Clip type pre-stress anchor cable active clip feeding and tension locking device and use method

Abstract

The invention discloses a clip type pre-stress anchor cable active clip feeding and tension locking device and a use method. The clip type pre-stress anchor cable active clip feeding and tension locking device comprises a steel strand, a working anchor, a clip, an anchor matching plate, a tool anchor, a tool anchor clip and a jack, and is characterized in that the jack is a composite center hole jack, one end of the composite center hole jack is provided with a tension jack, and the other end of the composite center hole jack is used for locking a clip feeding and locking jack of the steel strand. The use method of the clip type pre-stress anchor cable active clip feeding and tension locking device includes the steps that after the tensioning force reaches a designed value and is stable, a clip feeding piston of the clip feeding and locking jack pushes the anchor matching plate, the anchor matching plate pushes the working anchor clip to move into a conical wedge hole of the working anchor, and therefore a steel strand bundle is actively wedged and locked. The clip type pre-stress anchor cable active clip feeding and tension locking device and the use method have the advantages that the clip feeding and locking jack pushes the corresponding anchor matching plate so as to enable the clip to move towards the wedge hole of the working anchor, the working anchor clip is wedged into the wedge hole of the working anchor while thrust of the clip feeding and locking jack increases, and therefore the steel strand bundle is clamped tightly; in this way, the steel strand can not be drawn back, the loss value of pre-stress does not need to be estimated, operation is more accurate, and errors are smaller.

Description

technical field [0001] This patent relates to a clip-type prestressed anchor cable active clamping and tensioning locking device and its use method. It belongs to the field of civil engineering construction and has extensive applications in geological disaster management, deep foundation pit support, prestressed components and bridges, etc. application. Background technique [0002] At present, the traditional clip-type anchor (as shown in Figure 1) uses the wedge-tight principle of the tapered hole to anchor the steel strand, that is, the wedge-shaped clip anchors the steel strand in the tapered hole of the anchor plate. The jack tensions the steel strands, and the locking piece moves toward the limit plate under the action of the steel strands, and the movement is limited by the limit of the limit plate; according to the requirements of different industry specifications, the design stress value exceeds a certain range Finally, the jack is slowly released, and the clip of ...

AI Technical Summary

Problems solved by technology

[0007] The invention makes up for the defect in the prior art that the anchor clips are passively wedged by the retraction of the steel strands and causes the stress loss of the anchor cables, and provides a clip-type prestressed anchor cable active clamping and tensioning locking device and its use. method

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