Calculation method of eccentricity increase coefficient of arch rib of long⁃span arch bridge

被引：0
|
作者：
Guo F. [1 ,2 ]
Li P.-F. [3 ]
Mao J.-Y. [4 ]
Dong Y.-Z. [4 ]
机构：
[1] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang
[2] Key Laboratory of Roads and Railway Engineering Safety Control, Ministry of Education, Shijiazhuang Tiedao University, Shijiazhuang
[3] Key Laboratory of Transportation Industry of Old Bridge Inspection and Reinforcement Technology (Beijing), Beijing
[4] Shijiazhuang Rail Transportation Group Co., Ltd., Shijiazhuang
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2022年 / 52卷 / 06期
关键词：
Arch rib; Moment amplification coefficient; Second-order moment effect; Strain potential energy; Variational method;
D O I：
10.13229/j.cnki.jdxbgxb20220147
中图分类号：
学科分类号：
摘要：
Combined with the basic principle of variational method and the characteristics of interaction after deformation of tied arch structure, a practical calculation method of eccentric distance increase coefficient is proposed. Through engineering case analysis, the calculation result of this paper is compared with the normative method of bridge and the finite element method. The results show that the calculation formula specified in the code has the largest result, the calculation result of the formula is large, the finite element calculation result is small. This above means the proposed method is widely applicable and safe. The calculations of the eccentricity increase coefficient of are quite different in catenary, parabola, circular arc and straight rod with constraints at both ends, related to the constraint conditions of the tie-rod arch and the forms of load. © 2022, Jilin University Press. All right reserved.
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页码：1404 / 1412
页数：8
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