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A platform for research: civil engineering, architecture and urbanism
Closure method for mid-span steel box girders of large-span floating system cable-stayed bridge
The invention discloses a closure method for mid-span steel box girders of a large-span floating system cable-stayed bridge. The closure method comprises the following steps: temporary longitudinal bridge direction limiting is conducted on steel box girder sections at a main tower; the mid-span steel box girders are assembled by a cantilever; the mid-span steel box girders on the two sides of a closure opening are monitored, and a closure section steel box girder is manufactured according to the monitoring result; the temporary longitudinal bridge direction limit is released, the mid-span steel box girders in the direction away are moved from the closure gap, and first temporary locking is carried out; the closure section steel box girder is hoisted; the first temporary locking is released, the mid-span steel box girders are moved towards the closure gap to be reset, and second temporary locking is carried out; the relative postures of the closure section steel box girder and the mid-span steel box girders are adjusted and temporarily fixed; web connection and ring opening locking between the closure section steel box girder and the mid-span steel box girders are conducted; temporary fixing and second-time temporary locking are relieved; and a top plate, a bottom plate and a welding seam are welded between the closure section steel box girder and the mid-span steel box girders.The method is low in requirement for the natural environment and high in construction operability.
本发明公开了大跨度漂浮体系斜拉桥中跨钢箱梁的合龙方法，包括如下步骤：对主塔处的钢箱梁节段进行临时纵桥向限位；悬臂拼装中跨钢箱梁；对合龙口两侧的中跨钢箱梁进行监测，根据监测结果制造合龙段钢箱梁；解除临时纵桥向限位，朝远离合龙口方向移动中跨钢箱梁并进行第一次临时锁定；吊装合龙段钢箱梁；解除第一次临时锁定，朝合龙口方向移动中跨钢箱梁，使其复位，并进行第二次临时锁定；调整合龙段钢箱梁与中跨钢箱梁的相对姿态并临时固定；进行合龙段钢箱梁与中跨钢箱梁之间的腹板连接及环口锁定；解除临时固定及第二次临时锁定；进行合龙段钢箱梁与中跨钢箱梁之间的顶板、底板及焊缝的焊接。本发明对自然环境要求较低，施工操作性较高。
Closure method for mid-span steel box girders of large-span floating system cable-stayed bridge
The invention discloses a closure method for mid-span steel box girders of a large-span floating system cable-stayed bridge. The closure method comprises the following steps: temporary longitudinal bridge direction limiting is conducted on steel box girder sections at a main tower; the mid-span steel box girders are assembled by a cantilever; the mid-span steel box girders on the two sides of a closure opening are monitored, and a closure section steel box girder is manufactured according to the monitoring result; the temporary longitudinal bridge direction limit is released, the mid-span steel box girders in the direction away are moved from the closure gap, and first temporary locking is carried out; the closure section steel box girder is hoisted; the first temporary locking is released, the mid-span steel box girders are moved towards the closure gap to be reset, and second temporary locking is carried out; the relative postures of the closure section steel box girder and the mid-span steel box girders are adjusted and temporarily fixed; web connection and ring opening locking between the closure section steel box girder and the mid-span steel box girders are conducted; temporary fixing and second-time temporary locking are relieved; and a top plate, a bottom plate and a welding seam are welded between the closure section steel box girder and the mid-span steel box girders.The method is low in requirement for the natural environment and high in construction operability.
本发明公开了大跨度漂浮体系斜拉桥中跨钢箱梁的合龙方法，包括如下步骤：对主塔处的钢箱梁节段进行临时纵桥向限位；悬臂拼装中跨钢箱梁；对合龙口两侧的中跨钢箱梁进行监测，根据监测结果制造合龙段钢箱梁；解除临时纵桥向限位，朝远离合龙口方向移动中跨钢箱梁并进行第一次临时锁定；吊装合龙段钢箱梁；解除第一次临时锁定，朝合龙口方向移动中跨钢箱梁，使其复位，并进行第二次临时锁定；调整合龙段钢箱梁与中跨钢箱梁的相对姿态并临时固定；进行合龙段钢箱梁与中跨钢箱梁之间的腹板连接及环口锁定；解除临时固定及第二次临时锁定；进行合龙段钢箱梁与中跨钢箱梁之间的顶板、底板及焊缝的焊接。本发明对自然环境要求较低，施工操作性较高。
Closure method for mid-span steel box girders of large-span floating system cable-stayed bridge
一种大跨度漂浮体系斜拉桥中跨钢箱梁的合龙方法
FU XIAOPENG (author) / HU HAIBO (author) / ZHANG JING (author) / YANG WENMING (author) / JIN HONGYAN (author) / HU JUN (author) / XIE HONGYUE (author) / LI YONG (author) / LIU JIANHUA (author) / WANG YINFENG (author)
2020-08-11
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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