| 摘要 |
A fixed support structure comprising a pair of support units each including a housing and a ball stud having a ball portion placed in the housing and a threaded shank portion, which are formed integrally with the ball portion, the ball stud shank portions extending downward for the respective housings, the housings fixed to an upper structure such as a bridge girder directly or indirectly in spaced relation, and the ball stud shank portions threadedly fixed to a retainer fixed on a base plate fixed to a lower structure such as a bridge base. |
