A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tensioning construction method for back cable and stay cable of cable-stayed bridge
The invention discloses a tensioning construction method for a back cable and a stay cable of a cable-stayed bridge. The back cable is composed of 595 1960 MPa prestressed steel strands, the 595 steel strands are divided into 7 groups, 85 steel strands are arranged in each group, and the steel strands are dispersedly anchored at the tower top and the anchor point of the back cable and tensioned at the beam bottom; the stay cables are finished cables, cable bodies are sequentially numbered as the stay cables from the first stay cable to the tenth stay cable, and the stay cables are anchored on fork lugs on a tower and tensioned and anchored on a bridge deck steel box girder. The construction method comprises the steps of sequential cable penetrating, tensioning and overall tensioning. The problems that in the tensioning construction of the 595 steel strand back cables, the designed cable force is large, and the cable force uniformity is difficult to control are solved, and a new technical scheme can be provided for tensioning of super-large-specification cable bodies.
本发明公开了斜拉桥背索和斜拉索张拉施工方法；背索由595根1960MPa预应力钢绞线组成，595根钢绞线分为7组，每组85根，在塔顶和背索下锚点分散锚固，梁底张拉；斜拉索采用成品索，索体编号依次为1号斜拉索至10号斜拉索，斜拉斜拉索在塔上叉耳锚固，在桥面钢箱梁张拉锚固。施工方法包含依次穿索和张拉、整体张拉步骤。本发明解决了595根钢绞线背索张拉施工中设计索力大、索力均匀性控制难的问题，可为超大规格的索体张拉提供新的技术方案。
Tensioning construction method for back cable and stay cable of cable-stayed bridge
The invention discloses a tensioning construction method for a back cable and a stay cable of a cable-stayed bridge. The back cable is composed of 595 1960 MPa prestressed steel strands, the 595 steel strands are divided into 7 groups, 85 steel strands are arranged in each group, and the steel strands are dispersedly anchored at the tower top and the anchor point of the back cable and tensioned at the beam bottom; the stay cables are finished cables, cable bodies are sequentially numbered as the stay cables from the first stay cable to the tenth stay cable, and the stay cables are anchored on fork lugs on a tower and tensioned and anchored on a bridge deck steel box girder. The construction method comprises the steps of sequential cable penetrating, tensioning and overall tensioning. The problems that in the tensioning construction of the 595 steel strand back cables, the designed cable force is large, and the cable force uniformity is difficult to control are solved, and a new technical scheme can be provided for tensioning of super-large-specification cable bodies.
本发明公开了斜拉桥背索和斜拉索张拉施工方法；背索由595根1960MPa预应力钢绞线组成，595根钢绞线分为7组，每组85根，在塔顶和背索下锚点分散锚固，梁底张拉；斜拉索采用成品索，索体编号依次为1号斜拉索至10号斜拉索，斜拉斜拉索在塔上叉耳锚固，在桥面钢箱梁张拉锚固。施工方法包含依次穿索和张拉、整体张拉步骤。本发明解决了595根钢绞线背索张拉施工中设计索力大、索力均匀性控制难的问题，可为超大规格的索体张拉提供新的技术方案。
Tensioning construction method for back cable and stay cable of cable-stayed bridge
斜拉桥背索和斜拉索张拉施工方法
LI CHUNQUAN (author) / XIAO LANG (author) / XIA XUECHENG (author) / HOU HEPING (author) / WU YILONG (author) / HUANG YONGZHONG (author) / LUO XINYU (author) / WU WENTAO (author) / LUO JUN (author) / ZHANG LIBEN (author)
2024-07-05
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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