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A platform for research: civil engineering, architecture and urbanism
Kilometer-level hybrid beam cable-stayed bridge closure method
The invention discloses a closing method for a kilometer-level hybrid beam cable-stayed bridge. The closing method comprises the steps that the pushing direction of main beams on the two sides of thekilometer-level hybrid beam cable-stayed bridge is determined according to the single-side displacement amount; enabling the two-side line shapes of the closure gap to accord with the two-side line shapes of the closure gap in the reference model; after the actual length of the closure opening is equal to the reference length of the closure opening, the closure opening is locked, and pushing is removed; after the closure section beam is hoisted, the unstressed length of the first set inhaul cable is adjusted to a reference value, and the length of the closure section beam is the reference length of a closure opening; calculating a main span steel structure linear relative error, a bridge axis relative error, a tower deviation relative error and a cable force error after the bridge is formed; whether the errors meet corresponding set errors or not is judged, if yes, closure is completed, If not, adjustment is conducted till all the errors meet the corresponding set errors; the relativeerror of the main span steel structure line shape is set to be L/4000, the relative error of the bridge axis is set to be L/40000, the relative error of tower deviation is set to be L/10000, and L isthe main span length.
本发明公开了一种千米级混合梁斜拉桥合龙方法，其包括根据单侧推移量确定千米级混合梁斜拉桥的两侧主梁的顶推方向；使合龙口两侧线形符合基准模型中合龙口两侧线形；使合龙口实际长度等于合龙口基准长度后锁定合龙口并撤除顶推；吊装合龙段梁后将第一设定拉索的无应力长度调整至基准值，合龙段梁的长度为合龙口基准长度；计算成桥后主跨钢结构线形相对误差、桥轴线相对误差、塔偏相对误差和索力误差；判断误差是否满足对应设定误差，若是，合龙完成，否则，调整直至所有误差满足对应设定误差；设定主跨钢结构线形相对误差为L/4000、设定桥轴线相对误差为L/40000、塔偏相对误差为L/10000，L为主跨长度。
Kilometer-level hybrid beam cable-stayed bridge closure method
The invention discloses a closing method for a kilometer-level hybrid beam cable-stayed bridge. The closing method comprises the steps that the pushing direction of main beams on the two sides of thekilometer-level hybrid beam cable-stayed bridge is determined according to the single-side displacement amount; enabling the two-side line shapes of the closure gap to accord with the two-side line shapes of the closure gap in the reference model; after the actual length of the closure opening is equal to the reference length of the closure opening, the closure opening is locked, and pushing is removed; after the closure section beam is hoisted, the unstressed length of the first set inhaul cable is adjusted to a reference value, and the length of the closure section beam is the reference length of a closure opening; calculating a main span steel structure linear relative error, a bridge axis relative error, a tower deviation relative error and a cable force error after the bridge is formed; whether the errors meet corresponding set errors or not is judged, if yes, closure is completed, If not, adjustment is conducted till all the errors meet the corresponding set errors; the relativeerror of the main span steel structure line shape is set to be L/4000, the relative error of the bridge axis is set to be L/40000, the relative error of tower deviation is set to be L/10000, and L isthe main span length.
本发明公开了一种千米级混合梁斜拉桥合龙方法，其包括根据单侧推移量确定千米级混合梁斜拉桥的两侧主梁的顶推方向；使合龙口两侧线形符合基准模型中合龙口两侧线形；使合龙口实际长度等于合龙口基准长度后锁定合龙口并撤除顶推；吊装合龙段梁后将第一设定拉索的无应力长度调整至基准值，合龙段梁的长度为合龙口基准长度；计算成桥后主跨钢结构线形相对误差、桥轴线相对误差、塔偏相对误差和索力误差；判断误差是否满足对应设定误差，若是，合龙完成，否则，调整直至所有误差满足对应设定误差；设定主跨钢结构线形相对误差为L/4000、设定桥轴线相对误差为L/40000、塔偏相对误差为L/10000，L为主跨长度。
Kilometer-level hybrid beam cable-stayed bridge closure method
千米级混合梁斜拉桥合龙方法
XIE MINGZHI (author) / YANG YONGQING (author) / LIANG DONG (author) / JIA HONGYU (author) / LI XIAOBIN (author) / HUANG SHENGQIAN (author)
2020-06-26
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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