement) Work *For more details, please refer to the PDF document or feel free to contact us.

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A road widening project has been planned between the Tokyo Electric Power Company's Hozumi Power Station (Chikuma River Water Intake Weir) and the JR Koumi Line. The "Metal Road Method" was adopted, as it allows for a pile arrangement that takes existing structures into consideration, minimizes the impact of terrain alteration, and reduces the superimposed load on the supporting piles. Additionally, to mitigate the impact on adjacent structures from pile driving, a steel pipe pile continuous down-the-hole hammer method was employed. The construction was successfully completed. 【Project Overview】 ■ Client: Nagano Prefecture Saku Construction Office ■ Total Length: 43.5m ■ Width: 4.55-5.75m ■ Number of Piles Driven: 20 ■ Weight of Steel Pipe Piles: 19.4t ■ Weight of Beams: 33.7t *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce examples of the "Nice Pole" that our company handles. At the existing hardball baseball field of Yokohama Sogakukan High School in Kanazawa Ward, Yokohama City, we replaced it with 18 galvanized poles with a height of 20 to 30 meters above ground. Additionally, the artificial turf was almost entirely replaced by another company, revitalizing the stadium. Furthermore, in the renovation work (demolition and new construction) of the practice area at Kasumigaseki Country Club in Kawagoe City, Saitama Prefecture, we replaced it with 9 painted poles with a height of 30 to 40 meters above ground. 【Case Overview】 <Adoption Location: Kanagawa Prefecture, Yokohama Sogakukan Hardball Baseball Field> ■Details: Replacement with 18 galvanized poles with a height of 20 to 30 meters above ground <Adoption Location: Saitama Prefecture, Kasumigaseki Country Club> ■Details: Replacement with 9 painted poles with a height of 30 to 40 meters above ground *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case where our "Super Jack System" for bearing replacement was adopted for a highway project. Traditionally, the operation of jacking up the superstructure during bearing replacement was done manually. This system allows one operator to control all hydraulic jacks, enabling construction without the need to assign personnel to each jack. In this project, we implemented the bearing replacement work by centrally and automatically controlling 26 hydraulic jacks. Additionally, it has been highly evaluated for its effectiveness and has been adopted for other projects as well. 【Case Overview】 <Challenges> ■ Traditionally, the operation of jacking up the superstructure during bearing replacement was done manually. <Solutions> ■ One operator can control all hydraulic jacks, allowing construction without the need to assign personnel to each jack. ■ Adjustment work using repair materials is also easy. ■ It is possible to save data on the load and displacement applied to the actual bearing. *For more details, please refer to the PDF document or feel free to contact us.

• Other safety equipment

Here is an example of the "Metal Road Construction Method" in Onagawa Town, Oshika District, Miyagi Prefecture. This method was adopted as part of the road construction project on the mainland side of the "Dejima Bridge Project," which connects the mainland to the islands. The construction site is surrounded by the sea and has access from only one direction, which was appreciated for allowing hand-extended construction with a single push. Additionally, due to its coastal location, the design takes into account aesthetics and corrosion prevention. 【Case Overview】 ■ Client: Onagawa Town, Miyagi Prefecture ■ Total Length: 90.0m ■ Width: 7.7m ■ Number of Piles: 90 ■ Weight of Steel Pipe Piles: 152.8t ■ Weight of Girders: 428t *For more details, please refer to the PDF document or feel free to contact us.

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Here is an example from the emergency road improvement and reconstruction project ordered by Yamanashi Prefecture. The Fujikawa-Minobu Line (Prefectural Road No. 10) is an important route designated as a second emergency transport road. The site had a thick alluvial fan layer, and existing structures (stone walls and drainage) were in close proximity, creating a challenging environment. As a result, the design and construction that could avoid interference with existing structures while ensuring traffic on the existing road was evaluated positively, leading to the adoption of the metal road construction method. 【Project Overview】 ■ Client: Yamanashi Prefecture, Kōnan Construction Office (Minobu Branch) ■ Construction Period: March 24, 2021 – August 31, 2022 ■ Total Length: 42.5m ■ Width: 7.0m (8.2m) *For more details, please refer to the PDF document or feel free to contact us.

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National Route 425 in Nara Prefecture is a road that facilitates regional exchange, connecting the city of Gobō in Wakayama Prefecture and the village of Totsukawa in Yoshino County, Nara Prefecture. However, there are continuous sections with narrow widths and poor alignment, making it difficult for vehicles to pass each other in many areas. Therefore, construction was carried out with the aim of eliminating the narrow width sections, ensuring safe and smooth passage, and contributing to tourism promotion. The site is located within the area of the World Heritage Kumano Kodo, and due to the need for consideration of the landscape and the preservation of water channels, the metal road construction method was adopted. 【Project Overview】 ■ Client: Nara Prefecture, Gojō Civil Engineering Office ■ Construction Period: January 5, 2022 - June 30, 2022 ■ Total Length: 19.0m ■ Width: 6.95m *For more details, please refer to the PDF document or feel free to contact us.

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●Double Steel Pipe Brace The damper consists of steel pipes, with the axial force pipe made of low yield point steel (JFE-LY225S). The outer pipe (reinforcing pipe) is structured to restrain the buckling of the axial force pipe. The double steel pipe brace can undergo plastic deformation without buckling during compression and has stable energy absorption capacity against repeated earthquakes. ●J-UP Brace The J-UP brace is a buckling-restrained brace that sandwiches a core material transmitting axial force between a pair of steel mortar plates, demonstrating stable restoring force characteristics even in high-strain regions.

• Steel

The "Super Jack System" supports safe and reliable construction based on a wealth of experience in jack construction, including method examination, rental and leasing of jack equipment, manufacturing and sales, and execution and operation. The Super Jack is slim and quiet yet powerful, safe, environmentally friendly, and performs reliably on site. 【Features】 ■ Suitable for narrow spaces where heavy machinery cannot be used ■ Quiet and environmentally considerate ■ Capable of handling high elevations ■ Able to manage heavy loads *For more details, please refer to the PDF document or feel free to contact us.

• Other safety equipment

"ECOPOLE" is a dust-proof and wind-proof net fence that shuts out dust through a combination of high-performance dust-proof nets and high-strength steel pipe poles. The high-density net significantly reduces airborne dust. The smart poles securely support the net with steel pipe poles. It contributes to space-saving and economical dust control measures. 【Features】 ■ Significantly reduces dust with high-density net ■ Steel pipe poles securely support the net ■ Space-saving and economical ■ Exhibits excellent durability *For more details, please request materials or view the PDF data available for download.

• Steel

The "Metal Road Construction Method" is a three-dimensional frame prefabricated bridge where the piles, cross beams, and main beams are rigidly connected at the grid points. It is mainly suitable for road construction on steep slopes in mountainous areas. We apply the appropriate structural type according to the terrain and construction conditions. We offer various types, including the "Widening Type," "Mountain Side Cantilever Type," and "Independent Type." 【Features】 ■ Excellent seismic resistance ■ Easy transportation and installation of components ■ Short on-site construction period ■ Widening possible while ensuring existing traffic ■ Consideration for the natural environment ■ Abundant track record *For more details, please refer to the PDF materials or feel free to contact us.

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Grid metal is a product that reinforces deteriorated RC structures by integrating with polymer cement mortar. By processing steel plates into a lattice shape, it allows for a thinner reinforcement layer, making on-site work more efficient. It is used for reinforcing the underside and topside of bridge RC slabs, repairing and reinforcing deteriorated box culverts, and reinforcing RC beams. By reducing the thickness of repairs, it enables a reduction in repair loads and ensures the maintenance of internal space. Features of the grid metal method: - It can be processed in the factory to match the shapes of tunnels and box culverts, thus streamlining on-site construction. - Since the vertical and horizontal bars are on the same plane, the reinforcement cross-section can be made thinner, minimizing the increase in dead load and favorably securing internal space. - By applying corrosion protection treatments such as hot-dip galvanizing and epoxy resin coating, it excels in corrosion resistance and contributes to the longevity of structures. For more details, please request materials or view the PDF data available for download.

• Steel

The "J-UP Brace" demonstrates excellent performance as a seismic damper installed between the upper and lower structures of a bridge (piers and abutments). It exhibits stable restoring force even in high strain areas (maximum shear strain amplitude of 4%) and has outstanding low-cycle fatigue performance, accommodating the large expansion and contraction required for bridge seismic dampers (80 to 120 mm). When installed on movable bearings, the damper does not act under normal conditions or during Level 1 earthquakes due to the equipped sliding mechanism, but it provides sufficient effectiveness as a seismic damper during Level 2 earthquakes. 【Features】 ■ Shows stable restoring force characteristics even in high strain areas ■ Excellent low-cycle fatigue performance ■ Accommodates large expansion and contraction required for bridge seismic dampers ■ Hysteretic damper utilizing the elastic-plastic deformation of steel ■ Exhibits stable energy absorption capability with minimal influence from temperature and speed *For more details, please refer to the PDF document or feel free to contact us.

• Anti-vibration, earthquake-proof, vibration-isolating devices

【NETIS Registration Number KT-150090-VR】 "Paint Guard CV" is a construction method that enhances the original corrosion prevention function by incorporating fibers into the paint, adding a concrete spalling prevention feature. This method, developed specifically for deterioration suppression and spalling prevention, can be implemented at a lower cost compared to other methods for aging RC structures. Its excellent workability allows for speedy construction with fewer work processes compared to conventional methods. 【Features】 ■ Suppression of harmful substances such as moisture and salt intrusion ■ Elasticity to accommodate concrete cracking ■ Low-cost method ■ Short construction period ■ Strong resistance to harsh environments *For more details, please refer to the PDF materials or feel free to contact us.

• paint
• Repair Agent

"Repair Star☆NF (for civil engineering)" is a premixed type of sectional repair mortar that can be used by adding a specified amount of water and mixing it during use. It excels in workability, durability, and fire resistance, and demonstrates its performance when used in a wide range of fields, including repair and reinforcement work for bridges and tunnels, seismic reinforcement work in civil engineering and construction, and repair work for marine structures (electrolytic corrosion prevention). Additionally, we offer "Repair Star☆NP" for construction use and "Repair Star☆G" for injection. 【Features】 <Repair Star☆N> ■ Can be applied using either plastering methods or wet spraying methods ■ Excellent salt resistance, suitable for repair of marine structures and measures against salt damage deterioration ■ Superior resistance to carbonation, freeze-thaw damage, and fire ■ Due to its inorganic material composition, it has physical properties close to concrete ■ Excellent adhesion performance, high strength, and crack resistance *For more details, please refer to the PDF document or feel free to contact us.

• paint
• Repair Agent
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"ECOPOLE" is a dust-proof and wind-proof net fence that shuts out dust through a combination of high-performance dust-proof nets and high-strength steel pipe poles. The high-density net significantly reduces flying dust. The smart poles securely support the net with steel pipe poles. It contributes to space-saving and economical dust control measures. 【Features】 ■ Significantly reduces dust with high-density net ■ Steel pipe poles securely support the net ■ Space-saving and economical ■ Exhibits excellent durability *For more details, please request materials or view the PDF data from the download section.

• Steel

JFE Civil's "Ball Protection Net Poles" are designed to meet your needs, from design to factory production and construction. Our high-strength and smart steel pipe poles create a safe and comfortable space. We offer a lineup that includes the "Nice Pole" for golf practice ranges, "Campus Poles" for baseball and soccer fields, and "Safety Poles" for ball protection. 【Contents of the Comprehensive Catalog】 ■ Steel pipe support "Nice Pole" for golf practice ranges ■ "Campus Pole" for baseball and soccer fields ■ Ball protection shelter and flying ball protection work "Safety Pole" ■ Dust and windproof net fence "ECOPOLE" ■ Lighting pole "Terasu Pole" ■ Fast support for pole construction "Nice Joint Method" *For more details, please refer to the PDF document or feel free to contact us.

• Other safety and hygiene products

"Naispole" is a steel pipe support for golf practice ranges that features tall, widely spaced smart poles to create a comfortable space. Additionally, it is possible to renovate or expand existing protective nets. We can carry out net heightening work in a short period if balls are flying over. We respond to diverse customer needs with a rich variety of design options. 【Features】 ■ Tall, widely spaced smart poles ■ Creates a comfortable space ■ Renovation and expansion of existing protective nets are also possible *For more details, please refer to the PDF materials or feel free to contact us.

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"Campus Pole ME" is a high-intensity, smart steel pipe pole-type protective net fence that creates a safe and comfortable baseball field. It accommodates heights of 20 to 50 meters and reliably prevents balls from flying out. It demonstrates excellent durability with a post spacing of 10 to 20 meters. The net lifting mechanism also allows for easy maintenance. 【Features】 ■ Reliably prevents balls from flying out ■ Exhibits excellent economy and durability ■ Easy maintenance of the net *For more details, please refer to the PDF document or feel free to contact us.

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The "Safety Pole" is a ball protection shelter where high-strength steel pipes or H-shaped steel poles exert their power under a sturdy shelter that covers the overhead area. Additionally, by using fine mesh nets or plate materials, it can also be utilized for dust prevention measures. 【Features】 ■ Sturdy shelter covering the overhead area ■ High-strength steel pipe poles exerting power ■ Usable for dust prevention measures as well *For more details, please refer to the PDF document or feel free to contact us.

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"Terra Pole" is a simple and slim lighting pole handled by JFE Civil. By using hot-dip galvanized finish and weather-resistant steel materials, maintenance through repainting as in the past is unnecessary. The high-strength and smart steel pipe pole enhances night games. 【Features of the Net Pole】 ■ Economically creates an open space ■ Can operate during construction ■ No maintenance required for painting ■ Choose joint types according to installation location ■ Matches the surrounding environment *For more details, please refer to the PDF document or feel free to contact us.

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"RS Shot HB" is a high-density mortar material designed with a unique formulation of multiple materials, including iron powder, which excels in wear resistance. By using a construction system suitable for the site conditions to apply it in the designated areas, it enhances strength and protects structures from heavy wear and impact. We offer construction systems suitable for large areas, such as the "JECOMO Method," and a "Dry Spray Method" that allows for long-distance pumping. [Features] - Enhances strength and protects structures from heavy wear and impact - Construction systems that accommodate various site conditions - Wear resistance: approximately 5 times that of ordinary concrete - Impact resistance: approximately 6 times that of ordinary concrete *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Repair Agent
• others