STEEL SLIT DAM, AND CONSTRUCTION METHOD AND REPAIRING METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a steel slit dam that can reduce a bending moment applied to posts in the case of supplying boulder or the like while exhibiting a function of preventing the generation of temperature stress by absorbing the expansion of concrete and a steel material caused through a temperature change.

SOLUTION: The steel slit dam includes the posts 11 erected between concrete dam bodies 5 constructed with a space in the width direction of a river; sheath pipes 19 embedded in the dam bodies 5; and cross beams 15 laid between the dam bodies 5, with the ends inserted in the sheath pipes 19, and connected to the posts 11. Space holding members 21 retractably interposed from the opening 19a of the sheath pipe 19 are provided in a clearance 20 between the downstream outer peripheral surface 15b of the cross beam 15 and the downstream inner peripheral surface 19b of the sheath pipe 19.

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