A but, self -modulation structure that is used for cast -in -place articulated seam of prefabricated plate -girder

The utility model discloses a but, self -modulation structure that is used for cast -in -place articulated seam of prefabricated plate -girder, including first steel sheet, the one end of first steel sheet install the one end of second steel sheet, the other end of second steel sheet the other end of third steel sheet is had through a spring coupling, the third steel sheet still connect into " X " type through self -modulation bolt and second steel sheet, second steel sheet and third steel sheet between rotate around the self -modulation bolt, the utility model discloses can bear the shear force, effectively solve and articulate seam and plate -girder disease, simple manufacture is under construction and changes the convenience moreover, and the transportation is convenient, the utility model discloses a self -modulation bolt can only unidirectional rotating, and the component rotates and keeps the component line type according to open the direction along the spring when bearing great variable action, improve