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Steel arch bridge deck laminated slab hoisting process
A steel arch bridge deck laminated slab hoisting process comprises the following steps that A1, a temporary platform is constructed, rubber gaskets are arranged on cross beams, and prefabricated slabs are symmetrically hoisted to designed positions from the two sides at the same time through a truck crane; A2, single-face lap welding is conducted on reinforcing ribs extending outwards of djacent prefabricated slabs, a filling cavity is formed by gaps between the adjacent prefabricated slabs and a bearing beam, and the filling cavity is filled with CF50 shrinkage compensation steel fiber concrete to form wet joints; and A3, chiseling and cleaning are conducted on the prefabricated bridge deck slab, a reinforcing mesh is bound on site and laid to the prefabricated bridge deck slab and a joint, and concrete is poured on the reinforcing mesh. Factory prefabrication and on-site hoisting are conducted through the prefabricated slabs, bridge deck construction loads are transmitted to the arch bridge bearing main frame through the truck crane and the temporary platform, the process is simple, practical, low in manufacturing cost and capable of being used in a large area, and the defects that the thickness of a bridge deck is small and the bearing capacity is poor before construction of the laminated slab can be effectively overcome.
本发明的钢拱桥桥面叠合板吊装工艺，包括以下步骤：步骤A1，构建临时平台，在横梁上设置橡胶垫片，采用汽车吊将预制板由两侧对称式同时进行吊装至设计位置；步骤A2，对相邻的预制板向外延伸加强筋采用单面搭焊，相邻所述预制板之间间隙与承载梁形成填充腔，在所述填充腔内建筑填CF50补偿收缩钢纤维混凝土形成湿接缝；步骤A3，对预制桥面板进行凿毛清理，现场绑扎钢筋网片，并铺设至预制桥面板及接缝处，对所述钢筋网片上浇筑混凝土。本发明通过预制板进行工厂预制，现场吊装，利用汽车吊及临时平台，将桥面施工荷载传递到拱桥承重主框架上，简单、实用，造价低，可大面积使用，能有效克服叠合板未施工前，桥面板厚度薄、承载力的不足。
Steel arch bridge deck laminated slab hoisting process
A steel arch bridge deck laminated slab hoisting process comprises the following steps that A1, a temporary platform is constructed, rubber gaskets are arranged on cross beams, and prefabricated slabs are symmetrically hoisted to designed positions from the two sides at the same time through a truck crane; A2, single-face lap welding is conducted on reinforcing ribs extending outwards of djacent prefabricated slabs, a filling cavity is formed by gaps between the adjacent prefabricated slabs and a bearing beam, and the filling cavity is filled with CF50 shrinkage compensation steel fiber concrete to form wet joints; and A3, chiseling and cleaning are conducted on the prefabricated bridge deck slab, a reinforcing mesh is bound on site and laid to the prefabricated bridge deck slab and a joint, and concrete is poured on the reinforcing mesh. Factory prefabrication and on-site hoisting are conducted through the prefabricated slabs, bridge deck construction loads are transmitted to the arch bridge bearing main frame through the truck crane and the temporary platform, the process is simple, practical, low in manufacturing cost and capable of being used in a large area, and the defects that the thickness of a bridge deck is small and the bearing capacity is poor before construction of the laminated slab can be effectively overcome.
本发明的钢拱桥桥面叠合板吊装工艺，包括以下步骤：步骤A1，构建临时平台，在横梁上设置橡胶垫片，采用汽车吊将预制板由两侧对称式同时进行吊装至设计位置；步骤A2，对相邻的预制板向外延伸加强筋采用单面搭焊，相邻所述预制板之间间隙与承载梁形成填充腔，在所述填充腔内建筑填CF50补偿收缩钢纤维混凝土形成湿接缝；步骤A3，对预制桥面板进行凿毛清理，现场绑扎钢筋网片，并铺设至预制桥面板及接缝处，对所述钢筋网片上浇筑混凝土。本发明通过预制板进行工厂预制，现场吊装，利用汽车吊及临时平台，将桥面施工荷载传递到拱桥承重主框架上，简单、实用，造价低，可大面积使用，能有效克服叠合板未施工前，桥面板厚度薄、承载力的不足。
Steel arch bridge deck laminated slab hoisting process
钢拱桥桥面叠合板吊装工艺
CHENG HUAQIANG (author) / GAO YUN (author) / MA MEI (author) / LI XUEQIANG (author) / SU XIN (author) / QIN XIANG (author)
2021-04-20
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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