| 摘要 |
PROBLEM TO BE SOLVED: To enable reduction of term of works and cut-down of construction cost by boring a self-boring rod, and embedding the same to cope with collapse of ground and performing rust proofing for a tendon. SOLUTION: The self-boring rod 12 formed by a pipe-like hollow steel having a thread part on the peripheral surface thereof is driven in the ground 20 by boring using a drill bit 1 at the tip, and the inside and outside of the self-boring rod 12 are filled with grout material 22. Before the grout material 22 is cured, the tendon 4 having a resin-coated free length part on the head side, which is formed by at least one wire rod material, and a fixing part on the tip side is inserted in the inside extending from the head of the self-boring rod 2 to the tip, and the head of the tendon 4 is projected from the head of the self- boring rod 2 to cure and solidify the grout material 22. A fixing member is inserted from above a pressure receiving plate 21 installed on the ground 20 to the head of the tendon 4, thereby tensioning and holding the tendon 4. The pressure receiving plate 21 is fastened and pressed to the ground 20 to resist the force of the ground 20. COPYRIGHT: (C)2004,JPO
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