| 摘要 |
The present invention relates to a tension-indicating earth anchor for ground reinforcement, which leaves a mark indicating the level of tension introduced to an anchor body to enable the tension introduced state to be permanently recognizable. A soft plate and a hard plate are additionally inserted in between a compressing plate and a hydraulic jack to form an engraved mark on the soft plate as if making a flower mark on a rice cake by pressing the rice cake. The mark changes according to the tension, and its value is read in gradations. A conventional anchor for ground reinforcement has a weak point that a technician must watch a pressure gauge of a hydraulic jack to control the whole process for a long time in the site in introduction of tension. When the control and supervision system is poor in a site such as a small-scale site, the tensioning process may be carelessly handled to reduce work time. Therefore, the tension device of the present invention lets the introduced tension be permanently kept in an anchor body for the design tension to be properly introduced; allows the tension introduced state to be visually recognizable at once after construction; prevents a technician from wasting time; and makes it easier to perform additional tensioning since one can immediately learn the default tension value in the site in case additional tensioning is required. |
