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A platform for research: civil engineering, architecture and urbanism
Stiffening cable structure of suspension bridge and design method of stiffening cable structure
The invention discloses a stiffening cable structure of a suspension bridge and a design method of the stiffening cable structure, and relates to the technical field of bridge structures, the suspension bridge comprises a main beam and two bridge towers, and the stiffening cable structure comprises two sets of stay cables and a plurality of slings; the two sets of stay cables are symmetrically arranged in the longitudinal bridge direction of the main beam. Each group of stay cables stretch across and are anchored to a bridge tower, one side of each group of stay cables is anchored to a side span pier or an anchorage of the suspension bridge, and the other side of each group of stay cables is anchored to a quartered span area of a main beam; the slings located at the same longitudinal position of the quartered span area of the stay cable are crossed slings. A saddle weight with a set weight is arranged at an anchor point position where the stay cable is fixed on the main beam; under the action of the stay cables and the saddle weights, the dead-load cable force of the crossed slings does not exceed the dead-load cable force of the non-crossed slings, and the vertical displacement extreme value of the girders in the quarter-span area is not larger than the vertical displacement extreme value of the midspan girders. According to the stiffening cable structure and the design method thereof, the technical problem that in the prior art, the vertical rigidity of a suspension bridge is small is solved.
本申请公开了一种悬索桥的加劲索构造及其设计方法，涉及桥梁结构技术领域，所述悬索桥包含主梁和两个桥塔，所述加劲索构造包括两组斜拉索和若干吊索；两组斜拉索沿主梁的纵桥向对称设置；每组斜拉索横跨锚固于一个桥塔，且每组斜拉索的一侧锚固于悬索桥的边跨桥墩或锚碇，另一侧锚固于主梁的四分跨区域；位于斜拉索四分跨区域同一纵向位置的吊索为交叉吊索；所述斜拉索固定于主梁的锚点位置设置设定重量的压重块；在斜拉索和压重块的作用下，所述交叉吊索的恒载索力不超过非交叉吊索的恒载索力，且四分跨区域的主梁的竖向位移极值不大于跨中主梁的竖向位移极值。本申请的加劲索构造及其设计方法，以解决相关技术中悬索桥竖向刚度小的技术问题。
Stiffening cable structure of suspension bridge and design method of stiffening cable structure
The invention discloses a stiffening cable structure of a suspension bridge and a design method of the stiffening cable structure, and relates to the technical field of bridge structures, the suspension bridge comprises a main beam and two bridge towers, and the stiffening cable structure comprises two sets of stay cables and a plurality of slings; the two sets of stay cables are symmetrically arranged in the longitudinal bridge direction of the main beam. Each group of stay cables stretch across and are anchored to a bridge tower, one side of each group of stay cables is anchored to a side span pier or an anchorage of the suspension bridge, and the other side of each group of stay cables is anchored to a quartered span area of a main beam; the slings located at the same longitudinal position of the quartered span area of the stay cable are crossed slings. A saddle weight with a set weight is arranged at an anchor point position where the stay cable is fixed on the main beam; under the action of the stay cables and the saddle weights, the dead-load cable force of the crossed slings does not exceed the dead-load cable force of the non-crossed slings, and the vertical displacement extreme value of the girders in the quarter-span area is not larger than the vertical displacement extreme value of the midspan girders. According to the stiffening cable structure and the design method thereof, the technical problem that in the prior art, the vertical rigidity of a suspension bridge is small is solved.
本申请公开了一种悬索桥的加劲索构造及其设计方法，涉及桥梁结构技术领域，所述悬索桥包含主梁和两个桥塔，所述加劲索构造包括两组斜拉索和若干吊索；两组斜拉索沿主梁的纵桥向对称设置；每组斜拉索横跨锚固于一个桥塔，且每组斜拉索的一侧锚固于悬索桥的边跨桥墩或锚碇，另一侧锚固于主梁的四分跨区域；位于斜拉索四分跨区域同一纵向位置的吊索为交叉吊索；所述斜拉索固定于主梁的锚点位置设置设定重量的压重块；在斜拉索和压重块的作用下，所述交叉吊索的恒载索力不超过非交叉吊索的恒载索力，且四分跨区域的主梁的竖向位移极值不大于跨中主梁的竖向位移极值。本申请的加劲索构造及其设计方法，以解决相关技术中悬索桥竖向刚度小的技术问题。
Stiffening cable structure of suspension bridge and design method of stiffening cable structure
一种悬索桥的加劲索构造及其设计方法
FU ZHANGONG (author) / HE DONGSHENG (author) / DAI HUIMIN (author) / ZHOU YINDONG (author)
2023-03-07
Patent
Electronic Resource
Chinese
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