Yamadome structure and Yamadome construction method

摘要

PROBLEM TO BE SOLVED: To provide an efficient and inexpensive mountain retaining structure when the groundwater level is lower than the planned excavation depth. A plurality of main piles 3 are arranged at predetermined intervals so as to partition the ground side and the excavation side of the ground. Instead of the usual wooden or steel horizontal sheet pile, a cloth material 4 such as a civil engineering sheet, canvas, or carbon fiber cloth is used. The cloth material 4 is stretched in a strip shape between the adjacent main piles 3 and 3, and is fixed to the surface of the main pile 3 on the excavation side by the cloth material fixing tool 20. The cloth material 4 has a thick portion formed by making a part of the cloth material 4 thicker than the other parts, and the cloth material fixing tool 20 is engaged in the stretching direction with respect to the thick part of the cloth material 4. It fits. [Selection diagram] Fig. 2