[1]周敉,王亮,刘旭奇.基于检测数据映射的在役桥梁有限元模型及抗震性能评价[J].长安大学学报(自然科学版),2025,45(6):1-16.
　ZHOU Mi,WANG Liang,LIU Xu-qi.Finite element models and seismic performance evaluation of in-service bridges based on measured data mapping[J].Journal of Chang’an University (Natural Science Edition),2025,45(6):1-16.
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基于检测数据映射的在役桥梁有限元模型及抗震性能评价()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年6期
页码:
1-16
栏目:
桥梁智能运维与防灾减灾
出版日期:
2025-11-30

文章信息/Info

Title:
Finite element models and seismic performance evaluation of in-service bridges based on measured data mapping
文章编号:
1671-8879(2025)06-0001-16
作者:
周敉1; 2; 王亮1; 2; 刘旭奇1; 2
(1. 长安大学 公路学院,陕西 西安 710064; 2. 长安大学 旧桥检测与加固技术交通行业重点实验室,陕西 西安 710064)
Author(s):
ZHOU Mi1; 2;  WANG Liang1; 2;  LIU Xu-qi1; 2
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Key Laboratory of Transport Industry of Bridge Detection Reinforcement Technology, Chang'an University, Xi'an 710064, Shaanxi, China)
关键词:
桥梁工程;  抗震性能评价;  CSI Bridge二次开发;  在役桥梁;  有限元模型修正;  参数灵敏度分析
Keywords:
bridge engineering;  seismic performance evaluation;  secondary development of CSI Bridge;  in-service bridge;  finite element model correction;  parameter sensitivity analysis
分类号:
U447
文献标志码:
A
摘要:
为解决因材料性能退化及建造误差导致设计参数与成桥状态存在偏差,进而影响桥梁抗震性能评估准确性的问题,建立了基于检测数据映射的在役桥梁有限元模型; 基于C#语言对大型有限元软件CSI Bridge进行二次开发,建立了数字映射模型的实现程序,以高效提取并修改CSI Bridge参数,并基于模态频率和地震响应对某大跨径连续刚构桥的材料属性、几何属性和边界条件进行了参数灵敏度分析; 根据现场检测数据,依托开发的数字映射模型实现程序提取和修改了初始有限元模型的相关参数,得到了基于检测数据映射的有限元模型,并分别对修正前后的有限元模型进行了地震响应分析和抗震性能评价。研究结果表明:对于经过一定服役年限并遭受材料性能退化和建造误差影响的连续刚构桥,其结构刚度相较于设计阶段会有所下降,其抗震性能整体上低于初始有限元模型; 模型修正后桥墩关键截面的地震弯矩和等效屈服弯矩的最大降幅分别为26.7%和40.0%,且主墩墩顶截面的能力需求比低于限值; 主梁和主墩混凝土材料属性、主墩截面几何属性和墩柱钢筋屈服强度灵敏度最高,在现场检测中需优先考虑。研究结果可为在役桥梁的抗震性能评价提供参考。
Abstract:
To solve the problem of deviations between design parameters and as-built bridge condition caused by material performance degradation and construction errors, which affects the accuracy of seismic performance evaluation, a finite element model of an in-service bridge was established based on measured data mapping. Through the secondary development of CSI Bridge using the C# language, an implementation procedure for the digital mapping model was developed to efficiently extract and modify the parameters in CSI Bridge. Based on the modal frequencies and seismic responses, a parameter sensitivity analysis was conducted on the material properties, geometric properties, and boundary conditions of a long-span continuous rigid bridge. Using the field measured data, the relevant parameters of the initial finite element model were extracted and modified by means of the developed digital mapping model implementation procedure, resulting in a finite element model based on the measured data mapping. Then, the seismic response analysis and seismic performance evaluation were carried out on the finite element models before and after correction, respectively. The research results indicate that for a continuous rigid bridge that has been in service for certain years and is affected by material degradation and construction errors, its structural stiffness decreases compared to the design stage, and its seismic performance is generally lower than that of the initial finite element model. After the model correction, the maximum reductions in seismic bending moment and equivalent yield bending moment at critical sections of piers are 26.7% and 40.0%, respectively, and the capacity requirement ratio at the top section of main pier is below the limit value. The concrete material properties of main girder and piers, the geometric properties of main pier section, and the steel bar yield strength of pier column have the highest sensitivity. They should be prioritized during the field measurement. The research results can provide a reference for the seismic performance evaluation of in-service bridges.7 tabs, 19 figs, 32 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-04-12
基金项目:国家自然科学基金项目(51978062); 陕西省重点研发计划项目(2024SF-YBXM-644); 山西省交通运输科技项目(2021-02-03); 陕西省交通运输科研项目(22-05K); 中央高校基本科研业务费专项资金项目(300102212209)
作者简介:周 敉(1977-),男,陕西商州人,教授,工学博士,E-mail:zhoumi@chd.edu.cn。
更新日期/Last Update: 2025-12-20