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A platform for research: civil engineering, architecture and urbanism
Design method for reasonable bridge forming state of self-anchored suspension bridge
The invention provides a design method for the reasonable bridge forming state of a self-anchored suspension bridge. The design method comprises the following steps S1, determining the overall arrangement of the self-anchored suspension bridge preliminarily; s2, appointing dead load bending moments at the concerned sections of m + n-2 main beams; s3, according to the dead load bending moment, building m + n-2 moment balance equations, and obtaining m pairs of sling force and n support reaction force by combining one vertical force balance equation and one moment balance equation of the main beam structure; s4, according to the sling force, performing solving through a segmented catenary method, and obtaining the horizontal component force and the vertical component force of the beam end main cable force; s5, updating the horizontal component force and the vertical component force of the beam end main cable force into the static equilibrium equation set; and S6, circulating the steps S3, S4 and S5 until the horizontal component force converges, and obtaining the internal force parameters of the self-anchored suspension bridge. By specifying the concerned section bending moment and depending on the static balance condition, the structure parameters needing to be determined are reduced in the reasonable finished bridge state determination process, and the calculation efficiency is improved.
本发明提供了一种自锚式悬索桥合理成桥状态的设计方法，包括：S1、初步确定自锚式悬索桥的总体布置；S2、指定m+n‑2个主梁关心截面处的恒载弯矩；S3、根据恒载弯矩，构建m+n‑2个力矩平衡方程，结合主梁结构自身的1个竖向力平衡方程和1个力矩平衡方程得到m对吊索力与n处支座反力；S4、根据吊索力，通过分段悬链线法进行求解，得到梁端主缆力的水平分力和竖向分力；S5、将梁端主缆力的水平分力和竖向分力更新入静力平衡方程组；S6、循环S3、S4、S5直至水平分力收敛，获取自锚式悬索桥的内力参数。通过指定关心截面弯矩，依托静力平衡条件，在合理成桥状态确定过程中减少了所需确定的结构参数，提高了计算效率。
Design method for reasonable bridge forming state of self-anchored suspension bridge
The invention provides a design method for the reasonable bridge forming state of a self-anchored suspension bridge. The design method comprises the following steps S1, determining the overall arrangement of the self-anchored suspension bridge preliminarily; s2, appointing dead load bending moments at the concerned sections of m + n-2 main beams; s3, according to the dead load bending moment, building m + n-2 moment balance equations, and obtaining m pairs of sling force and n support reaction force by combining one vertical force balance equation and one moment balance equation of the main beam structure; s4, according to the sling force, performing solving through a segmented catenary method, and obtaining the horizontal component force and the vertical component force of the beam end main cable force; s5, updating the horizontal component force and the vertical component force of the beam end main cable force into the static equilibrium equation set; and S6, circulating the steps S3, S4 and S5 until the horizontal component force converges, and obtaining the internal force parameters of the self-anchored suspension bridge. By specifying the concerned section bending moment and depending on the static balance condition, the structure parameters needing to be determined are reduced in the reasonable finished bridge state determination process, and the calculation efficiency is improved.
本发明提供了一种自锚式悬索桥合理成桥状态的设计方法，包括：S1、初步确定自锚式悬索桥的总体布置；S2、指定m+n‑2个主梁关心截面处的恒载弯矩；S3、根据恒载弯矩，构建m+n‑2个力矩平衡方程，结合主梁结构自身的1个竖向力平衡方程和1个力矩平衡方程得到m对吊索力与n处支座反力；S4、根据吊索力，通过分段悬链线法进行求解，得到梁端主缆力的水平分力和竖向分力；S5、将梁端主缆力的水平分力和竖向分力更新入静力平衡方程组；S6、循环S3、S4、S5直至水平分力收敛，获取自锚式悬索桥的内力参数。通过指定关心截面弯矩，依托静力平衡条件，在合理成桥状态确定过程中减少了所需确定的结构参数，提高了计算效率。
Design method for reasonable bridge forming state of self-anchored suspension bridge
一种自锚式悬索桥合理成桥状态的设计方法
XU JUN (author) / LI FUDING (author) / SUN DONGCHAO (author) / DAI JIANGUO (author) / GU CHAO (author) / CHEN YIQUN (author)
2022-02-11
Patent
Electronic Resource
Chinese
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