A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Unsupported large-span hyperbolic cross-city viaduct steel box girder sectional construction method
The invention provides an unsupported large-span hyperbolic cross-city viaduct steel box girder sectional construction method. The method comprises the steps that S1, other girder sections except a first arc girder section and a second arc girder section in a cross-bridge section are installed in advance; S2, the first arc girder section is hoisted firstly, and the two ends of the first arc girdersection are connected with two fractures of the cross-bridge section correspondingly; S3, the second arc girder section is hoisted, the two ends of the second arc girder section are connected with the two fractures of the cross-bridge section correspondingly, and the arc joint of the second arc girder section and the arc joint of the first arc girder section are connected; and S4, hoisting is completed, and a crane evacuates from the site. According to the method, a support-free hoisting is adopted, a temporary buttress does not need to be erected on an existing bridge during construction, the influence on traffic on the bridge during buttress erection is avoided, the number of cross-bridge sections is smaller than that of cross-bridge sections adopting a conventional hoisting method, thehoisting progress is accelerated, meanwhile, the number of welded junctions and the length of weld joints are reduced, the construction time of the cross-bridge sections is shortened, and the influence on the ground traffic for a long time is also avoided.
本发明提供一种无支撑大跨度双曲线跨城市高架桥钢箱梁分段施工的方法，该方法包括步骤S1预先安装跨桥梁段中除第一弧梁段和第二弧梁段外的其他梁段，步骤S2先吊装第一弧梁段，第一弧梁段的两端分别与跨桥梁段的两个断口连接，步骤S3起吊第二弧梁段，第二弧梁段的两端分别与跨桥梁段的两个断口连接，并连接第二弧梁段与第一弧梁段的弧形接缝处，步骤S4吊装完成，撤离现场。本发明采用无支撑吊装方法施工不需要在既有的桥梁上架设临时支墩，避免了架设支墩时对桥上交通的影响，且跨桥梁段分段数量少于常规吊装方法，加快了吊装进度的同时也减少了焊口数量和焊缝长度，缩短了跨桥梁段的施工时间，也避免了长时间对地面交通的影响。
Unsupported large-span hyperbolic cross-city viaduct steel box girder sectional construction method
The invention provides an unsupported large-span hyperbolic cross-city viaduct steel box girder sectional construction method. The method comprises the steps that S1, other girder sections except a first arc girder section and a second arc girder section in a cross-bridge section are installed in advance; S2, the first arc girder section is hoisted firstly, and the two ends of the first arc girdersection are connected with two fractures of the cross-bridge section correspondingly; S3, the second arc girder section is hoisted, the two ends of the second arc girder section are connected with the two fractures of the cross-bridge section correspondingly, and the arc joint of the second arc girder section and the arc joint of the first arc girder section are connected; and S4, hoisting is completed, and a crane evacuates from the site. According to the method, a support-free hoisting is adopted, a temporary buttress does not need to be erected on an existing bridge during construction, the influence on traffic on the bridge during buttress erection is avoided, the number of cross-bridge sections is smaller than that of cross-bridge sections adopting a conventional hoisting method, thehoisting progress is accelerated, meanwhile, the number of welded junctions and the length of weld joints are reduced, the construction time of the cross-bridge sections is shortened, and the influence on the ground traffic for a long time is also avoided.
本发明提供一种无支撑大跨度双曲线跨城市高架桥钢箱梁分段施工的方法，该方法包括步骤S1预先安装跨桥梁段中除第一弧梁段和第二弧梁段外的其他梁段，步骤S2先吊装第一弧梁段，第一弧梁段的两端分别与跨桥梁段的两个断口连接，步骤S3起吊第二弧梁段，第二弧梁段的两端分别与跨桥梁段的两个断口连接，并连接第二弧梁段与第一弧梁段的弧形接缝处，步骤S4吊装完成，撤离现场。本发明采用无支撑吊装方法施工不需要在既有的桥梁上架设临时支墩，避免了架设支墩时对桥上交通的影响，且跨桥梁段分段数量少于常规吊装方法，加快了吊装进度的同时也减少了焊口数量和焊缝长度，缩短了跨桥梁段的施工时间，也避免了长时间对地面交通的影响。
Unsupported large-span hyperbolic cross-city viaduct steel box girder sectional construction method
无支撑大跨度双曲线跨城市高架桥钢箱梁分段施工的方法
YANG JINLIN (author) / WANG JIANJUN (author) / LI ZHITAO (author) / WANG HUAIDONG (author) / XING WENTAO (author) / HUANG YU (author) / LI HUI (author) / ZHANG NAN (author) / LUAN HUA (author) / ZHANG LI (author)
2020-12-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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