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Bottom die for cast-in-place bridge deck slab support of steel-concrete composite beam and construction method
The invention discloses a bottom die of a steel-concrete composite beam cast-in-place bridge deck slab support and a construction method. The bottom die comprises a plurality of truss floor bearing plates. The truss floor support plates are all arranged below a bridge deck slab needing to be poured, are all prefabricated parts, and each truss floor support plate comprises a bottom plate and a truss structure formed by a plurality of upper chord steel bars, a plurality of lower chord steel bars and a plurality of web member steel bars. A top edge reinforcing steel bar is arranged above the upper chord steel bar; bottom edge reinforcing steel bars are arranged on the outer sides of the two lower chord steel bars below the upper chord steel bars and fixed to the corresponding steel beam flanges through cushion blocks, and at least one bottom edge reinforcing steel bar extends in the length direction and crosses the nearest adjacent box chamber, so that the side beam bridge deck slab cantilever arm section steel bar truss floor support plate can stand by itself before pouring. L-shaped wood molds and U-shaped positioning steel bars are arranged on the outward sides of the cantilever floor support plates. On the premise that the structural safety is met, the working procedures of installing and removing the formwork on site can be omitted, the risk of on-site high-altitude operation is reduced, and the cost of the support formwork is saved.
本发明公开了钢混组合梁现浇桥面板支撑的底模及施工方法，包括多块桁架楼承板；桁架楼承板均设置在需要浇筑的桥面板的下面，均为预制件，均包括底板，以及由多根上弦钢筋、多根下弦钢筋和多根腹杆钢筋形成的桁架结构；上弦钢筋的上方设有顶缘加强钢筋；上弦钢筋下方的两根下弦钢筋的外侧均设有底缘加强钢筋，并均采用垫块固定在相应的钢梁翼缘上，且其中最少有一根底缘加强钢筋的长度延伸并跨越相邻最近的箱室，使边梁桥面板挑臂段钢筋桁架楼承板在浇筑前能自站立；挑臂楼承板向外的一侧均设有L型木模及U型定位钢筋。本发明在满足结构安全性的前提下，能免去在现场安装及拆除模板工序，降低现场高空作业风险，节约支架模板费用。
Bottom die for cast-in-place bridge deck slab support of steel-concrete composite beam and construction method
The invention discloses a bottom die of a steel-concrete composite beam cast-in-place bridge deck slab support and a construction method. The bottom die comprises a plurality of truss floor bearing plates. The truss floor support plates are all arranged below a bridge deck slab needing to be poured, are all prefabricated parts, and each truss floor support plate comprises a bottom plate and a truss structure formed by a plurality of upper chord steel bars, a plurality of lower chord steel bars and a plurality of web member steel bars. A top edge reinforcing steel bar is arranged above the upper chord steel bar; bottom edge reinforcing steel bars are arranged on the outer sides of the two lower chord steel bars below the upper chord steel bars and fixed to the corresponding steel beam flanges through cushion blocks, and at least one bottom edge reinforcing steel bar extends in the length direction and crosses the nearest adjacent box chamber, so that the side beam bridge deck slab cantilever arm section steel bar truss floor support plate can stand by itself before pouring. L-shaped wood molds and U-shaped positioning steel bars are arranged on the outward sides of the cantilever floor support plates. On the premise that the structural safety is met, the working procedures of installing and removing the formwork on site can be omitted, the risk of on-site high-altitude operation is reduced, and the cost of the support formwork is saved.
本发明公开了钢混组合梁现浇桥面板支撑的底模及施工方法，包括多块桁架楼承板；桁架楼承板均设置在需要浇筑的桥面板的下面，均为预制件，均包括底板，以及由多根上弦钢筋、多根下弦钢筋和多根腹杆钢筋形成的桁架结构；上弦钢筋的上方设有顶缘加强钢筋；上弦钢筋下方的两根下弦钢筋的外侧均设有底缘加强钢筋，并均采用垫块固定在相应的钢梁翼缘上，且其中最少有一根底缘加强钢筋的长度延伸并跨越相邻最近的箱室，使边梁桥面板挑臂段钢筋桁架楼承板在浇筑前能自站立；挑臂楼承板向外的一侧均设有L型木模及U型定位钢筋。本发明在满足结构安全性的前提下，能免去在现场安装及拆除模板工序，降低现场高空作业风险，节约支架模板费用。
Bottom die for cast-in-place bridge deck slab support of steel-concrete composite beam and construction method
钢混组合梁现浇桥面板支撑的底模及施工方法
DENG YIN (author) / HU FANGJIAN (author) / YAO YINLIANG (author) / XIA GUOXING (author) / HUANG XINYU (author) / XIAO BIN (author)
2023-06-06
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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