| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an extension anchor with an auxiliary reinforcing plate using a spring capable of reliably supporting a structure prepared even with a strong earthquake resistance and also of reducing an impact. Ž<P>SOLUTION: The auxiliary reinforcing plate 6 and an extension anchor body 1 are mounted in an extension-anchor-body inserting hole 18 by using a caulking 11, an auxiliary reinforcing-supporting-plate nail 25 is inserted, a metal fitting 15 for an extension insertion is used, an extension-inserting nail 4 is pushed out up to a position of the extension inserting nail 4a, and an extension-sliding prevention 2 is lined. A supporting-male bolt 14 is screwed into an extension-female screw 5, which is inserted into a through-hole provided as a passing hole 19 for supporting a base stone while the impact-prevention spring 12 and a washer 13 are fitted and fixed with a supporting-female nut 16. The extension anchor with the auxiliary reinforcing plate can be used widely by adjusting the length of the supporting male bolt even when the structures are piled in many layers as seen in Fig.1 and Fig.14. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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