A New Earth Reinforcement by "panel and Nail" for Slope Protection in Cold Region

Abstract

Newly developed earth reinforcement for slope protection was applied in cold region. The reinforcement by this method is making use of precast concrete panels with insulation and anchor nails. The precast concrete panel is economical, of high quality, durable for weathering, earthquake-resistant and of good appearance, which contribute shortening construction period and less life cycle cost. We can construct for nearly vertical slope by placing panels downward from top of slope at the same time of slope cutting, and for reinforcing of existing retaining wall by simply covering and nailing as well. Practical case of design and construction is explained, and measurement results of temperatures, forces at anchor head during cold season are shown to ensure the protection. Especially concrete panels are designed with insulation for low temperature, and the result of thermal analysis and field measurement shows the insulation works well to stop freezing front going into ground.