桥梁结构安全性评价力学状态参数标定方法

doi:10.16265/j.cnki.issn1003-3033.2018.09.016

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (9): 92-97.doi: 10.16265/j.cnki.issn1003-3033.2018.09.016

桥梁结构安全性评价力学状态参数标定方法

刘君奎¹ 高级工程师, 赵莉弘² 高级工程师, 王建民³ 副研究员

1 赤峰市公路管理处,内蒙古赤峰 024000
2 北京交通运输职业学院,北京 100096
3 北京中交弘建路桥技术有限公司, 北京 100095

收稿日期:2018-07-01 修回日期:2018-08-09 出版日期:2018-09-28 发布日期:2020-09-28
作者简介:刘君奎(1981—),男,内蒙古赤峰人,硕士,高级工程师,主要从事道路与桥梁工程方面的检测评定工作。E-mail:896389618@qq.com.cn。
基金资助:
福建省交通运输科技发展项目(201607);内蒙古自治区交通运输科技项目 (NJ-2018-25)。

Study on method of calibrating state parameters for bridge structure safety evaluation

LIU Junkui¹, ZHAO Lihong², WANG Jianmin³

1 Chifeng Highway Management Office,ChifengNeimenggu 024000,China
2 Beijing Jiaotong Vocational Technical College,Beijing 100096,China
3 Beijing CCCC Hongjian Road and Bridge Technology Co., Ltd.,Beijing 100095,China

Received:2018-07-01 Revised:2018-08-09 Online:2018-09-28 Published:2020-09-28

摘要/Abstract

摘要： 为建立有效的桥梁结构安全评估有限元模型,提出基于桥梁结构诊断试验数据的力学参数标定方法,考虑力学参数及作用效应参数量值的相关性,结合对两者的规则化,消除灵敏度分析时灵敏度矩阵的奇异性;在优化目标函数中引入罚函数来改善收敛效率及收敛性;并通过标定一座在役桥梁结构力学参数有限元模型,分析试验测试数据与以基于结构设计参数得到的作用效应值偏差较大的原因,并验证所提出方法的有效性。结果表明:基于诊断试验的桥梁结构力学参数标定方法,可有效解决传统分析方法与试验结果差异较大的问题,有助于准确评价桥梁结构安全性。

关键词: 桥梁工程, 力学状态, 诊断试验, 灵敏度分析, 参数标定

Abstract: In order to build an effective finite element model for safety evaluation of bridge structure, a calibration method of mechanical parameters based on the diagnostic test data for bridge structure was worked out. Singularity of sensitivity matrix in sensitivity analysis was avoided by means of regularization of both the mechanical parameters and the load effect parameters. For improving converge efficiency and convergence of the optimization objective function, a penalty function was introduced into it. In addition, by calibrating the finite element model of an existing bridge structural mechanics parameters, the reason for the large deviation between the test data and the load effect value based on the structural design parameters was specified, and the effectiveness of the proposed method was verified. The results show that the mechanical parameter calibration of bridge structure based on diagnostic test can effectively solve the problem of large difference between analysis method and test result, and that it can provide a feasible method for evaluating objectively the safety of bridge structure.

Key words: bridge engineering, mechanics state, diagnostic load test, sensitivity analysis, parameter calibration

中图分类号:

X913.3

刘君奎, 赵莉弘, 王建民. 桥梁结构安全性评价力学状态参数标定方法[J]. 中国安全科学学报, 2018, 28(9): 92-97.

LIU Junkui, ZHAO Lihong, WANG Jianmin. Study on method of calibrating state parameters for bridge structure safety evaluation[J]. China Safety Science Journal, 2018, 28(9): 92-97.

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桥梁结构安全性评价力学状态参数标定方法

Study on method of calibrating state parameters for bridge structure safety evaluation

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