| In this paper、 a rockfall protection wall method is newly proposed in which the wall is jointed to steel-pile foundation with H-section steel embedded in the wall and requiring no excavation of the slope. The wall is attached to a two-layered absorbing system to decrease the impact force due to falling rocks. The absorbing system is composed of Expanded Poly-Styrol (EPS) block and reinforced concrete (RC) panel. The applicability of the system is confirmed by conducting full-scale impact test. From this experiment、 the following results are obtained: 1) the absorbing system can effectively absorb the impact force; and 2) the protection wall without the absorbing system is severely damaged while subjected to impact input energy of Ek = 62.5 kJ、 but the wall with the system has no crack due to impact energy twice as much of above input energy. |
