| 摘要 |
PURPOSE:To reduce frictional stress to be applied to an object being penetrated into the ground by flowing DC current between a suitable portion of steel parts whose periphery is bonded with bentonite electrically, which is penetrated into the ground, and electrodes set correspondingly to the steel parts in such a way as to vary the bonding strength of the bentonite. CONSTITUTION:In case where a structure 1 is inclined downwards to the right, a steel base material 2 on the left side is connected to the cathode of DC power source 4 and also an electrode plate 3 facing the base material 2 is connected to the anode of the power source 4. The base material 2 on the right side is connected to the anode of the power source 4, and the electrode plate 3 facing the base material 2 is connected to the cathode of the power source 4. When flowing a current between the base material 2 and the electrode plate 3 from each power source 4, bentonite particles adhered to the base material 2 on the left side are separated and at the same time water is attracted by the outer surface of the base material 2 to lessen the frictional force of the base material 2 under the ground. On the contrary, the bentonite is adhered to the base material 2 on the right side to increase the frictional force. |
