A answer force sensor work anchor under anchor in advance for stretch -draw operation

The utility model discloses an answer force sensor work anchor under anchor in advance for stretch -draw operation belongs to bridge prestressing force stretch -draw technical field. It includes the anchor body, the internal wheatstone bridge formula forced induction circuit that is used for responding to anchor body axial pressure that is equipped with of anchor, and the side of the anchor body is equipped with the signal output interface that is used for connecting the changer, the output and the signal output interface connection of forced induction circuit. The utility model discloses canchange among the prior art obtaining method to prestressing force under the anchor, under can the direct readout anchor accurate reading of prestressing force, the mode of the calculation of having avoided adopting among the prior art has simple, direct, convenient advantage, can provide more reliable reference data for bridge prestress construction. 本实用新型公开了一种用于张拉作业的锚下预应力感应工作锚，属于桥梁预应力张拉技术领域。其包括锚体，锚体内设有用于感应锚体轴向压力的惠斯通电桥式压力