A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel truss girder suspension bridge first girder and second cable construction method
The invention relates to a steel truss girder suspension bridge girder-first and cable-second construction method, which comprises the following steps of: firstly, symmetrically and vertically splicing a girder part section on two sides of a main tower by using an auxiliary tower frame, initially rotating by using a horizontal jack, then unloading and rotating to be horizontal by using a buckling and hanging system, hoisting the girder section and a midspan closure section in a main tower area, and finally hoisting the girder section and the midspan closure section in the main tower area; and installing a main cable by using an auxiliary tower, then installing a sling, and finally removing auxiliary measures. The method has the advantages that the steel beam splicing speed is high, the linear control precision is high, large-scale overwater hoisting machinery is not needed, temporary supports are arranged in water, the number of temporary facilities is small, the economical efficiency is good, the channel is not occupied, the application range is wide, and the method is suitable for crossing complex obstacles such as high-speed rails and highways or overwater bridge construction.
本发明是一种钢桁梁悬索桥先梁后缆施工方法，首先利用辅助塔架将主梁部分节段在主塔两侧对称竖向拼装，利用水平千斤顶初始转动后，通过扣挂系统卸落转动至水平，再吊装主塔区域的主梁节段和跨中合拢段，再利用辅助塔架安装主缆，再安装吊索，最后拆除辅助措施。本发明具有钢梁拼装速度快，线性控制精度高，无需大型水上吊装机械，水中设置临时支撑，临时设施少，经济性好，不占用航道的优势，使用范围广，适用于跨越高铁、公路等复杂障碍的情况或水上桥梁施工。
Steel truss girder suspension bridge first girder and second cable construction method
The invention relates to a steel truss girder suspension bridge girder-first and cable-second construction method, which comprises the following steps of: firstly, symmetrically and vertically splicing a girder part section on two sides of a main tower by using an auxiliary tower frame, initially rotating by using a horizontal jack, then unloading and rotating to be horizontal by using a buckling and hanging system, hoisting the girder section and a midspan closure section in a main tower area, and finally hoisting the girder section and the midspan closure section in the main tower area; and installing a main cable by using an auxiliary tower, then installing a sling, and finally removing auxiliary measures. The method has the advantages that the steel beam splicing speed is high, the linear control precision is high, large-scale overwater hoisting machinery is not needed, temporary supports are arranged in water, the number of temporary facilities is small, the economical efficiency is good, the channel is not occupied, the application range is wide, and the method is suitable for crossing complex obstacles such as high-speed rails and highways or overwater bridge construction.
本发明是一种钢桁梁悬索桥先梁后缆施工方法，首先利用辅助塔架将主梁部分节段在主塔两侧对称竖向拼装，利用水平千斤顶初始转动后，通过扣挂系统卸落转动至水平，再吊装主塔区域的主梁节段和跨中合拢段，再利用辅助塔架安装主缆，再安装吊索，最后拆除辅助措施。本发明具有钢梁拼装速度快，线性控制精度高，无需大型水上吊装机械，水中设置临时支撑，临时设施少，经济性好，不占用航道的优势，使用范围广，适用于跨越高铁、公路等复杂障碍的情况或水上桥梁施工。
Steel truss girder suspension bridge first girder and second cable construction method
一种钢桁梁悬索桥先梁后缆施工方法
QIANG WEILIANG (author) / GAO PU (author) / ZHOU JUNLONG (author) / XIE PENGLIN (author) / GENG WENBIN (author) / LI XIAOLEI (author) / LI LINTING (author)
2023-06-06
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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