A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid circulation construction method for upper structure of superposed beam cable-stayed bridge
The invention provides a rapid circulation construction method for an upper structure of a superposed beam cable-stayed bridge. The construction method comprises the following steps: firstly, continuously hoisting front four steel beam sections of a main beam cantilever, mounting a bridge deck on each beam section during connection, moving a bridge deck crane forwards to the forefront beam section, pouring wet joints of bridge decks of the other three beam sections at one time, and secondarily tensioning stay cables for a reverse sequence of the three beam sections; and then carrying out threebeam section construction every time according to the method till that all the cantilever beam sections are installed. Compared with an existing section-by-section installation method, by using the method of the invention, a construction progress can be improved; and compared with an existing method that wet joints of all beam sections are poured at the same time and the stay cables are tensionedin sequence, by using the method of the invention, a cracking risk of bridge decks and the wet joints can be avoided, cost is saved, and construction quality is guaranteed.
本发明提供一种叠合梁斜拉桥上部结构快速循环施工方法，先连续吊装主梁悬臂前4个钢梁段，每个梁段连接期间在其上进行桥面板安装，桥面吊机前移到最前端梁段上，对其余3个梁段桥面板湿接缝一次性浇筑，并对3个梁段逆序二次张拉斜拉索；然后按照前述方法每次进行3个梁段施工，直至悬臂梁段全部安装完成。本发明与现有的逐段安装方法相比，可提高施工进度，与现有全部梁段湿接缝同时浇筑并顺序张拉斜拉索方法相比，可避免桥面板及湿接缝开裂风险，节约成本，保证施工质量。
Rapid circulation construction method for upper structure of superposed beam cable-stayed bridge
The invention provides a rapid circulation construction method for an upper structure of a superposed beam cable-stayed bridge. The construction method comprises the following steps: firstly, continuously hoisting front four steel beam sections of a main beam cantilever, mounting a bridge deck on each beam section during connection, moving a bridge deck crane forwards to the forefront beam section, pouring wet joints of bridge decks of the other three beam sections at one time, and secondarily tensioning stay cables for a reverse sequence of the three beam sections; and then carrying out threebeam section construction every time according to the method till that all the cantilever beam sections are installed. Compared with an existing section-by-section installation method, by using the method of the invention, a construction progress can be improved; and compared with an existing method that wet joints of all beam sections are poured at the same time and the stay cables are tensionedin sequence, by using the method of the invention, a cracking risk of bridge decks and the wet joints can be avoided, cost is saved, and construction quality is guaranteed.
本发明提供一种叠合梁斜拉桥上部结构快速循环施工方法，先连续吊装主梁悬臂前4个钢梁段，每个梁段连接期间在其上进行桥面板安装，桥面吊机前移到最前端梁段上，对其余3个梁段桥面板湿接缝一次性浇筑，并对3个梁段逆序二次张拉斜拉索；然后按照前述方法每次进行3个梁段施工，直至悬臂梁段全部安装完成。本发明与现有的逐段安装方法相比，可提高施工进度，与现有全部梁段湿接缝同时浇筑并顺序张拉斜拉索方法相比，可避免桥面板及湿接缝开裂风险，节约成本，保证施工质量。
Rapid circulation construction method for upper structure of superposed beam cable-stayed bridge
一种叠合梁斜拉桥上部结构快速循环施工方法
WU QIANKUN (author) / ZHANG YAHAI (author) / DONG DAOFU (author) / GUO BAOSHENG (author) / YI HANBIN (author) / WANG LEI (author)
2020-10-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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