Cutting technology for installing seismic-resistant joints
The "NS Cutting Method" is a seismic retrofitting technique that installs seismic flexible joints (secondary products) at the connection points between existing pipes and rehabilitated pipes (composite pipes) and manholes, assuming Level 2 seismic motion. It is a method for enhancing the seismic resistance of existing pipes and rehabilitated pipes (composite pipes) against extraction, protrusion, and bending. This method can be implemented without regard to the construction procedures before and after pipe rehabilitation, minimizing traffic disruption in a compact work area, and allowing for safe and smooth construction through remote operation using a control panel installed on the ground. 【Scope of Application】 ■ Applicable Pipe Types - Reinforced concrete pipes, ceramic pipes - Rigid PVC pipes, rehabilitated pipes (composite pipes) ■ Applicable Pipe Diameter: 200 to 700 mm ■ Applicable Manholes - Oval: 900 × 600 mm - Inner Diameter: 900 to 1500 mm - Wall Thickness: 250 mm or less - Manhole Cover Rating: 600 or more *For more details, please download the PDF or feel free to contact us.
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【Construction Procedure】 ■1. Preliminary Confirmation ■2. Invert Destruction ■3. Cutter Blade Replacement ■4. Cutting Work ■5. Installation of Seismic Flexible Joints ■6. Finishing Work *For more details, please download the PDF or feel free to contact us.
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For more details, please download the PDF or feel free to contact us.
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The NS-R Construction Method Association aims to promote, develop, and improve the technology of the seismic reinforcement methods for sewer pipes, namely the "NS Cutting Method" and "Remake Ring," with the goal of minimizing damage during disasters and contributing to the creation of safe communities. We also hold training sessions to ensure that our members can carry out safe and efficient construction, so please feel free to contact us if you have any requests.