PRESTRESSING TENDON LAYOUTS FOR PRESTRESSED STEEL COMPOSITE GIRDER

摘要

The present invention relates to the arrangement structure of the PC strand of the prestressed steel composite girder (Prestressed Steel Composite Girder), in the steel composite girders formed by pouring concrete to surround a portion of the steel and the steel, at one end of the girder A first PC strand that is fixed to a live anchorage and fixed to a dead anchorage at a position spaced a predetermined distance from the other end of the girder; The other end of the girder is fixed to the movable anchorage, and the position is separated from the one end of the girder comprising a second PC strands fixed by the fixed anchorage, the cross-sectional area of the PC strands disposed on both ends of the composite girder Since the tensile stress is arranged smaller than the central portion of the composite girder where the greatest acting force is applied, it is possible to stably introduce a large compressive stress that cancels the maximum tensile stress generated at the central portion of the composite girder during future use. Provided is the arrangement structure of the PC strand of the prestressed composite girder that can prevent the concrete from being destroyed by the compression stress is exceeded during common at both ends of the composite girder.;Concrete weight, steel girder, compressive stress, fracture, PC strand