A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction process for main arch of span bridge type steel arch
The invention discloses a span bridge type steel arch main arch construction technology. The technology comprises the following construction steps that an anchoring section is installed, specifically, an arch rib steel-concrete combined section is poured and formed through a prefabricated formwork; mounting a screw rod: arranging an anchoring bracket in the formed arch rib steel-concrete combined section, and anchoring and mounting a high-strength screw rod on the anchoring bracket; main arch factory processing: performing main arch pouring processing in a factory to form a main arch structure; pre-burying steel plates on the bridge floor; mounting a distribution beam; splicing and welding on site; jig frame hoisting; hoisting the truss; hoisting the connecting section; and hoisting the main arch. Segmented hoisting is adopted, rapid and convenient installation of the main arch of the bridge is facilitated, segmented staggered welding is adopted, the welding procedure is optimized, the sequence of welding a main welding seam firstly and then welding a secondary welding seam, welding a transverse welding seam firstly and then welding a longitudinal welding seam, welding a transverse partition plate firstly and then welding a web welding seam and then welding a stiffening rib welding seam is adopted, welding is conducted from the middle to the two ends, operation is easy, and safety is high.
本发明公开了一种跨桥式钢拱主拱施工工艺，包括如下施工步骤：锚固段安装：通过预制模板浇筑成型拱肋钢混结合段；螺杆安装：在成型拱肋钢混结合段中设置锚固牛腿，且锚固牛腿上锚固安装有高强螺杆；主拱工厂加工：在工厂进行主拱浇筑加工，形成主拱结构；桥面预埋钢板；分配梁安装；现场拼装焊接；胎架吊装；桁架吊装；连接段吊装；主拱吊装。该发明采用分段吊装，便于桥梁主拱的快速方便安装，采取分段错开焊接，优化焊接程序，先焊主焊缝后焊次焊缝，先焊横向焊缝后焊纵向焊缝，先焊横隔板后焊腹板焊缝再焊焊加劲肋焊缝的顺序，从中间向两端的方向焊接，操作简单，安全性高。
Construction process for main arch of span bridge type steel arch
The invention discloses a span bridge type steel arch main arch construction technology. The technology comprises the following construction steps that an anchoring section is installed, specifically, an arch rib steel-concrete combined section is poured and formed through a prefabricated formwork; mounting a screw rod: arranging an anchoring bracket in the formed arch rib steel-concrete combined section, and anchoring and mounting a high-strength screw rod on the anchoring bracket; main arch factory processing: performing main arch pouring processing in a factory to form a main arch structure; pre-burying steel plates on the bridge floor; mounting a distribution beam; splicing and welding on site; jig frame hoisting; hoisting the truss; hoisting the connecting section; and hoisting the main arch. Segmented hoisting is adopted, rapid and convenient installation of the main arch of the bridge is facilitated, segmented staggered welding is adopted, the welding procedure is optimized, the sequence of welding a main welding seam firstly and then welding a secondary welding seam, welding a transverse welding seam firstly and then welding a longitudinal welding seam, welding a transverse partition plate firstly and then welding a web welding seam and then welding a stiffening rib welding seam is adopted, welding is conducted from the middle to the two ends, operation is easy, and safety is high.
本发明公开了一种跨桥式钢拱主拱施工工艺，包括如下施工步骤：锚固段安装：通过预制模板浇筑成型拱肋钢混结合段；螺杆安装：在成型拱肋钢混结合段中设置锚固牛腿，且锚固牛腿上锚固安装有高强螺杆；主拱工厂加工：在工厂进行主拱浇筑加工，形成主拱结构；桥面预埋钢板；分配梁安装；现场拼装焊接；胎架吊装；桁架吊装；连接段吊装；主拱吊装。该发明采用分段吊装，便于桥梁主拱的快速方便安装，采取分段错开焊接，优化焊接程序，先焊主焊缝后焊次焊缝，先焊横向焊缝后焊纵向焊缝，先焊横隔板后焊腹板焊缝再焊焊加劲肋焊缝的顺序，从中间向两端的方向焊接，操作简单，安全性高。
Construction process for main arch of span bridge type steel arch
一种跨桥式钢拱主拱施工工艺
SUN XIAOBIN (author) / YANG XIAORONG (author) / ZHANG YUJIANG (author) / LI HUIBIN (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Large-span concrete-filled steel tube arch bridge main arch structure and construction method
| European Patent Office | 2021
Arch bridge main arch construction method and assembly type arch bridge construction method
| European Patent Office | 2020
Mingzhuwan Bridge: The Largest Span Three-Main-Truss Steel Arch Bridge
| Taylor & Francis Verlag | 2023
| European Patent Office | 2024
Large-span arch bridge steel arch rib buckling monitoring method
| European Patent Office | 2024