Precast Prestressed Concrete Slab Using Unbonded Strand Area And Cutting Pocket And the Manufacturing Method Therefor

摘要

The present invention is to form a cutting pocket so that the PS steel wire is exposed on the precast slab to cut the PS steel wire from the cutting pocket to the cutter, so that the upper PS steel wire forms a non-attaching region in the positive moment section, and the lower PS steel wire is the parent It relates to a non-attachment section to form a non-attachment section of the PS steel wire in the comment section, and a pretension continuous precast slab using a cutting pocket and a method of manufacturing the same. One embodiment of a pre-tension precast slab of a pretension method utilizing the non-attachment section and the cutting pocket of the present invention includes a precast slab installed on the top of the girder; An upper PS steel wire disposed on the inside of the precast slab so as to resist the sectional force of the parent cement and configured to introduce a pretension type tension force; An upper cutting pocket formed to expose the upper PS steel wire by forming a non-attaching region at a position secured by the transmission length toward the forward moment section after the moment of inflection of the upper PS steel wire; A lower PS steel wire disposed under the precast slab so as to resist the sectional force of the positive moment and configured to introduce a pretension type tension force; A lower cutting pocket formed to expose the lower PS steel wire at a position where the lower PS steel wire passes the moment of inflection and secures the transmission length toward the parent moment section, and exposes the lower PS steel wire; Consisting of, it is configured to cut the PS steel wire exposed from the upper and lower cutting pockets so that each design tension force can be introduced to a desired position inside the precast slab.