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A platform for research: civil engineering, architecture and urbanism
Integral incremental launching construction method for large-tonnage multi-span high-gravity-center basket arch bridge
The invention discloses an integral incremental launching construction method for a large-tonnage multi-span high-gravity-center basket arch bridge, and the incremental launching construction method for manufacturing the basket arch bridge in a sectional manner and then transferring the basket arch bridge to a site comprises the following steps: S1, manufacturing a secondary splicing platform on the wide side of the site, meanwhile, shore pushing temporary supports are evenly arranged in a secondary assembling platform area at equal intervals, underwater pushing temporary supports are evenly arranged in a corresponding underwater area at equal intervals, a multi-point pushing mode is adopted, then the front end section of the steel main beam is hoisted, and primary pushing is conducted; s2, the middle section of the steel main beam is hoisted to a secondary assembling platform on the secondary assembling area, then an arch rib assembling support is installed at the position, located at the circular seam of the main arch section and the auxiliary arch section, of the steel main beam structure, an arch rib structure is assembled, and secondary pushing is conducted after the whole structure is formed; and S3, the rear end section of the steel main beam is hoisted to a secondary assembly platform through the crawler crane on the secondary assembly area, third-time pushing is conducted, and then the temporary auxiliary facilities are dismantled. According to the invention, the beneficial topographic conditions on the shore are utilized, and a method for integrally splicing on the shore and integrally pushing the walking type large-tonnage belt arch is adopted. According to the scheme, a large amount of overwater operation is converted into land operation, the construction progress is accelerated, and the safety risk of construction is reduced.
本发明公开了一种大吨位多跨高重心提篮拱桥整体顶推施工方法，将所述的提篮拱桥分段式制造好之后运转到现场的顶推施工方法包括如下步骤：S1、在场地宽裕侧制作二次拼装平台，同时在二次拼装平台区域均匀等距布置岸上顶推临时支架，相应水中区域均匀等距布置水中顶推临时支架，采用多点顶推方式，然后吊装钢主梁前端节段，并进行第一次顶推；S2、在二次拼装区域上吊装钢主梁中间节段到二次拼装平台，然后在钢主梁结构上位于主副拱节段环缝处安装拱肋拼装支架并拼装拱肋结构，使其成整体结构后进行第二次顶推；S3、在二次拼装区域上用履带吊吊装钢主梁后端节段到二次拼装平台，进行第三次顶推，而后拆除临时辅助设施。本发明利用岸上有利地形条件，采用岸上整体拼装，步履式大吨位带拱整体顶推方法。该方案将大量的水上作业转为陆地，加快了施工进度，降低了施工的安全风险。
Integral incremental launching construction method for large-tonnage multi-span high-gravity-center basket arch bridge
The invention discloses an integral incremental launching construction method for a large-tonnage multi-span high-gravity-center basket arch bridge, and the incremental launching construction method for manufacturing the basket arch bridge in a sectional manner and then transferring the basket arch bridge to a site comprises the following steps: S1, manufacturing a secondary splicing platform on the wide side of the site, meanwhile, shore pushing temporary supports are evenly arranged in a secondary assembling platform area at equal intervals, underwater pushing temporary supports are evenly arranged in a corresponding underwater area at equal intervals, a multi-point pushing mode is adopted, then the front end section of the steel main beam is hoisted, and primary pushing is conducted; s2, the middle section of the steel main beam is hoisted to a secondary assembling platform on the secondary assembling area, then an arch rib assembling support is installed at the position, located at the circular seam of the main arch section and the auxiliary arch section, of the steel main beam structure, an arch rib structure is assembled, and secondary pushing is conducted after the whole structure is formed; and S3, the rear end section of the steel main beam is hoisted to a secondary assembly platform through the crawler crane on the secondary assembly area, third-time pushing is conducted, and then the temporary auxiliary facilities are dismantled. According to the invention, the beneficial topographic conditions on the shore are utilized, and a method for integrally splicing on the shore and integrally pushing the walking type large-tonnage belt arch is adopted. According to the scheme, a large amount of overwater operation is converted into land operation, the construction progress is accelerated, and the safety risk of construction is reduced.
本发明公开了一种大吨位多跨高重心提篮拱桥整体顶推施工方法，将所述的提篮拱桥分段式制造好之后运转到现场的顶推施工方法包括如下步骤：S1、在场地宽裕侧制作二次拼装平台，同时在二次拼装平台区域均匀等距布置岸上顶推临时支架，相应水中区域均匀等距布置水中顶推临时支架，采用多点顶推方式，然后吊装钢主梁前端节段，并进行第一次顶推；S2、在二次拼装区域上吊装钢主梁中间节段到二次拼装平台，然后在钢主梁结构上位于主副拱节段环缝处安装拱肋拼装支架并拼装拱肋结构，使其成整体结构后进行第二次顶推；S3、在二次拼装区域上用履带吊吊装钢主梁后端节段到二次拼装平台，进行第三次顶推，而后拆除临时辅助设施。本发明利用岸上有利地形条件，采用岸上整体拼装，步履式大吨位带拱整体顶推方法。该方案将大量的水上作业转为陆地，加快了施工进度，降低了施工的安全风险。
Integral incremental launching construction method for large-tonnage multi-span high-gravity-center basket arch bridge
一种大吨位多跨高重心提篮拱桥整体顶推施工方法
LIAO SUQIN (author) / GAO HANKAI (author) / WANG CHENGHAI (author) / HE LIANG (author) / XIAO FENG (author) / ZHENG YINGGUANG (author) / QI JINGWEI (author) / LIU HUIDE (author) / YANG FAN (author) / YAO YU (author)
2023-03-21
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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