BEARING STRESS DISPERSION MEMBER, TENSION ANCHORAGE DEVICE, AND PRESTRESSED CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a compact bearing stress dispersion member for a tension anchorage device which is attached to each end of a prestressing steel (PC steel) of prestressed concrete. SOLUTION: According to the structure of the bearing stress dispersion member 10, a metallic grid plate 10a formed like a square flat plate has a circular guide insertion hole 10b formed at the center thereof, and 16 ribs 10c protrude from a peripheral area of the metallic grid plate 10a, followed by boring therein eight through holes 10d. In this manner the bearing stress dispersion member 10 has a simple structure and therefore its production is facilitated. Further by virtue of its compact shape, its storage fees and transportation costs are drastically reduced. Furthermore the bearing stress dispersion member 10 is increased in surface area due to formation of the ribs 10c, and therefore its bearing stress dispersion function is increased. COPYRIGHT: (C)2005,JPO&NCIPI