Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Incremental launching construction method of oblique crossing U-shaped steel bridge
The invention discloses an incremental launching construction method of a skew U-shaped steel bridge, which comprises the following steps: according to the structural form of a steel box girder, establishing a model for the stress of the steel box girder and a temporary pier in the incremental launching process, and carrying out design calculation; according to the designed incremental launching scheme, the structural form of the temporary pier is determined, and construction of the temporary pier is conducted; according to the designed pushing scheme, a walking type pushing device is installed; assembling and detecting the steel box girder on site; a bridge deck slab formwork is installed and pushed, and a reverse hanging system is formed; after the reverse hoisting system construction of the bridge floor is completed, inspection and acceptance are conducted, and bridge floor concrete reinforcement plate binding is conducted; pushing construction of the steel box girder is conducted; steel box girder falling is conducted, and the steel box girder falls onto the bridge pier support; an anti-falling shed is installed; pouring bridge floor concrete; and the anti-falling shed and the temporary piers are dismantled. The problem that in the prior art, pushing equipment is transversely arranged, the height difference of a permanent pier cover beam is caused, and beam falling cannot be achieved is solved, and cracks of concrete caused by jacking force generated by jacking of the pushing equipment are reduced.
本发明公开了一种斜交U型钢桥梁的顶推施工方法，包括：根据钢箱梁结构形式，对顶推过程中的钢箱梁受力和临时桥墩建立模型进行设计计算；根据设计的顶推方案，确定临时桥墩的结构形式进行临时桥墩的施工；根据设计的顶推方案，安装步履式顶推设备；现场拼装及检测钢箱梁；安装顶推桥面板模板，形成一个反吊系统；待桥面完成反吊系统施工后，进行检查验收，并进行桥面混凝土钢筋板扎；进行钢箱梁顶推施工；进行钢箱梁落梁，将钢箱梁落至桥墩支座上；安装防落棚；浇筑桥面混凝土；拆除防落棚和临时桥墩。本发明解了现有技术中顶推设备横向布置和永久桥墩盖梁高差的无法落梁的问题，减少混凝土因顶推设备顶升所产生的顶力造成的裂缝。
Incremental launching construction method of oblique crossing U-shaped steel bridge
The invention discloses an incremental launching construction method of a skew U-shaped steel bridge, which comprises the following steps: according to the structural form of a steel box girder, establishing a model for the stress of the steel box girder and a temporary pier in the incremental launching process, and carrying out design calculation; according to the designed incremental launching scheme, the structural form of the temporary pier is determined, and construction of the temporary pier is conducted; according to the designed pushing scheme, a walking type pushing device is installed; assembling and detecting the steel box girder on site; a bridge deck slab formwork is installed and pushed, and a reverse hanging system is formed; after the reverse hoisting system construction of the bridge floor is completed, inspection and acceptance are conducted, and bridge floor concrete reinforcement plate binding is conducted; pushing construction of the steel box girder is conducted; steel box girder falling is conducted, and the steel box girder falls onto the bridge pier support; an anti-falling shed is installed; pouring bridge floor concrete; and the anti-falling shed and the temporary piers are dismantled. The problem that in the prior art, pushing equipment is transversely arranged, the height difference of a permanent pier cover beam is caused, and beam falling cannot be achieved is solved, and cracks of concrete caused by jacking force generated by jacking of the pushing equipment are reduced.
本发明公开了一种斜交U型钢桥梁的顶推施工方法，包括：根据钢箱梁结构形式，对顶推过程中的钢箱梁受力和临时桥墩建立模型进行设计计算；根据设计的顶推方案，确定临时桥墩的结构形式进行临时桥墩的施工；根据设计的顶推方案，安装步履式顶推设备；现场拼装及检测钢箱梁；安装顶推桥面板模板，形成一个反吊系统；待桥面完成反吊系统施工后，进行检查验收，并进行桥面混凝土钢筋板扎；进行钢箱梁顶推施工；进行钢箱梁落梁，将钢箱梁落至桥墩支座上；安装防落棚；浇筑桥面混凝土；拆除防落棚和临时桥墩。本发明解了现有技术中顶推设备横向布置和永久桥墩盖梁高差的无法落梁的问题，减少混凝土因顶推设备顶升所产生的顶力造成的裂缝。
Incremental launching construction method of oblique crossing U-shaped steel bridge
斜交U型钢桥梁的顶推施工方法
WU DEFAN (Autor:in) / HE DEHUA (Autor:in) / JIANG WEISONG (Autor:in) / CHEN XIAOCONG (Autor:in) / XIE YI (Autor:in) / LIU LIJUN (Autor:in) / TANG JIAN (Autor:in) / HUANG SHENGHONG (Autor:in) / ZHOU YONG (Autor:in) / XU YONGHE (Autor:in)
12.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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