RAILING PILLAR ESTABLISHMENT SYSTEM OF TIMBER TRESTLE BRIDGE

摘要

PURPOSE: A railing column installation system of a timber trestle bridge is provided to maintain the solidity of a railing for a long time using screw coupling units. CONSTITUTION: A railing column installation system of a timber trestle bridge comprises a female screw pipe(10), holes(103',104'), and a column coupler(20). The female screw pipe is fixed to the top surface of an H-beam(101). The holes are formed in an upper plate coupling board(103) and an upper plate(104) to be connected to the female screw pipe. The column coupler comprises a plate(21), a male screw rod(22), and an insertion pipe(23). The male screw rod is connected to the female screw pipe through the hole of the upper plate. The bottom end of a railing column(105) is inserted into the insertion pipe.