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東北新幹線直上のPC桁・鋼桁架設(東北縦貫線工事)

PC . ( ) .. 1 .. 600m .. 1800t . 1 . 1 .. 2013 4 19 . PC .. 1 PC .. 600m .. 2,3 1,2 . RC 350m (a) 580m (b) 750m . 2 . (a) 16 (b) 19 . ( ) PC .. ( ).. ( ).. 2008 3 2013 11 . ( ). 3 2 .. 2 .. 1) 600m RC . 2) 350m RC 8 . 3) 580m 8 8 . 4) 750m PC 17 2 . 2 . 5) 600m 14 .. PC Prestressed Concrete . 17 2 19 3 .. PC . 40m 2 . 150mm . 1 . PC .. 3 .. (m) ( ) ( ) (t) . Cbp1 17 20 39 320 590 11 19 30.. Gd1 57 550 30. 23 PC 4,5 2 .. Gd2 43 380 25. 6,7 3 . Gd1 . PC Cbp17 . Gd2 . PC Cbp9 . 4 PC 6 . 5 PC 7 Gd1 . 2 PC 3 Gd1 .. 1800t 7 . 1 4 6 8 . 2009 11 2010 6 . PC 17 2 19 (a) .. 2010 9 2013 .. 4 .. (b) 1 2 . (b)-1 .. 4 2 .. 4 PC (b)-2 .. 4.. (c) . (c)-1 . (c)-2 . (c)-3 . (c)-4 2 4 . 5 .. 4 2 . 4 .. (d) . (e) .. 6 PC 8 .. 20 ( ) 68 20 . 41 60 . Gd1 57 . ( ) 130 . 7 Gd1 2012 3 .. Gd1 . Gd1 . 19 9 . Gd1 460mm Gd1 .. Gd1 Gd2 . 0 500mm . CAD Gd1 4 . 5 9 8 .. a) .. b) PL.

5.桁架設時の課題と対処 (1)最長の桁である鋼桁Gd1架設への対処 a)曲線桁Gd1の後部タワー通過時の干渉

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Transcription of 東北新幹線直上のPC桁・鋼桁架設(東北縦貫線工事)