PURPOSE: To prevent the inclination, etc. of a housing or its fence by a method in which a fan-shaped sheathing plate is provided at the back of the side-strut of a sheathing structure, and the sheathing plate is inclined or pushed into a trench according to a slope at which the soil and sand of the trench bottom flow during further excavation period and the depth of the excavated trench.
CONSTITUTION: Struts 4 connected by a support jack 3 with a guide groove 2 are erected in a trench 1', and one side end of a sheathing plate 5 is fitted into the guide groove 2 of one side of the struts 4 facing each other. And, the guide groove 2 of the other side of the next struts 4 facing each other is fitted with the other end side of the sheathing plate 5 to fabricate a sheathing structure 6. Then, a fan-shaped sheathing plate 8 is provided at the back of the struts 4 facing each other on the side part of the sheathing structure 6. While excavating the trench 1', the sheathing plate 5 and the struts 4 are pushed down by a back hoe and while pushing down the sheathing plate 8 by the back hoe, is inclined along the slope of the bottom of the trench 1' in order to prevent the flow of soil and sand on the outside of the sheathing plate into the side part of the sheathing structure 6.
| JP2009197503 | SUPPORT MATERIAL FOR SHEET PILE |
ENMEI YOSHIO
MORITA AKIHIRO
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