特集－橋りょう解体工事－ - miyaji-eng.co.jp

1 62 PC 1 1 1 20 2 3 4 2 5 120m 60m+60m 6 7 105t 8 9 H21. Feature Demolition Work of Bridges Some bridges built in the Taisho and Showa eras are to be demolished after being used for a long time. We have been involved in many such demolition works for some years. This article describes the demolition of four steel bridges Adera-bashi, Katsuse-bashi, Akasaka-bashi, and Murayama-bashi and one concrete bridge Tsutsumigawa PC.

2 Summary 1 2 3 4 5 3 Kazuhisa ASAKURA 5 Atsushi HIBIYAT omokazu YOSHIDA 2 Masayuki SATAKE 4 Yutaka IKEDA 1 Kazuriro WATANABE 4 1 (1) 1) : 20 2) : 3) : 4) : 2 5) : 120m(60m+60m) 6) : 7) : 105t *1 *2 8) : 9) H21.

3 10) 1960 2 2008 *3 *1 2 *3 YUTAKA IKEDA TOMOKAZU YOSHIDA KAZUHISA ASAKURA *3 *3 *3 KAZURIRO WATANABE MASAYUKI SATAKE ATSUSHI HIBIYA Summary

4 63 10 1960 2 2008 1 2 3 4 64 2 1 20 0 2 3 4 1 5 6 7 120t 8 9 H21. H22. 10 1960 80 5 6 7 8 2 (2) 1) : 20 0 2) : 3) : 4) : 1 5) : 6) : 7) : 120t 8) : 9) H21.

5 H22. 65 3 1 21 2 3 4 3 5 6 7 210t 8 9 H21. 7. 1 H22. 10 1957 12 10 11 3 9 (3) 1) : 21 2) : 3) : 4) : 3 5) : 6) : 7) : 210t 8) : 9) H21.

6 7. 1 H22. 10) 1957 66 4 1 21 2 406 3 4 4 5 4 6 7 636t 8 9 10 1926 15 2 2 1990 2009 4

7 16 14 15 4 13 (4) 1) : 21 2) : 406 3) : 4) : 4 5) : 4 6) : 7) : 636t 8) : 9) 10) 1926 15 2 2 1990 2009 4 672 1 PC 1 B 2 3 4 PC T 5 2 6 7 376t 2 188t 8 9 H21.

8 H22. 10 42 20 18 19 5 17 (1) 1) : 2) : 3) : 4) : 5) : 2 6) : 7) : 376t 2 188t 8) : 9) : H21. H22. 10) 42 68 ( )

9 GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGG II 7 RC 4m P1 P4 5 R 50m A 50m L 50m R 42m 5 P3 A2 2 RC 1 2 1 2 14 14 15 9 2 4 2 2 4 2 4

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