Yamanashi Prefecture Construction Example: Reinforcement Method for Existing Rockfall Protection Fences - No On-Site Processing Work Required!
All materials used are factory-made! This is a construction method that does not require processing work on-site.
Here is a case study of the "Stronger Method" implemented in Yamanashi Prefecture. As a result of the construction, the fence height increased from 2.0m to 3.0m, with a construction length of L = 60.0m. This method does not require the use of small heavy machinery, eliminating the need for tree cutting in the surrounding area. Additionally, there is no need for excavation of the slope or the use of concrete during construction, allowing for the reuse of existing structures. [Case Study] ■ Raised type (Fence height: H = 2.0 → 3.0m, Construction length: L = 60.0m) ■ Yamanashi Prefecture (Construction: Fiscal Year 2018) *For more details, please refer to the PDF document or feel free to contact us.
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【Method Features】 <Performance Aspect> ■ The upper and lower reinforcement brackets restrain the twisting of the posts and prevent buckling at the base of the posts. ■ By connecting the top of the posts with steel rods, the loads that were previously supported by a single span in conventional methods are distributed across multiple spans. ■ The use of a high-strength wire mesh made from three uniquely developed steel wires prevents penetration of the mesh. ■ The energy absorption performance, which was limited to about 50KJ in conventional products, has been improved to approximately 120KJ. ■ In areas where the height of the fence is a concern, height-raising components are used to increase the fence height. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Until now, we have been cutting down trees on the slopes, excavating the ground to install concrete foundations, and then placing avalanche prevention shelves and rockfall protection shelves on top. However, the avalanche prevention shelves are ineffective against rockfalls, and the rockfall protection shelves are powerless against avalanches. The "triangular fence" developed and sold by our company effectively functions against both avalanches and rockfalls, and it does not require any excavation of the ground or concrete work, which could cause secondary disasters. It can be easily constructed using only lightweight materials, making it an environmentally friendly construction method suitable for the 21st century that does not compromise the landscape.