|本期目录/Table of Contents|

[1]亓兴军,亓 圣,孙绪法,等.基于模态测试和等效荷载的装配式简支梁桥刚度快速评估[J].建筑科学与工程学报,2023,40(04):117-124.[doi:10.19815/j.jace.2021.08034]
 QI Xingjun,QI Sheng,SUN Xufa,et al.Rapid stiffness evaluation of prefabricated simply supported beam bridge based on modal test and equivalent load[J].Journal of Architecture and Civil Engineering,2023,40(04):117-124.[doi:10.19815/j.jace.2021.08034]
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基于模态测试和等效荷载的装配式简支梁桥刚度快速评估(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
40卷
期数:
2023年04期
页码:
117-124
栏目:
桥梁工程
出版日期:
2023-07-10

文章信息/Info

Title:
Rapid stiffness evaluation of prefabricated simply supported beam bridge based on modal test and equivalent load
文章编号:
1673-2049(2023)04-0117-08
作者:
亓兴军1,亓 圣1,孙绪法1,王珊珊2
(1. 山东建筑大学 交通工程学院,山东 济南 250101; 2. 山东高速集团有限公司,山东 济南 250098)
Author(s):
QI Xingjun1, QI Sheng1, SUN Xufa1, WANG Shanshan2
(1. School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China; 2. Shandong Hi-speed Group Co., Ltd., Jinan 250098, Shandong, China)
关键词:
简支梁桥 刚度 快速评估 等效荷载 模态挠度
Keywords:
simply supported beam bridge stiffness rapid evaluation equivalent load modal deflection
分类号:
TU311
DOI:
10.19815/j.jace.2021.08034
文献标志码:
A
摘要:
把不中断交通的模态测试方法和传统可靠的静力荷载试验方法相结合,提出了装配式简支梁桥刚度快速评估的等效荷载模态挠度测试方法; 以装配式简支空心板桥梁为研究对象,建立无损伤和有损伤状态的有限元模型,提取冲击激励下主梁指定测点的竖向加速度,识别桥梁结构的模态参数,预测主梁位移柔度矩阵; 根据《公路桥梁荷载试验规程》设计静力荷载试验的等效荷载,确定等效荷载作用下有损伤桥梁跨中的实测模态挠度; 根据有限元无损状态的理论挠度计算挠度校验系数,结合规范快速评估损伤桥梁的刚度状况,并通过对桥梁跨中模态挠度和理论挠度的偏差分析,探究了不同测点布置以及不同模态阶次对预测模态挠度的影响。结果表明:在冲击激励下,无论是采用跨中及四分之一跨共18个测点方案,还是仅跨中9个测点方案,都能够准确识别到桥梁前3阶模态参数且预测的模态挠度偏差均低于5%,满足工程精度的要求; 采用前3阶模态参数与采用前4阶模态参数预测的跨中模态挠度相同,即简支梁第2个纵向竖弯振型对跨中模态挠度的预测没有贡献; 从振动理论和测试方法上验证了基于模态测试和等效荷载可以实现简支梁刚度的快速评估,具有较好的实际工程应用价值。
Abstract:
Combining the modal test method without interrupting traffic with traditional reliable static load test methods, an equivalent load modal deflection test method for rapid stiffness evaluation of prefabricated simply supported beam bridges was proposed. Taking prefabricated simply supported hollow slab bridges as the research object, finite element models for undamaged and damaged states were established. The vertical acceleration of the designated measurement point of the main beam under impact excitation was extracted, the modal parameters of the bridge structure was identified and the displacement flexibility matrix of the main beam was predicted. According to Load Test Methods for Highway Bridge, the equivalent load for static load test was designed, and the measured modal deflection of the damaged bridge midspan under the equivalent load was determined. The deflection calibration coefficient was calculated based on the theoretical deflection of the finite element undamaged state, and the stiffness of the damaged bridge was quickly evaluated in combination with the specifications. Through the error analysis of the mid-span modal deflection and theoretical deflection of the bridge, the influence of different measurement point arrangements and different modal orders on the predicted modal deflection was explored. The results show that under impact excitation, whether using a total of 18 measurement points in the midspan and quarter span scheme or only 9 measurement points in the midspan scheme, the first three modal parameters of the bridge can be accurately identified and the predicted modal deflection error is less than 5%, meeting the requirements of engineering accuracy. Using the first three modal parameters is the same as using the first four modal parameters to predict the midspan modal deflection, that is, the second longitudinal vertical bending mode of a simply supported beam does not contribute to the prediction of midspan modal deflection. From the perspective of vibration theory and testing methods, it is demonstrated that rapid stiffness evaluation of simply supported beams can be achieved based on modal testing and equivalent loads, which has good practical engineering application value.

参考文献/References:

[1] 范立础.桥梁工程[M].3版.北京:人民交通出版社,2017.
FAN Lichu.Bridge engineering[M].3rd ed.Beijing:People's Communication Press,2017.
[2]《中国公路学报》编辑部.中国桥梁工程学术研究综述·2014[J].中国公路学报,2014,27(5):1-96.
Editorial Department of view on China's bridge engineering research:2014[J].China Journal of Highway and Transport,2014,27(5):1-96.
[3]顾 万.混凝土空心板梁桥铰缝损伤演变规律及评估技术研究[D].扬州:扬州大学,2020.
GU Wan.Research on hinge joint damage evolution rule and evaluation technology of concrete hollow slab girder bridge[D].Yangzhou:Yangzhou University,2020.
[4]马 辉.基于计算智能方法的简支梁桥损伤识别研究[D].长春:吉林大学,2010.
MA Hui.Research on the computational intelligence-based damage identification strategy for simply supported bridge[D].Changchun:Jilin University,2010.
[5]LIU H B,JIAO Y B,CHENG Y C,et al.Reduction of uncertainties for damage identification of bridge based on fuzzy nearness and modal data[J].Journal of Applied Mathematics,2012,2012:1-13.
[6]袁旭东,周 晶,黄 梅.基于静力位移及频率的结构损伤识别神经网络方法[J].哈尔滨工业大学学报,2005,37(4):488-490.
YUAN Xudong,ZHOU Jing,HUANG Mei.A method of structural damage identification using neural networks based on static displacements and natural frequencies[J].Journal of Harbin Institute of Technology,2005,37(4):488-490.
[7]张茵涛.在役预应力混凝土梁桥静载试验[J].铁道建筑,2018,58(3):28-30,38.
ZHANG Yintao.Static load test study on prestressed concrete girder bridge in service[J].Railway Engineering,2018,58(3):28-30,38.
[8]亓兴军,孙绪法,赵 越,等.基于环境激励的连续梁桥挠度评定方法研究[J].建筑科学与工程学报,2021,38(4):73-79.
QI Xingjun,SUN Xufa,ZHAO Yue,et al.Research on deflection evaluation method of continuous girder bridge based on environmental excitation[J].Journal of Architecture and Civil Engineering,2021,38(4):73-79.
[9]石永燕,王云莉.桥梁静荷载试验的安全加载算法[J].公路交通技术,2005,21(增):92-94.
SHI Yongyan,WANG Yunli.Safe loading algorithm for bridge static load test[J].Technology of Highway and Transport,2005,21(S):92-94.
[10]CATBAS F N,BROWN D L,AKTAN A E.Use of modal flexibility for damage detection and condition assessment:case studies and demonstrations on large structures[J].Journal of Structural Engineering,2006,132(11):1699-1712.
[11]CATBAS F N,BROWN D L,AKTAN A E.Parameter estimation for multiple-input multiple-output modal analysis of large structures[J].Journal of Engineering Mechanics,2004,130(8):921-930.
[12]邹兰林.基于实测数据库修正的板桥动力综合评定系统研究[D].西安:长安大学,2008.
ZOU Lanlin.Study on dynamic comprehensive evaluation system of plate bridge based on test data base updating[D].Xi'an:Chang'an University,2008.
[13]TIAN Y D.Flexibility identification and deflection prediction of a three-span concrete box girder bridge using impacting test data[J].Engineering Structures,2017,146:158-169.
[14]TIAN Y D.Structural scaling factor identification from output-only data by a moving mass technique[J].Mechanical Systems and Signal Processing,2019,115:45-59.
[15]ZHANG J,ZHANG Q Q,GUO S L,et al.Structural identification of short/middle span bridges by rapid impact testing:theory and verification[J].Smart Materials and Structures,2015,24(6):065020.
[16]林贤坤,张令弥,郭勤涛,等.基于模态挠度法的预应力连续箱梁桥状态评估[J].土木工程学报,2010,43(10):83-90.
LIN Xiankun,ZHANG Lingmi,GUO Qintao,et al.Application of modal deflection method for condition assessment of prestressed concrete continuous box-girder bridges[J].China Civil Engineering Journal,2010,43(10):83-90.
[17]林贤坤,覃柏英,张令弥,等.基于不中断交通运行模态分析的模态挠度法在桥梁状态评估中的应用[J].振动与冲击,2013,32(14):52-57,76.
LIN Xiankun,QIN Boying,ZHANG Lingmi,et al.Application of modal deflection method in condition assessment of a bridge based on operational modal analysis without interrupting traffic[J].Journal of Vibration and Shock,2013,32(14):52-57,76.
[18]阳 洋,MOSALAM K M,金国芳,等.基于改进直接刚度法的加州某桥梁结构损伤评估研究[J].工程力学,2012,29(1):114-120,140.
YANG Yang,MOSALAM K M,JIN Guofang,et al.Research on damage evaluation of highway bridge structure in California using improved direct stiffness method[J].Engineering Mechanics,2012,29(1):114-120,140.
[19]蒋友宝,刘 扬,张建仁.既有RC拱肋基于全过程刚度变化规律的承载能力预测[J].计算力学学报,2012,29(4):532-537.
JIANG Youbao,LIU Yang,ZHANG Jianren.Evaluation of load bearing capacity based on law of stiffness changes in full process for existing RC arch rib[J].Chinese Journal of Computational Mechanics,2012,29(4):532-537.
[20]赵发强.基于荷载试验的装配式简支梁桥工作性能评估研究[D].北京:北京交通大学,2019.
ZHAO Faqiang.Research on performance evaluation of prefabricated simply supported beam bridge based on load test[D].Beijing:Beijing Jiaotong University,2019.

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备注/Memo

备注/Memo:
收稿日期:2021-08-11
基金项目:山东省交通运输厅科技计划项目(2020B69); 山东省高等学校土木结构防灾减灾协同创新中心项目(XTM201904)
作者简介:亓兴军(1974-),男,工学博士,教授,硕士生导师,E-mail:qxj123@163.com。
更新日期/Last Update: 2023-07-01