A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Closing method and system for main beam of single-tower cable-stayed bridge
The embodiment of the invention provides a closure method and system for a main beam of a single-tower cable-stayed bridge. The closure method comprises the steps that a first support is installed at the tail end of a cantilever section of a main beam, and the first support is provided with a sliding groove parallel to the bridge direction; mounting a second support on the approach bridge; a temporary locking structure is installed, one end of the temporary locking structure is fixedly connected with the second support, and the other end of the temporary locking structure is slidably connected with the sliding groove of the first support; a closure section of the main beam is installed; and the first support, the second support and the temporary locking structure are dismantled. According to the embodiment of the invention, the cantilever section of the main beam and the approach bridge are locked rigidly only along the transverse direction of the bridge, and can generate relative displacement along the vertical direction and the longitudinal direction of the bridge; the linear shape and the structural rigidity of the main beam in the transverse bridge direction are guaranteed in an economical and reasonable mode, the process is simple, and construction is convenient and fast. The dead weight of the temporary locking structure is completely borne by the approach bridge, so that difficulty brought to vertical linear control of the final main beam is avoided, and the complexity of linear control of the bridge is reduced.
本申请实施例提供了一种单塔斜拉桥主梁的合龙方法及合龙系统。合龙方法包括：在主梁的悬臂节段末端安装第一支座，第一支座具有平行于顺桥向的滑槽；在引桥上安装第二支座；安装临时锁定结构，临时锁定结构的一端与第二支座固定连接且另一端与第一支座的滑槽滑动连接；安装主梁的合龙节段；拆除第一支座、第二支座和临时锁定结构。本申请实施例通过主梁的悬臂节段与引桥仅沿横桥向进行劲性锁定，而沿竖向、顺桥向可以产生相对位移；用经济合理的方式保证了主梁沿横桥向的线形及结构刚度，工艺简单，施工便捷。临时锁定结构的自重完全由引桥承担，从而避免给最终主梁竖向线形控制带来困难，降低了桥梁线形控制的复杂程度。
Closing method and system for main beam of single-tower cable-stayed bridge
The embodiment of the invention provides a closure method and system for a main beam of a single-tower cable-stayed bridge. The closure method comprises the steps that a first support is installed at the tail end of a cantilever section of a main beam, and the first support is provided with a sliding groove parallel to the bridge direction; mounting a second support on the approach bridge; a temporary locking structure is installed, one end of the temporary locking structure is fixedly connected with the second support, and the other end of the temporary locking structure is slidably connected with the sliding groove of the first support; a closure section of the main beam is installed; and the first support, the second support and the temporary locking structure are dismantled. According to the embodiment of the invention, the cantilever section of the main beam and the approach bridge are locked rigidly only along the transverse direction of the bridge, and can generate relative displacement along the vertical direction and the longitudinal direction of the bridge; the linear shape and the structural rigidity of the main beam in the transverse bridge direction are guaranteed in an economical and reasonable mode, the process is simple, and construction is convenient and fast. The dead weight of the temporary locking structure is completely borne by the approach bridge, so that difficulty brought to vertical linear control of the final main beam is avoided, and the complexity of linear control of the bridge is reduced.
本申请实施例提供了一种单塔斜拉桥主梁的合龙方法及合龙系统。合龙方法包括：在主梁的悬臂节段末端安装第一支座，第一支座具有平行于顺桥向的滑槽；在引桥上安装第二支座；安装临时锁定结构，临时锁定结构的一端与第二支座固定连接且另一端与第一支座的滑槽滑动连接；安装主梁的合龙节段；拆除第一支座、第二支座和临时锁定结构。本申请实施例通过主梁的悬臂节段与引桥仅沿横桥向进行劲性锁定，而沿竖向、顺桥向可以产生相对位移；用经济合理的方式保证了主梁沿横桥向的线形及结构刚度，工艺简单，施工便捷。临时锁定结构的自重完全由引桥承担，从而避免给最终主梁竖向线形控制带来困难，降低了桥梁线形控制的复杂程度。
Closing method and system for main beam of single-tower cable-stayed bridge
单塔斜拉桥主梁的合龙方法及合龙系统
LI HONGJIE (author) / XU KAILAI (author) / WANG XIN (author) / ZHANG CHUANTAO (author) / WANG CHONG (author) / LIU XIAOQI (author) / GAO ZHIJIE (author) / DING RUI (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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