A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lossless stay cable replacement method
The invention relates to a lossless stay cable replacement method, which comprises the following steps of: arranging a lower anchoring beam in a beam bottom transverse bridge direction at a position where a stay cable to be replaced and a main beam are anchored, arranging two cantilever trolleys on a bridge floor, tensioning the lower anchoring beam through a lower pull rod, mounting a hoop on a cable tower, and arranging a temporary stay cable along a direction parallel to the stay cable to be replaced, the two ends of the temporary inhaul cable are temporarily anchored with the hoop and the lower anchoring beam correspondingly; the stay cable to be replaced is completely transferred to the temporary stay cable, the stay cable to be replaced is dismantled, a new stay cable is installed in situ and tensioned in a grading mode, the temporary stay cable is synchronously released in a grading mode, the cable force of the temporary stay cable is completely transferred to the new stay cable, and stay cable replacement is completed. Temporary anchoring devices do not need to be welded to the main beam and the cable bent tower, the surfaces of the main beam and the cable bent tower are not damaged, and the construction efficiency is high.
本发明涉及一种无损式斜拉索更换方法，在待更的换斜拉索与主梁锚固位置梁底横桥向设置下锚固梁，在桥面设置两台悬臂台车通过下拉杆拉紧下锚固梁，在索塔上安装一抱箍，沿与待更换斜拉索平行的方向设置临时拉索，将临时拉索两端分别与抱箍和下锚固梁临时锚固；分级张拉临时拉索，同步分级放张待更换拉索，将待更换拉索的索力全部转移到临时拉索上，拆除待更换拉索，原位安装并分级张拉新拉索，同步分级放张临时拉索，将临时拉索的索力全部转换到新拉索上，完成斜拉索更换。本发明无需在主梁及索塔上焊接锚固临时装置，不损伤主梁及索塔表面，并且施工效率高。
Lossless stay cable replacement method
The invention relates to a lossless stay cable replacement method, which comprises the following steps of: arranging a lower anchoring beam in a beam bottom transverse bridge direction at a position where a stay cable to be replaced and a main beam are anchored, arranging two cantilever trolleys on a bridge floor, tensioning the lower anchoring beam through a lower pull rod, mounting a hoop on a cable tower, and arranging a temporary stay cable along a direction parallel to the stay cable to be replaced, the two ends of the temporary inhaul cable are temporarily anchored with the hoop and the lower anchoring beam correspondingly; the stay cable to be replaced is completely transferred to the temporary stay cable, the stay cable to be replaced is dismantled, a new stay cable is installed in situ and tensioned in a grading mode, the temporary stay cable is synchronously released in a grading mode, the cable force of the temporary stay cable is completely transferred to the new stay cable, and stay cable replacement is completed. Temporary anchoring devices do not need to be welded to the main beam and the cable bent tower, the surfaces of the main beam and the cable bent tower are not damaged, and the construction efficiency is high.
本发明涉及一种无损式斜拉索更换方法，在待更的换斜拉索与主梁锚固位置梁底横桥向设置下锚固梁，在桥面设置两台悬臂台车通过下拉杆拉紧下锚固梁，在索塔上安装一抱箍，沿与待更换斜拉索平行的方向设置临时拉索，将临时拉索两端分别与抱箍和下锚固梁临时锚固；分级张拉临时拉索，同步分级放张待更换拉索，将待更换拉索的索力全部转移到临时拉索上，拆除待更换拉索，原位安装并分级张拉新拉索，同步分级放张临时拉索，将临时拉索的索力全部转换到新拉索上，完成斜拉索更换。本发明无需在主梁及索塔上焊接锚固临时装置，不损伤主梁及索塔表面，并且施工效率高。
Lossless stay cable replacement method
一种无损式斜拉索更换方法
LU GUANNAN (author) / ZHANG HUAWU (author) / HE LU (author) / LI YOUQING (author) / WANG CHUNJIAN (author) / LIU ZHANGUO (author) / LI SHUAI (author) / GAN SHUKUAN (author) / WU RUIHUAN (author) / SU JINTANG (author)
2025-01-07
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Luling Bridge Stay Cable Replacement
| ASCE | 2009
Luling Bridge Stay Cable Replacement
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| European Patent Office | 2020