"SpS method," a joining technique that does not use welding for existing circular steel pipes.
The SpS (SPS) method is a joint construction technique that installs seismic reinforcement members onto existing circular steel pipes (such as columns and truss beams) without welding. It consists of a "reinforcement member joint (non-bonded area)" where the seismic reinforcement member is attached, and "shear resistance areas (bonded areas)" installed on both sides of the reinforcement member joint. These components are attached using specialized half-cylindrical hardware that clamps around the existing circular steel pipe. The stresses generated at the joint are transmitted to the existing circular steel pipe through the shear force at the bonded area, the axial force (tensile and compressive forces) at the reinforcement member joint, and the bending moment at both the reinforcement member joint and the shear resistance area. **Features** - No need for fire protection measures as welding is not used. - No need to drill bolt holes into the existing circular steel pipe. - Construction can be carried out while leaving any irregularities from the existing circular steel pipe. - By separating the bonded and non-bonded areas to distribute stress, it prevents a decrease in adhesive strength due to peeling. *For more details, please contact us or download the catalog to view.*
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basic information
Applicable existing steel pipes are standalone steel pipes with diameters ranging from 48.6 to 318.5, or assembled materials using steel pipes. There are no restrictions on the new components to be attached, and there are "steel frame type" designed for new installations like steel frames, and "brace type" designed for new installations like horizontal braces. *For details, please contact us or download the catalog to view.
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Our company has consistently engaged in the investigation and diagnosis of reinforced concrete buildings, as well as renovation work, and from seismic diagnosis to seismic reinforcement work for many years. In recent years, we have been working as a specialized company focused on various issues such as the maintenance and preservation of various buildings and structures, improving seismic performance, environmental measures, energy conservation, and resource conservation. We will continue to respond swiftly to the diversified needs related to the safety and security of society and contribute to the creation of a "happy environment" in society.