| 摘要 |
PURPOSE:To obtain an underground wall whose concrete is well adhered to master pile by a method in which chain materials are charged into the space in the surrounding of a master pile driven into a pit, and while the chain materials are pulled up, the ground between it and the master pile is excavated and soil on the surface of the master pile is removed by vertically moving the chain material. CONSTITUTION:In constructing a continuous underground wall, master piles 1 are driven into pits 3 excavated at a given interval, and chains 2 are charged into the surrounding of the piles 1. A solidifying agent 4 is then packed into the space between a flange 11 and the pit wall 4, the ground between the piles 1 is excavated by a bucket 7, etc., to form a trench 8. The chains 2 are pulled up as the excavation proceeds to avoid obstruction to the excavation. After the ending of the excavation between the piles 1, concrete is placed into the trench 8 to construct an underground wall. Soil adhered to the surfaces of the piles 1 is removed by vertically moving the chains 2 in order to improve the adhesion between the concrete and the piles 1.
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