基于影响矩阵的非对称独塔斜拉桥索力优化研究  

RESEARCH ON CABLE FORCE OPTIMIZATION OF AN ASYMMETRIC SINGLE-TOWER CABLE-STAYED BRIDGE BASED ON INFLUENCE MATRIX

作　　者：史宇杰 单国庆 陈宇航 SHI Yu-jie;SHAN Guo-qing;CHEN Yu-hang(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《南阳理工学院学报》2025年第2期81-88,共8页Journal of Nanyang Institute of Technology

基　　金：安徽省自然科学基金青年项目(2308085QE185)。

摘　　要：非对称斜拉桥结构新颖,成桥阶段的内力和变形都与传统斜拉桥有所不同,故需对索力进行优化计算,获得合理成桥状态。以某在建非对称混合梁独塔斜拉桥为工程背景,提出基于弯曲应变能的影响矩阵法,并结合相应的有限元软件进行建模计算。结果表明:该方法可以得到较为满意的混合梁独塔斜拉桥合理成桥状态,为同类型斜拉桥的设计提供了一定的工程参考价值。Asymmetric cable-stayed bridges are novel in structure,and the internal forces and deformations at the bridge completion stage are different from those of traditional cable-stayed bridges,so it is necessary to optimize the calculation of the rope force to obtain a reasonable bridge completion state.The paper takes a new type of hybrid girder cable-stayed bridge under construction as the engineering background,proposes the influence matrix method based on the bending strain energy,and combines it with the corresponding finite element software to carry out the modelling calculation.The results show that the method can obtain a more satisfactory hybrid girder cable-stayed bridge reasonable bridge state,which provides certain engineering reference value for the design of the same type of cable-stayed bridge.

关 键 词：非对称斜拉桥 影响矩阵法 有限元 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]