基于AHM-TOPSIS法的空间Y形钢箱拱桥拱肋吊装方案比选

作者：魏驰¹，谢可辉¹，杨怀盼¹，陈其达²，赵嘉健³

作者简介：

魏驰，硕士研究生，E-mail: 1105733508@qq.com

作者单位：

1.长安大学公路学院，陕西西安 710064；2.中铁二十局集团第五工程有限公司，云南昆明 650200；3.中铁建安工程设计院有限公司，陕西西安710024

基金项目：

*陕西省交通运输厅项目：V形峡谷大跨度空间Y型钢箱肋拱桥施工关键技术研究(21-62k)

摘要：

将属性层次分析法与TOPSIS法相结合，能考虑不同评价指标的权重，提高评价的科学性和客观性，充分利用属性层次模型（AHM）的优点，避免TOPSIS法中权重分配可能出现的主观性影响。泾河大桥的拱圈分为独拱段和双拱段，拱圈在空间上呈Y字形。针对Y形主、副拱肋缆索吊装问题，开展了主、副拱分开吊装及主、副拱同时吊装2种拱肋吊装施工方案研究，基于AHM-TOPSIS法对空间Y形钢箱拱桥2种施工方案进行比较，通过桥梁有限元计算，模拟分析2种吊装方案，分别得到对应施工吊装方案对桥梁应力、结构稳定性等方面的影响，对比选出最佳施工方案：主、副拱分开吊装有明显优越性。因此，建议空间Y形钢箱拱桥施工时，选择主、副拱分开吊装施工方案。

关键词：桥梁工程；拱桥；Y形钢箱拱桥；吊装；AHM-TOPSIS法；方案；施工技术

English：

The combination of attribute analytic hierarchy process and TOPSIS can consider the weights of different evaluation indicators, improve the scientificity and objectivity of evaluation, make full use of the advantages of AHM, and avoid the possible subjective influence of weight allocation in TOPSIS. The arch circle of Jinghe Bridge is divided into single arch section and double arch section, and the arch circle is Y shape in space. Aiming at the problem of Y-shaped main-secondary arch rib cable hoisting, research was carried out on the construction scheme of separate hoisting and simultaneous hoisting for the main and secondary arches. Based on AHM-TOPSIS method, the two construction schemes of spatial Y-shaped steel box arch bridge were compared, and the two hoisting schemes were simulated and analyzed through the bridge finite element calculation. The influence of the corresponding construction hoisting scheme on the stress and structural stability of the bridge is obtained respectively, and the best construction scheme is selected by comparison: The main and secondary arches hoisting separately has obvious advantages. Therefore, it is suggested that the construction scheme of the Y-shaped steel box arch bridge should be selected to lift the main and secondary arches separately.

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