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BRIDGE GIRDER ERECTION METHOD FOR MULTIPLE SPAN CONTINUOUS BRIDGE
PROBLEM TO BE SOLVED: To provide a bridge girder erection method for a multiple span continuous bridge which allows for the construction of a bridge girder comprised of PCa segments using an erected girder shorter than a conventional one.SOLUTION: An erected girder 30 is arranged so that the rear end of the erected girder 30 is supported by a rear overhanging girder 11 positioned at an erection span Svia a support 33, and the middle part of the erected girder 30 is supported by a front column head 4F positioned at the erection span S(Figure 6 (A)). Thereafter, a PCa segment 5 is arranged using the erected girder 30; then a front overhanging girder 12, a next span Srear overhanging girder 11, and a girder connection part 16 are constructed. A bridge girder 3 is then spanned across a rear bridge pier 2B and a front bridge pier 2F (Figure 6 (B)-(C)). Thereafter, the erected girder 30 is moved so that the rear end of the erected girder 30 is supported by the rear overhanging girder 11positioned at the next span Svia the support 33, and the middle part of the erected girder 30 is supported by a front column head 4Fpositioned at the next span S(Figure 7, Figure 8). Through repeating these steps, a bridge girder 3 may be continuously extended across a plurality of spans S.SELECTED DRAWING: Figure 6
【課題】従来よりも短い架設桁を用いてＰＣａセグメントからなる橋桁を構築できる多径間連続橋の橋桁架設方法を提供する。【解決手段】支持部３３を介して、架設桁３０の後端が架設径間Ｓ０における後部張出桁１１に支持され、架設桁３０の中間部が架設径間Ｓ０における前方柱頭部４Ｆに支持されるように架設桁３０を配置する（図６（Ａ））。その後、架設桁３０を利用してＰＣａセグメント５を配置し、前部張出桁１２、次径間Ｓ１の後部張出桁１１１、及び桁連結部１６を構築し、後方橋脚２Ｂ及び前方橋脚２Ｆに橋桁３を架け渡す（図６（Ｂ）〜（Ｃ））。その後、支持部３３を介して、架設桁３０の後端が次径間Ｓ１の後部張出桁１１１に支持され、架設桁３０の中間部が次径間Ｓ１の前方柱頭部４Ｆ１に支持されるように架設桁３０を移動する（図７、図８）。これらを繰り返すことにより、複数の径間Ｓに渡って連続して橋桁３を架設する。【選択図】図６
BRIDGE GIRDER ERECTION METHOD FOR MULTIPLE SPAN CONTINUOUS BRIDGE
PROBLEM TO BE SOLVED: To provide a bridge girder erection method for a multiple span continuous bridge which allows for the construction of a bridge girder comprised of PCa segments using an erected girder shorter than a conventional one.SOLUTION: An erected girder 30 is arranged so that the rear end of the erected girder 30 is supported by a rear overhanging girder 11 positioned at an erection span Svia a support 33, and the middle part of the erected girder 30 is supported by a front column head 4F positioned at the erection span S(Figure 6 (A)). Thereafter, a PCa segment 5 is arranged using the erected girder 30; then a front overhanging girder 12, a next span Srear overhanging girder 11, and a girder connection part 16 are constructed. A bridge girder 3 is then spanned across a rear bridge pier 2B and a front bridge pier 2F (Figure 6 (B)-(C)). Thereafter, the erected girder 30 is moved so that the rear end of the erected girder 30 is supported by the rear overhanging girder 11positioned at the next span Svia the support 33, and the middle part of the erected girder 30 is supported by a front column head 4Fpositioned at the next span S(Figure 7, Figure 8). Through repeating these steps, a bridge girder 3 may be continuously extended across a plurality of spans S.SELECTED DRAWING: Figure 6
【課題】従来よりも短い架設桁を用いてＰＣａセグメントからなる橋桁を構築できる多径間連続橋の橋桁架設方法を提供する。【解決手段】支持部３３を介して、架設桁３０の後端が架設径間Ｓ０における後部張出桁１１に支持され、架設桁３０の中間部が架設径間Ｓ０における前方柱頭部４Ｆに支持されるように架設桁３０を配置する（図６（Ａ））。その後、架設桁３０を利用してＰＣａセグメント５を配置し、前部張出桁１２、次径間Ｓ１の後部張出桁１１１、及び桁連結部１６を構築し、後方橋脚２Ｂ及び前方橋脚２Ｆに橋桁３を架け渡す（図６（Ｂ）〜（Ｃ））。その後、支持部３３を介して、架設桁３０の後端が次径間Ｓ１の後部張出桁１１１に支持され、架設桁３０の中間部が次径間Ｓ１の前方柱頭部４Ｆ１に支持されるように架設桁３０を移動する（図７、図８）。これらを繰り返すことにより、複数の径間Ｓに渡って連続して橋桁３を架設する。【選択図】図６
BRIDGE GIRDER ERECTION METHOD FOR MULTIPLE SPAN CONTINUOUS BRIDGE
多径間連続橋の橋桁架設方法
NAKATSUMI KENICHI (author) / KASUGA AKIO (author)
2018-04-05
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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