Method for constructing cylindrical tank

摘要

A method of constructing a cylindrical tank that has an inner tank made of metal and an outer tank made of concrete has a step of building a PC wall (3) by erecting lateral liners (4) sequentially from the bottommost layer to the topmost layer on an outer circumferential edge portion of a base plate, and pouring concrete (5) so as to follow the erecting of the lateral liners (4) with the lateral liners (4) being used as an inner side forming frame.

主权项

1. A method of constructing a cylindrical tank that has an inner tank made of metal and an outer tank made of concrete, the method comprising:
a step of building a sidewall of the outer tank by erecting outer tank lateral plates sequentially from a bottommost layer to a topmost layer on an outer circumferential edge portion of a bottom portion of the outer tank, and pouring concrete so as to follow the erecting of the outer tank lateral plates with the outer tank lateral plates being used as an inner side forming frame; and a step of alternating between performing (i) a butt-welding of a next one of the outer tank lateral plates onto a top of the outer tank lateral plate which has been erected and (ii) pouring of the concrete up to a height where the concrete covers a portion where the butt-welding has been performed, (i) the butt-welding and (ii) pouring of the concrete being performed sequentially and a plurality of times.