Intergral joint method of segment prestressed concrete girder

摘要

The present invention provides an integral bonding method of a segmented PS concrete girder, which allows uniform bonding pressure on the bonding surface to be formed through bonding between segmented girders using a bonding tension material to prevent some concrete from falling out or cracking at the bonding portion. . In the integral joining method of a segmented PS concrete girder according to a suitable embodiment of the present invention, a steel plate for segmentation is installed in a formwork at a right angle to the longitudinal direction of the segmental girder at each segment position where the end segmental girder and one or more intermediate segmental girder are to be manufactured. The step of placing and placing; Selecting a plurality of locations symmetrically positioned vertically and horizontally on both sides of the steel plate for segmentation, respectively, and temporarily fastening the sheath tube socket and the socket plug on the same axis; In each segment section, between the socket plug of the sheath tube and the socket plug facing each other, between the fixing device on the starting end and the socket of the sheath tube, and between the socket plug and the fixing device on the end side, respectively, connecting the sheath tube for bonding tension material. Wow; After curing the concrete by pouring the formwork, performing demolding and separating the steel plate for segmentation to produce an end segmented girder and a plurality of intermediate segmented girder to be disposed therebetween; After transporting the end segment girder and the plurality of intermediate segment girder to the site, and after applying epoxy to each joint surface of the end segment girder and the plurality of intermediate segment girder, between the end segment girder through the fitting of the sheath pipe socket and the socket plug The step of arranging the middle segmented girder in the longitudinal direction; The joining tension member is inserted through the joint tension member sheath pipe embedded in the end segment girder and the middle segment girder, respectively, and the joining tension material is tensioned and fixed in the fixing device; characterized in that it is joined, including.