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A platform for research: civil engineering, architecture and urbanism
Construction method of large-span reinforced concrete bridge
The invention discloses a construction method of a large-span reinforced concrete bridge. The method comprises the following steps: erecting a prefabricated steel beam between adjacent piers, and arranging at least one reverse lifting part on the prefabricated steel beam; mounting a reverse lifting hanging cross beam on a bridge girder erection machine, wherein at least one reverse lifting force applying part is arranged on the reverse lifting hanging cross beam; the reverse lifting force applying part is connected with the reverse lifting parts of the prefabricated steel beam, the reverse lifting force applying part is controlled to apply upward first reverse lifting force to the reverse lifting parts, and the prefabricated bridge deck slabs are sequentially laid on the prefabricated steel beam after the first reverse lifting force is applied; after the second reverse lifting force is applied, concrete is poured into joints between the adjacent prefabricated bridge deck slabs, and curing is conducted for set time; and the reverse lifting force applied to the reverse lifting parts by the reverse lifting force applying part is unloaded, the next steel beam is erected by the bridge girder erection machine, and the next steel beam is connected with the previous steel beam. The problems that due to the fact that an existing large-span steel-concrete bridge is large in dead weight, the quality control difficulty of the prefabricated steel beam is large, and the manufacturing cost is high are solved.
本发明公开一种大跨度钢混桥梁的施工方法，其包括如下步骤：在相邻的桥墩之间架设预制钢梁，预制钢梁上设置至少一个反提部；将反提吊挂横梁安装于架桥机上，反提吊挂横梁上设置至少一个反提力施加部；将反提力施加部与预制钢梁的反提部连接，并控制反提力施加部向反提部施加向上的第一次反提力，并在施加第一次反提力后在预制钢梁上依次铺设预制桥面板；施加第二次反提力后在相邻预制桥面板之间的接缝内浇筑混凝土，养护设定时间；卸载反提力施加部向反提部施加的反提力，架桥机架设下一孔钢梁，并将下一孔钢梁与前一孔钢梁连接。本发明解决了现有大跨度钢混桥梁自重较大导致预制的钢梁质量控制难度大、造价较高的问题。
Construction method of large-span reinforced concrete bridge
The invention discloses a construction method of a large-span reinforced concrete bridge. The method comprises the following steps: erecting a prefabricated steel beam between adjacent piers, and arranging at least one reverse lifting part on the prefabricated steel beam; mounting a reverse lifting hanging cross beam on a bridge girder erection machine, wherein at least one reverse lifting force applying part is arranged on the reverse lifting hanging cross beam; the reverse lifting force applying part is connected with the reverse lifting parts of the prefabricated steel beam, the reverse lifting force applying part is controlled to apply upward first reverse lifting force to the reverse lifting parts, and the prefabricated bridge deck slabs are sequentially laid on the prefabricated steel beam after the first reverse lifting force is applied; after the second reverse lifting force is applied, concrete is poured into joints between the adjacent prefabricated bridge deck slabs, and curing is conducted for set time; and the reverse lifting force applied to the reverse lifting parts by the reverse lifting force applying part is unloaded, the next steel beam is erected by the bridge girder erection machine, and the next steel beam is connected with the previous steel beam. The problems that due to the fact that an existing large-span steel-concrete bridge is large in dead weight, the quality control difficulty of the prefabricated steel beam is large, and the manufacturing cost is high are solved.
本发明公开一种大跨度钢混桥梁的施工方法，其包括如下步骤：在相邻的桥墩之间架设预制钢梁，预制钢梁上设置至少一个反提部；将反提吊挂横梁安装于架桥机上，反提吊挂横梁上设置至少一个反提力施加部；将反提力施加部与预制钢梁的反提部连接，并控制反提力施加部向反提部施加向上的第一次反提力，并在施加第一次反提力后在预制钢梁上依次铺设预制桥面板；施加第二次反提力后在相邻预制桥面板之间的接缝内浇筑混凝土，养护设定时间；卸载反提力施加部向反提部施加的反提力，架桥机架设下一孔钢梁，并将下一孔钢梁与前一孔钢梁连接。本发明解决了现有大跨度钢混桥梁自重较大导致预制的钢梁质量控制难度大、造价较高的问题。
Construction method of large-span reinforced concrete bridge
一种大跨度钢混桥梁的施工方法
WANG CHENGWEI (author) / LIU WEI (author) / LI KEKE (author) / WANG KUNJIE (author) / LIU ZHENG (author) / WANG TAO (author) / ZHAO YONGZHONG (author) / XU TAO (author) / WU XIAOLING (author) / ZHANG JINGSONG (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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