EARTHQUAKE-RESISTANT DEVICE OF BRIDGE

摘要

An earthquakeproof apparatus for a bridge is provided to improve the absorbing and dispersing performance of the horizontal and vertical behavior and reduce the damage of the bridge by absorbing the horizontal load at the LUD(Lock Up Device) and the E-shape steel damper, and dispersing the vertical behavior to the movable end bridge. An earthquakeproof apparatus(100) for a bridge comprises a pair of LUDs(Lock Up Device, 10); an LUD block(20) where the LUD is horizontally mounted at both opened installation spaces(27) with a predetermined interval and installed at the lower structure; an E-shape steel damper(30) whose center is mounted at the LUD and placed at the outer side of the LUD block to absorb the horizontal load with the LUD; a fixing plate(40) connecting both ends corresponded to the steel damper; a connection link(50) formed with a pin hole(53); and a bracket(60) whose one side is rotatably combined at the connection link through the medium of the pin hole and formed with a combining hole(66) corresponded to the pin hole, and other side is fixed to the upper structure. The LUD block contains a base plate(23), and an H-shape LUD installation rod(25) formed with the LUD installation space at both sides.