Obtained construction technology examination certification" Non-welded brace reinforcement "Smart Attach Method
The Smart Attach method is a non-welding, short-term bracing reinforcement method that replaces traditional seismic reinforcement.
★Acquisition of Construction Technology Examination Certification★ On December 2, 2019, we obtained the "Construction Technology Examination Certification (Building Technology)" from the Japan Architecture Center (BCJ - Examination Certification - 259). The Smart Attach Method is a non-welded joint method for brace reinforcement ends in seismic retrofitting of steel structures. It uses uniquely shaped SA hardware, SA plates, and high-strength bolts to connect to existing structures (H-shaped cross-section columns and beams). Feature 1: No on-site welding required Reduces fire risk. Minimizes fire protection measures. Feature 2: Construction can be done while occupied Simplifies construction through bolt connections. Can be installed without the need for large scaffolding, allowing brace reinforcement work to be carried out while the building is in use. Feature 3: No need to drill bolt holes in the flange Since drilling bolt holes in the flange is unnecessary, there is no cross-section loss in the flange, resulting in minimal reduction in the cross-sectional performance of H-shaped materials. Feature 4: Reduction in work hours and shortening of construction period Contributes to reducing work hours and shortening the construction period through reduced fire protection measures due to non-welding, minimized changes in manufacturing lines and equipment, and enabling construction while occupied.
basic information
<Smart Attach Method Specifications> Target Area: Reinforcement of braces for steel frame columns and beams Existing Steel Column/Beam Shape: H-shaped cross-section material (rolled, welded assembly) Applicable Column/Beam Flange Width: 124-305 mm Applicable Column/Beam Height: 1200 mm or less Web Width to Thickness Ratio: 71 or less Brace Material Angle: 20-70 degrees <Materials Used> SA Hardware: 3 types, cast steel products (equivalent to JIS G 5102/ SCW480) SA Plate: 490 Newton class steel material High-Strength Bolts: Torus-type high-strength bolts (S10T) or high-strength hex bolts for friction joints (F10T) - Detailed examination will be conducted by our company. The quantity of SA hardware and bolt diameter will be determined based on the required load capacity at the brace connection. - This method corresponds to the connection method between H-shaped cross-section materials and brace materials in brace reinforcement methods. - The cross-section examination of brace materials (including gusset plates) and the seismic reinforcement design of buildings using braces fall within the scope of the seismic reinforcement designer's considerations. *This will not be implemented by Senkushia.
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Applications/Examples of results
Purpose: Seismic reinforcement for steel structures Achievements: Senkushia Co., Ltd. Kanto Manufacturing Plant (in-house factory) and others
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News about this product（3）
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Refinement of the column base reinforcement method "Smart Fit Method"! / Welding-free work is now possible when the existing structure is an H-beam.
Senkushia Co., Ltd. (Headquarters: Minato-ku, Tokyo, Representative Executive Officer: Nobuyasu Kasahara), which manufactures and sells construction materials and related works, has refined the "Smart Fit Method" for reinforcing the base of steel columns. In seismic reinforcement work for steel structures, it is common to attach reinforcement members to the building using welding. However, welding methods require considerable time and effort for work and fire protection, and they also carry the risk of fire during construction. Therefore, there is a demand for safe, reliable, and simple joining methods that do not use fire. In the previous Smart Fit Method, welding was necessary when installing reinforcement columns, but with this refinement, it has become possible to perform work without welding when the existing column is an H-beam. Additionally, the improvement of the toughness index (F value) of the column base has been achieved.
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Launch of the "Smart Chronos® Method," a weld-free brace joint construction method that replaces conventional seismic reinforcement.
Senkushia Co., Ltd. (Headquarters: Minato-ku, Tokyo, Representative Executive Officer: Nobutaka Kasahara), which manufactures and sells building materials and related construction, has begun selling the "Smart Chronos Method," a brace joint method that replaces traditional welded seismic reinforcement with a no-welding, short-construction-time approach. In seismic reinforcement work for steel-framed buildings, it is common to use welding methods when attaching reinforcement materials to the structure. However, welding methods require significant time and effort for work and fire prevention measures, and they pose a fire risk during construction. Therefore, there is a demand for safe, reliable, and simple joining methods that do not use fire. In response to these challenges, our company has developed the "Smart Attach Method" (brace reinforcement) with the concepts of "no welding" and "improved construction efficiency," which has been well received in seismic reinforcement for factories and warehouses. We have now applied this technology to develop the "Smart Chronos Method," which allows for the installation of brace materials using dedicated SC hardware and bolts.
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We have obtained the construction technology examination certification for the "Smart Attach Method," a welding-free brace reinforcement method that replaces conventional seismic reinforcement.
Senkushia Co., Ltd. has obtained the construction technology examination certification for the non-welded brace reinforcement method "Smart Attach Method" from the Japan Architecture Center, a general incorporated foundation. Moving forward, we aim to further expand our product offerings for the steel frame seismic reinforcement system, targeting sales of 1.2 billion yen for the entire system in the fiscal year 2022. ■ Acquisition of Construction Technology Examination Certification We obtained the "Construction Technology Examination Certification (Architectural Technology)" from the Japan Architecture Center, a general incorporated foundation, on December 2, 2019. (BCJ - Examination Certification - 259) For more details, please refer to the attached release document.
