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A platform for research: civil engineering, architecture and urbanism
Method for tensioning and replacing slings at single suspension point of suspension bridge
The invention relates to a sling replacement method. A sling is arranged between a main cable and a box girder; the upper end and the lower end of the sling employ a pin joint mode; anchor heads at the upper end and the lower end of the sling are fork-shaped anchor heads; a temporary sling is synchronously and uniformly tensioned according to grades, and the tension of a to-be-replaced sling is unloaded; the tension of the to-be-replaced sling is borne by the temporary sling until the tensioning force of the to-be-replaced sling reaches 0; the pin joint structures at the upper end and the lower end of the to-be-replaced sling are disassembled in an auxiliary mode through a pushing device, so that the to-be-replaced sling can be disassembled; and after the to-be-replaced is replaced with a new sling, the new sling is synchronously and evenly tensioned according to grades and the temporary sling is unloaded, so that the new sling participates in stress.
本发明涉及一种吊索更换方法，吊索设置在主缆和箱梁之间，吊索的上下端均采用销接式，吊索上下端锚头均采用叉形锚头，按照分级同步均匀张拉临时吊索和卸载更换的吊索的张拉力，利用临时索承担更换的吊索的张拉力，直至更换的吊索的张拉力达到0，利用顶推装置辅助拆卸更换的吊索上下端的销接结构以拆除更换的吊索，换上新吊索后再按照分级同步均匀张拉新吊索和卸载临时吊索，使新吊索参与受力。
Method for tensioning and replacing slings at single suspension point of suspension bridge
The invention relates to a sling replacement method. A sling is arranged between a main cable and a box girder; the upper end and the lower end of the sling employ a pin joint mode; anchor heads at the upper end and the lower end of the sling are fork-shaped anchor heads; a temporary sling is synchronously and uniformly tensioned according to grades, and the tension of a to-be-replaced sling is unloaded; the tension of the to-be-replaced sling is borne by the temporary sling until the tensioning force of the to-be-replaced sling reaches 0; the pin joint structures at the upper end and the lower end of the to-be-replaced sling are disassembled in an auxiliary mode through a pushing device, so that the to-be-replaced sling can be disassembled; and after the to-be-replaced is replaced with a new sling, the new sling is synchronously and evenly tensioned according to grades and the temporary sling is unloaded, so that the new sling participates in stress.
本发明涉及一种吊索更换方法，吊索设置在主缆和箱梁之间，吊索的上下端均采用销接式，吊索上下端锚头均采用叉形锚头，按照分级同步均匀张拉临时吊索和卸载更换的吊索的张拉力，利用临时索承担更换的吊索的张拉力，直至更换的吊索的张拉力达到0，利用顶推装置辅助拆卸更换的吊索上下端的销接结构以拆除更换的吊索，换上新吊索后再按照分级同步均匀张拉新吊索和卸载临时吊索，使新吊索参与受力。
Method for tensioning and replacing slings at single suspension point of suspension bridge
一种悬索桥单吊点张拉更换吊索方法
ZHAO JUN (author) / JIANG HUA (author) / CHEN DANDAN (author) / JIN PING (author) / YAO YONGFENG (author) / ZHOU QIANGSHENG (author) / YU YANYING (author) / JIANG KAIFENG (author) / KUANG JIANGUO (author)
2021-08-31
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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