PURPOSE: To aim at facilitating the building work by forming a wall space between the center section of a channel shape frame and the ground a column space between adjacent curved parts, by laying a blocking die frame bridging between the front ends of the curved parts, and then by placing concrete while supporting side pressure with the use of rods and timbering.
CONSTITUTION: A plurality of channel shape die frames 1 each having a center part 11 and both curved end parts 12, 13 are laid being opened between the outer surfaces 12a, 13a of the curved parts, and a wall space 3 is formed between the center part 11 of each of the die frames 1 and the ground 2 while a column space 4 is formed between the adjacent curved parts 12, 13 of the adjacent die frames 1, and a die frame 5 for blocking the column space 4 is laid bridging between both curved parts 12, 13 forming the column space 4 while timbering 6 being laid on the outer surface thereof. Further, tension rods 15 are stretched between the timbering 6 and the ground 2, and concrete 17 is placed in both spaces 3, 4 while the side pressure of the concrete 17 are supported by the tension rods 15 and the timbering 6. With this arrangement, it is possible to reduce the strength of the curved parts of the die frames.
NAGAHAMA TAKESHI
KANAI TAKAO
