Abstract: A tension dispersion type complex anchor device includes an internal fixing body having a tension member which is placed through a free length section to apply a tension force and a fixing block to which a wedge assembly for grasping a distal end of the tension member is mounted; a connection medium unit for mounting the internal fixing body to one end thereof; a grip sleeve coupled to the other end of the connection medium unit; and a permanent anchor fixed by being fitted into the grip sleeve to provide an allowable anchoring force through a bonded length section.

Abstract: A wire tensioner includes a plurality of rods that apply a tensile force to a plurality of wires. A fluid pressure providing means applies fluid pressure to the plurality of rods to apply the tensile force to the plurality of wires. A fluid control means is connected to the fluid providing means and to the plurality of rods to separately control a fluid pressure applied to each of the plurality of rods.

Abstract: In an internal anchorage wedge assembly, a tension member is removed by the release of a wedge engagement corresponding to external anchoring of the tension member in imposing the anchoring load on the tension member anchored to an underground anchor hole. Moreover, in the internal anchorage wedge assembly, the tension member is more simply and efficiently removed without removing any other equipment, such as a drawbench.