[1]马中军,谈志诚,张 铟.混凝土桥梁应变的区间型预警阈值设定[J].西安建筑科技大学学报:自然科学版,2013,(04):526-532.[doi:10.15986/j.1006-7930.2013.04.011]
 MA Zhong-jun,TAN Zhi-cheng,ZHANG Yin.Interval strain threshold setting method for early warning of concrete bridge[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,(04):526-532.[doi:10.15986/j.1006-7930.2013.04.011]
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混凝土桥梁应变的区间型预警阈值设定()
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西安建筑科技大学学报:自然科学版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2013年04期
页码:
526-532
栏目:
出版日期:
2013-08-31

文章信息/Info

Title:
Interval strain threshold setting method for early warning of concrete bridge
文章编号:
1006-7930(2013)04-0526-07
作者:
马中军12谈志诚2张 铟2
(1.武汉理工大学,湖北 武汉 430070;2.南阳理工学院,河南 南阳 473004)
Author(s):
MA Zhong-jun12TAN Zhi-cheng2ZHANG Yin2
(1.Wuhan University of Technology, Wuhan 430070,China; 2.Nanyang Institute of Technology, Nanyang 473004,China)
关键词:
混凝土应变区间阈值t分布
Keywords:
concrete strain interval threshold t distribution
分类号:
TU997
DOI:
10.15986/j.1006-7930.2013.04.011
文献标志码:
A
摘要:
在桥梁健康监测系统的预警模块中,如何设定合理的应变监测阈值还有待做进一步的研究.考虑混凝土自身的离散性,提出了一种针对混凝土桥梁的区间型应变阈值的设定方法.由于实际中一般难以获取大量的弹性模量数据样本,需要专门考虑对弹性模量代表值的小样本分析问题.为此,首先引入t分布来对弹性模量的均值进行区间估计,以置信区间作为弹性模量的取值.然后分别以区间的两个端点值作为弹性模量的取值,对结构进行有限元分析,可得到各测点处应变的边界值,即可得到应变预警的区间型阈值.数值模拟算例验证了方法的有效性.基于区间型的应变阈值,可实现多级预警,确保桥梁安全.
Abstract:
How to set proper strain threshold in the early warning module of bridge health monitoring system still remains a subject to be studied. Considering the discreteness of concrete, a novel interval strain threshold setting method for concrete bridges has been proposed in this paper. In practice, it is very difficult to obtain large amounts of elastic modulus data sample, so the small sample analysis of elastic modulus representative value is necessary. For this purpose, t distribution is introduced to carry out interval estimation for the mean value of elastic modulus firstly. A confidence interval can be obtained and used as the representative value of elastic modulus. By employing the end values of this interval, strain of each measurement point can be calculated by the finite element method respectively and used as boundary values. Subsequently, the interval strain threshold for the early warning can be obtained. Numerical simulation example shows that reasonable interval threshold can be obtained by the method proposed in this paper. Based on the interval strain threshold, multiple level early warning can be actualized and then the safety of bridge can be ensured well

参考文献/References:

[1] ANDERSEN E Y, PEDERSEN L.Structural monitoringofthe Great Belt East Bridge [C]//Straitcrossings, Rot-terdam: Balkema, 1994:189-195.
[2] KIM S, CHANG S P, LEEJ.Autonomous on-line health monitoringsystemforacable-stayed bridge [C]//Pro-ceedings of the 1st European workshop on structural health monitoring, Lancaster(PA): DEStech: 2002:1254-
1261.
[3] LAU C K, MAK W P N, WONG K Y, et al.Structural health monitoring of three cable-supported bridges inHong Kong [J].Structural Health Monitoring, 1999:450-460.
[4] 张 敏, 杨志芳, 朱利明 . 东海大桥桥梁结构健康监测系统研究与设计 [J]. 桥梁建设,2006(2):67-70.
ZHANG Min, YANG Zhi-fang, ZHU Li-ming.Researchanddesignof Bridge Structure Health Monitoring Systemfor Donghai Bridge [J].Bridge Construction, 2006(2):67-70.
[5] 符欲梅, 朱 永, 陈伟民, 等. 大佛寺长江大桥远程状态监测系统开发及实现 [J]. 公路,2005(12):105-110.
FU Yu-mei, ZHU Yong, CHEN Wei-min, etal.Developmentandrealizationofstateremote monitoringsystemforDafosi Bridgeover Yangtzeriver [J].Highway, 2005(12):105-110.
[6] 李爱群, 缪长青, 李兆霞. 润扬长江大桥结 构健 康 监 测 系 统 研 究 [J]. 东 南 大 学 学 报: 自 然 科 学 版,2003, 33(5):544-548.
LI Ai-qun, MIAO Chang-qing, LI Zhao-xia.Health monitoringsystemforthe Runyang Yangtse River Bridge [J].Journal of Southeast University: Natural Science Edition, 2003, 33(5): 544-548.
[7] 董学武, 张宇峰, 徐 宏, 等. 苏通大桥结构健康监测及安全评价系统简介 [J]. 桥梁建设,2006(4):71-74.
DONG Xue-wu, ZHANG Yu-feng, XU Hong, etal.Structural health monitoring andsafetyevaluationsystemforSutong Bridge [J].Bridge Construction, 2006(4):71-74.
[8] 严 斌, 杨孚衡, 苏木标. 芜湖长江大桥长期健康监测系统 [J]. 铁道建筑,2005(6):29-31.
YAN Bin, YANG Fu-heng, SU Mu-biao.Long-termhealth monitoringsystemof Wuhu Yangtse River Bridge [J].Railway Construction, 2005(6):29-31.
[9] 谭永朝, 郑翰献, 俞菊虎, 等. 钱江四桥桥梁实时健康监测系统开发研究 [J]. 公路交通科技,2004(11):43-46.
TAN Yong-chao, ZHENG Han-xia, YUJu-hu, etal.Developmentandresearchonarealtimestructuralhealth mo-nitoringsystemforthe4th Qian-tang River Bridge [J].Journal of Highwayand Transportation Research and De-velopment, 2004(11):43-46.
[10] 张少锦 , 刘文峰, 张太科, 等. 珠江黄埔大桥结构 健 康 与 安 全 监 测 系 统 测 点 与 测 试 方 法 设 计 [J]. 桥 梁 建 设,2008(1):73-76.
ZHANG Shao-jin, LIU Wen-feng, ZHANG Tai-ke, et al.Design of Testing Points and Testing Methods forStructural HealthandSafety MonitoringSystemof Huangpu BridgeoverZhujiang River [J].Bridge Construction.2008(1):73-76.
[11] 韩之江, 杨建红. 桥梁健康监测技术的研究与实施 [J]. 公路,2008(3):51-56.
HAN Zhi-jiang, YANGJian-hong.Studyand application of bridge health monitoringtechnology [J].Highway,2008(3):51-56.
[12] 王真之, 王晓东 , 周 宇, 等. 一种新型的桥梁结构健康远程监控系统 [J]. 计算机应用研究,2008(2):637-640.
WANG Zhen-zhi, WANG Xiao-dong, ZHOU Yu, etal.Novelsystemfor bridgestructure healthremote monito-ring [J].Application Researchof Computers.2008(2):637-640.
[13] 樊叶华, 陈雄飞, 张宇峰, 等. 基于光纤光栅传感技 术的江阴大桥结构应变监测研究 [J]. 交通运 输 工 程 与 信 息学报 ,2011, 9(1):78-83.
FAN Ye-hua, CHEN Xiong-fei, ZHANG Yu-feng, etal.Strain MonitoringofJiangyin Bridge Main Girder Struc-ture Based on Fiber Bragg Grating Sensing Technology [J].Journal of Transportation Engineering andInforma-tion, 2011, 9(1): 78-83.
[14] 邱法维, 杜文博, 钱稼茹, 等. 虎门大桥应变监测数据处理系统设计 [J]. 桥梁建设, 2003(2):66-69.
QIU Fa-wei, DU Wen-bo, QIAN Jia-ru, et al.Design of strain monitoring data processing system for HumenBridge [J].Bridge Construcion, 2003(2): 66-69.
[15] 谢海龙. 桥梁健康监测中的应力数据分析 [J]. 公路交通科技: 应用技术版, 2011(5):1-3.
XIE Hai-long.Stressdataanalysisinthebridgehealth monitoring [J].Journalof Highwayand Transportation Re-searchand Development:Application Technology Edition, 2011(5):1-3.
[16] 张开洪, 张奔牛, 闫 果, 等. 大跨 度 连 续 刚 构 桥 梁 应 力 ? 挠 度 和 裂 缝 实 时 监 测 系 统 研 究 [J]. 重 庆 交 通 大 学 学报: 自然科学版,2010, 29(4):521-525.
ZHANG Kai-hong, ZHANG Ben-niu, YAN Guo, etal.Researchonstress,deflectionandcrack monitoringsystemoflong-spancontinuousrigid-frame bridge [J].Journal of ChongqingJiaotong University:Natural Science, 2010,29(4): 521-525.
[17] 王大勇 . 超声回弹综合法检测负温商品混凝土实体抗压强度研究 [J]. 建筑科学, 2012, 28(1): 42-44.
WANG Da-yong.Studyonthetestingofcompressivestrengthofnegativetemperature merchandiseconcretebyul-trasonic-reboundcombined method [J].Building Science, 2012, 28(1): 42-44.
[18] 郑 颖, 钱君燕, 冯玉瑚. 概率论与数理统计[M]. 上海: 中国纺织大学出版社, 1999.
ZHENG Ying, QIANJun-yan, FENG Yu-hu.Probabilitytheoryand mathematicalstatistics [M].Shanghai: Chi-na Textile University Press, 1999.

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备注/Memo

备注/Memo:
收稿日期:2012-09-05 修改稿日期:2013-07-27
基金项目:国家自然科学基金(50978151);河南省科技攻关项目(122102210165)
作者简介:马中军(1972-),女,河南南阳人,博士生,副教授;主要从事桥梁损伤识别、健康监测及评估等方面研究.
更新日期/Last Update: 2015-10-05