考虑部件相关性的斜拉桥状态评估
PDF下载 (272)伊西艳,汪 炳,刘小玲.考虑部件相关性的斜拉桥状态评估[J].宁波大学学报(理工版),2022,35(2):43-50.DOI:
YI Xiyan,WANG Bing,LIU Xiaoling.Cable-stayed bridge condition evaluation considering component correlation[J].Journal of Ningbo University(Natural Science & Engineering Edition),2022,35(2):43-50.DOI:
| Title: | Cable-stayed bridge condition evaluation considering component correlation |
| 作者: | 伊西艳, 汪 炳, 刘小玲 |
| Author(s): | YI Xiyan, WANG Bing, LIU Xiaoling |
| 关键词: | 斜拉桥; 状态评估; 相关性; Pagerank算法 |
| Keywords: | cable-stayed bridge; status valuation; correlation; Pagerank algorithm |
| 分类号: | U446.2 |
| 文献标识码: | A |
| 摘要: | 为提高斜拉桥评估可靠性, 开展考虑部件相关性的斜拉桥状态评估研究. 首先建立斜拉桥系统各部件故障传递有向图, 基于Pagerank算法分析各部件相关性, 得到部件的影响度和被影响度; 其次, 针对人工检查指标, 建立分段线性扣分评定标准, 针对健康监测指标, 根据力学模型设定主梁挠度和索力的评定标准; 最后, 考虑部件单独产生的故障率和其他部件故障被影响度, 提出一种融合部件相关性的斜拉桥状态评估方法. 以某特大跨径钢结构斜拉桥为例, 用改进方法和相关评定规范进行评定对比. 结果表明, 主梁线形、索力和索塔线形的被影响度和影响度都较大, 是桥梁健康监测的重要指标; 主梁外观检查和支座被影响度大、影响度小, 是故障表象部件, 在预防性养护时要着重关注; 排水系统和机电设施被影响度小、影响度大, 是故障源部件, 需持续保持良好状态. 本文建立的评估方法指标全面, 考虑了部件的相关性, 因此评估结果更加可靠, 可为桥梁养护决策提供依据. |
| Abstract: | To improve the reliability of cable-stayed bridge evaluation, the condition evaluation of cable-stayed bridge considering component correlation was carried out. Firstly, the directed diagram of fault transmission of each component in cable-stayed bridge system was established, and the correlation of each component was analyzed based on Pagerank algorithm to obtain the influencing degree and influenced degree of each component. Secondly, the piecewise linear deduction evaluation criteria of manual inspection indicators were established. For health monitoring indicators, the evaluation criteria of girder deflection and cable force were set according to mechanical model. Finally, considering the failure rate of individual components and the influenced degree of other component faults, a condition evaluation method with component correlation for cable-stayed bridge was proposed. Taking a super long-span steel cable-stayed bridge as an example, the proposed method was compared with the relevant evaluation specifications. The results show the influencing degree and influenced degree of girder alignment, cable force and tower alignment are great, which are important indicators for bridge health monitoring. Girder appearance inspection and bridge bearing have high influenced degree but low influencing degree, which are the fault appearance components. They should be paid attention to in preventive maintenance. The drainage system and electromechanical facilities are the fault source components that have low influenced degree and high influencing degree. They must be kept in good condition. The evaluation method established in this paper has comprehensive indicators and takes into account the correlation of components. Therefore, the evaluation results are more reliable and can provide basis for bridge maintenance decision-making. |
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| 备注/Memo: | 收稿日期: 2021－10－11. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（51808301）; 浙江省自然科学基金（LQ19E080006）; 跨海大桥安全保障与智能运行学科创新引智基地（D21013）. 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/第一作者: 伊西艳（1997－）, 女, 山东临沂人, 在读硕士研究生, 主要研究方向: 大跨径桥梁的养护与评估研究. E-mail: yixiyan111@163.com *通信作者: 刘小玲（1988－）, 女, 江苏连云港人, 副教授, 主要研究方向: 大跨径桥梁的养护与评估研究. E-mail: liuxiaoling@nbu.edu.cn |
