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Construction method for steel-concrete combined section of single-tower cable-stayed bridge
The invention provides a single-tower cable-stayed bridge steel-concrete combined section construction method which comprises the following steps that S1, a floor type steel pipe support is arranged in a steel-concrete consolidation area, S2, loading and pre-pressing are carried out after the support is erected, S3, a bottom die and an outer side die are installed above a bailey beam, S4, the bottom die and the outer side die are installed above the bailey beam, and S5, the steel-concrete combined section of the single-tower cable-stayed bridge is constructed. The concrete beam pouring and the tower beam consolidation end of the steel-concrete combined section are synchronously constructed, the steel beam end of the steel-concrete combined section is of a multi-cell structure, and holes are filled with self-compacting concrete to be connected with the concrete beam into a whole, S4, prestressed tensioning is conducted on a steel-concrete combined section beam body, and grouting and anchor sealing are conducted after tensioning is completed; and S5, the formworks, the bailey beams and the supports are dismantled. Concrete beam construction is carried out by arranging the support at the support tower body, meanwhile, synchronous construction of the concrete pouring section and the steel box beam section is carried out, the construction efficiency is improved, construction joints are reserved, steel bars and shear bars are poured into a whole in the later period, and therefore the structural strength of a bridge body is met.
本发明提供一种独塔斜拉桥钢混结合段施工方法，包括以下步骤，步骤S1，在钢混固结区域设置落地式钢管支架，步骤S2，支架搭设完成后进行加载预压，步骤S3，在贝雷梁上方进行底模、外侧模安装，步骤S4，混凝土梁浇筑与钢混结合段的塔梁固结端同步施工，钢混结合段钢梁端部为多格室结构，在孔内填充自密实混凝土与混凝土梁连接成一个整体，步骤S4，对钢混结合段梁体进行预应力张拉，张拉完成后进行压浆和封锚；步骤S5，拆除模板、贝雷梁和支架。通过在支架塔体处设置支架进行混凝土梁施工，同时进行混凝土浇筑段和钢箱梁段同步施工，提高了施工效率，预留施工缝，后期利用钢筋和剪力筋浇筑为一体，从而满足桥体的结构强度。
Construction method for steel-concrete combined section of single-tower cable-stayed bridge
The invention provides a single-tower cable-stayed bridge steel-concrete combined section construction method which comprises the following steps that S1, a floor type steel pipe support is arranged in a steel-concrete consolidation area, S2, loading and pre-pressing are carried out after the support is erected, S3, a bottom die and an outer side die are installed above a bailey beam, S4, the bottom die and the outer side die are installed above the bailey beam, and S5, the steel-concrete combined section of the single-tower cable-stayed bridge is constructed. The concrete beam pouring and the tower beam consolidation end of the steel-concrete combined section are synchronously constructed, the steel beam end of the steel-concrete combined section is of a multi-cell structure, and holes are filled with self-compacting concrete to be connected with the concrete beam into a whole, S4, prestressed tensioning is conducted on a steel-concrete combined section beam body, and grouting and anchor sealing are conducted after tensioning is completed; and S5, the formworks, the bailey beams and the supports are dismantled. Concrete beam construction is carried out by arranging the support at the support tower body, meanwhile, synchronous construction of the concrete pouring section and the steel box beam section is carried out, the construction efficiency is improved, construction joints are reserved, steel bars and shear bars are poured into a whole in the later period, and therefore the structural strength of a bridge body is met.
本发明提供一种独塔斜拉桥钢混结合段施工方法，包括以下步骤，步骤S1，在钢混固结区域设置落地式钢管支架，步骤S2，支架搭设完成后进行加载预压，步骤S3，在贝雷梁上方进行底模、外侧模安装，步骤S4，混凝土梁浇筑与钢混结合段的塔梁固结端同步施工，钢混结合段钢梁端部为多格室结构，在孔内填充自密实混凝土与混凝土梁连接成一个整体，步骤S4，对钢混结合段梁体进行预应力张拉，张拉完成后进行压浆和封锚；步骤S5，拆除模板、贝雷梁和支架。通过在支架塔体处设置支架进行混凝土梁施工，同时进行混凝土浇筑段和钢箱梁段同步施工，提高了施工效率，预留施工缝，后期利用钢筋和剪力筋浇筑为一体，从而满足桥体的结构强度。
Construction method for steel-concrete combined section of single-tower cable-stayed bridge
一种独塔斜拉桥钢混结合段施工方法
HUANG ZIYANG (author) / WANG CHANGGUI (author) / LI GUANGHUI (author) / SU HUANYING (author) / ZHANG XIANSUO (author) / CHEN XIANGSHUAI (author) / YANG HUIBIN (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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