| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a road bridge expansion device with a steel-concrete composite structure that hardly receives noise resulting from an influence of passing vehicles, has a slip preventing function for passing vehicle, and hardly has a steel material corroded. <P>SOLUTION: There is provided a joint device for a bridge including joint hardware 3 constituted by horizontally arranging a flange 5 of a substantially L-sectioned steel material 7 including a web 6 and the flange united therewith, and embedding at least the flange in a high-strength fiber cement-based reinforcement layer 9 with a predetermined thickness in one body such that an upper surface of the high-strength fiber cement-based reinforcement layer 9 is a road surface. Joint hardware 3 with anchor material is constituted by fixing an anchor material 12 to the web 6 of the joint hardware 3, a pair of pieces of the joint hardware 3 with anchor material are arranged opposite each other at an interval along a road length, and a concrete layer 17 formed by charging and hardening concrete is formed on a back side of the joint hardware 3 with anchor material. <P>COPYRIGHT: (C)2013,JPO&INPIT |
