METHOD OF TRANSFERRING AND LAYING PRECAST CONCRETE STRUCTURE WHILE CHANGING TRANSFER DIRECTION

PROBLEM TO BE SOLVED: To provide a laying method capable of easily changing the direction of a precast concrete structure to be transferred into an arbitrary direction requested at a bend point part even when a transfer path to a laying position has a bend point part at the right angle or the like or when it is difficult to install a turntable or the like.SOLUTION: The transfer path includes a first rail unit RU1 and a separate second rail unit RU2 comprising two or more recessed groove rails R2 provided together. A box culvert 1 (precast concrete structure) is transferred through the first rail unit RU1 and stopped and lifted at a crossing position CS1 with the second rail unit RU2, a carrying plate 3 is installed to the recessed groove rails R2 constituting the second rail unit RU2 under the box culvert 1, and the box culvert 1 is lowered, mounted on the carrying plate 3 and transferred through the second rail unit. The posture of the box culvert 1 during transfer in the first and second rail units RU1,RU2 is maintained in the same state.