| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cushioning joint for a concrete product having no risk of impairing a function of an elastic member, even if ai filling in an elastic member periphery is carried out, without reducing a cushioning effect due to pulling of concrete products. <P>SOLUTION: In pulling of the concrete products 2, 3 to be mutually connected, an end face of a protective body 13 is abutted on a bolt holding bracket 7, a coupling bolt 8 is rotated, while constraining relative rotation of a nut 12 and the protective body 13, in a state of abutting a nut 15 on a top wall 13A outer face, and its end is pressed against a recessed part 3A inner face of the concrete product 3, to pull together the concrete products 2, 3. At use, if the nut 15 is separated from the protective body 13 and tension acts between the concrete products 2, 3 due to an earthquake, or the like, the tension is cushioned, by compressing a belleville spring 10 by the nut 12 screwed on the joining bolt 8 and displacing them in an axial direction along the jointing bolt 8. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
