| 摘要 |
An expansion joint device having a rubber plate protective member is provided to fix upper plates more stably and to resist external force such as earthquake or wind and a variation of temperature by improving the structure of finger type upper plates to be movable vertically and horizontally, and to prevent the deterioration of a rubber plate member and to extend the service life of a rubber plate member by protecting a rubber plate member using a rubber plate protective member. An expansion joint device contains finger type upper plates(310a,310b) installed to both ends of the split floor slab of a bridge or an overhead road to engage with each other, lower plates(320a,320b) installed on the lower parts of the upper plates and provided with a key having projections to cut off the inflow of rainwater and to disperse load and a horizontal plane to support the upper plates, bolts(331) fixing the upper plates to the lower plates, anchor bolts(340) fixing the lower plates to post-placed concrete(360) and installed vertically or slantingly on the lower part of the horizontal planes of the lower plates to be adjustable in height according to site conditions; a rubber plate member(350) installed on the horizontal planes of the lower plates to remove rainwater and impurities flew in a gap of a finger of the upper plates, and a rubber plate protective member(355) installed closely to the top of the rubber plate member to protect the rubber plate member from ultraviolet rays and grease from vehicles. |
