| 摘要 |
PROBLEM TO BE SOLVED: To restrain horizontal reaction from being imparted to a lower structure by preventing stormwater from invading the surface contacted by a bearing in a sliding condition and moving the bearing easily with the released support of a fixed load of the roof structure during the construction of the roof structure. SOLUTION: Slide members 5 and 6 are respectively fixed to the lower structure 1 and the bearing 3a in order to be made to contact them in the sliding condition. An oil sump groove 7 capable of sufficiently storing oil 8 such as grease, etc., is formed in the surface contacted in the sliding condition and positioned on the lower side of each of the slide members 5 and 6 so as to prevent the surface contacted in the sliding condition from being frozen due to the invasion by stormwater. The movement of the bearing 3a with the released support of the fixed load of the roof structure 2 prevents an outflow of the oil 8 from the surface contacted by the bearing 3 in the sliding condition. Consequently, the support 3a is easily moved for the horizontal reaction not to be imparted to the lower structure 1.
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