Fixed by friction fixed to the end of the strut for the steel pipe being configured to be connected to each other by a flange connection discloses a strut and strut strut construction method used for pipe joints for interconnecting the plurality of steel pipes and this strut.
Strut joints for steel pipes according to an embodiment of the present invention comprises first and second fixed friction member configured to surround the outer periphery of the pipe ends together, the extensions being bent at both end portions in the circumferential direction of the first and second fixed friction member first and second friction fixing fasteners consisting of 1, 2 comprises pyeonreul, and such that said first fixed contact to the first and second friction member fixed to the pipe end by a second fastening piece on the friction formed by the fastening member; And the first and second connecting flanges are configured to be connected to a wall supporting device which is supported on the first and second frictional fixing of the one end and each forming, pipe joints for steel pipes other strut fixed to the other end or one side of the earth retaining wall in first and second flange member or the flange member 3, 4 has multiple projections or polygonal groove is formed, the polygonal projection to match the connection position and including, respectively, formed at one end of the first and second connecting flanges; or polygonal, the first and second flange member or the wife combination corresponding polygonal groove formed in the flange member 3, 4 which are respectively formed at one end of the first and second connecting flanges of the other side opposite to the first and second connecting flanges or being adapted to be connected to a polygonal projections, to support the shear force exerted on the connecting portion of the pipe in different directions, the polygonal projection is the entire inner peripheral surface of the first and second flange member or the third and fourth flange members of the one side surround is formed into a shape protruding, the polygonal grooves may be formed in the form intergranular enclosing the entire inner peripheral surface of the first and second flange member or the third and fourth flange members of the other side.
Present invention by the above configuration is connected to the end portion of the steel pipe for strut by friction fixing being connected to each other by a flange connection and a plurality of steel pipes can be connected to each other, the absence of bolts or the like used for the flange connection, even breaking the steel pipe can not be drastically modified by the friction and fixing, even if the absence of bolts or the like used for fixing the friction may rupture so that the level of the steel pipe held by the flange connection.