| 摘要 |
PURPOSE: A construction method for a beam is provided to install the beam, of which the height of section is changing, by pushing out method. CONSTITUTION: A construction method for beam comprises the steps of; forming numerous prominent part in an eaves rafter of a beam(4); processing a lower chord(6) in accordance with a curve of the eaves rafter; fastening the prominent part with the lower chord(6) directly or by a connection member(7) to form a bonded body of the beam(4) of which the eaves rafter forms a straight line; pushing out the bonded body of the beam(4) in the axial direction of a bridge from an abutment(2); and removing the lower chord(6) and the connection member(7) when the eaves rafter moves and then is placed in a designed location during being supported on piers(3).
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