Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
基于位移影响线曲率的小半径弯桥损伤识别
孙珂, 张延庆
北京工业大学建筑工程学院,北京 100124
Damage identification of small radius curved bridge based on curvature of displacement influence line
SUN Ke, ZHANG Yan qing
College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
 全文: PDF(965 KB)   HTML
摘要：

为了获取尽量全面的数据和减少对初始数据的依赖,在拟静力状态下测得弯梁桥竖向位移影响线（DIL）,通过二次差分获得影响线的曲率.结合缺口平滑技术构造损伤指标,来实现对该类结构的损伤识别.以某三跨小半径弯梁桥为研究对象,建立相关数值模型来验证该方法的正确性及特点；对低速加载、支座预偏心及抗扭支座布置等对识别结果的影响进行分析.结果表明：对于小半径弯梁桥,该方法利用较少的测点,不依赖损伤前的数据,适用于多损伤识别；控制加载速度在一定范围内可以满足对损伤定位的需求；支点预偏心、设立抗扭支承等构造措施对损伤定位没有影响,损伤指标数值相对变小.
Abstract:

The vertical displacement influence line (DIL) of curved bridge at measuring point was measured in pseudo static state in order to obtain as much as possible comprehensive data and reduce the demand of initial data. Curvature was calculated by the second order difference of DIL. Then a damage index was defined based on the gapped smoothing method. The validity of the method was verified by the relevant numerical model with a three span small radius curved bridge as the background. The effects of the slow loading, bearing eccentricity, torsional bearing spacing and other factors on the damage identification were analyzed. Results show that for the small radius curved bridge, the method with less measuring points is suitable for multi damage identification that does not depend on the initial data. The damage location can be realized under a certain range of the loading speed. The measures such as bearing eccentricity, torsional bearing have no effect on the damage location, but the values of damage index are smaller.
出版日期: 2016-04-01
:  U 441  
基金资助:

国家自然科学基金面上项目（51378034）.
通讯作者: 张延庆,男,教授,博导. ORCID: 0000 0002 7635 9517.     E-mail: zhyq@bjut.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

孙珂, 张延庆. 基于位移影响线曲率的小半径弯桥损伤识别[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.04.018.

SUN Ke, ZHANG Yan qing. Damage identification of small radius curved bridge based on curvature of displacement influence line. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.04.018.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.04.018    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I4/727

［1］ 邵容光,夏淦.混凝土弯梁桥［M］.北京:人民交通出版社,1994: 16-49.
［2］ 向天宇,赵人达,刘海波.基于静力测试数据的预应力混凝土连续梁结构损伤识别［J］.土木工程学报, 2003,36(11): 79-82.
XIANG Tian yu, ZHAO Ren da, LIU Hai bo. Identification methods for different structural damage based on frequency response ［J］. China Civil Engineering Journal, 2003, 36(11): 79-82.
［3］ 谢峻,韩大建.一种改进的基于频率测量的结构损伤识别方法［J］.工程力学,2004, 21(1)： 22-26.
XIE Jun, HAN Da jian. An improved method for structure damage detection based on frequency measurement ［J］. Engineering Mechanics, 2004,21(1)： 22-26.
［4］ 刘宇飞,辛克贵.移动荷载激励下基于平均曲率模态的简支梁局部损伤识别［J］.工程力学, 2013, 30(7): 205-211.
LIU Yu fei, XIN Ke gui. Local damage detection of simply supported beam on the excitation of moving load based on average curvature modal ［J］. EngineeringMechanics, 2013,30(7)： 205-211.
［5］ 荆龙江,项贻强.基于柔度矩阵法的大跨斜拉桥主梁的损伤识别［J］.浙江大学学报：工学版, 2008, 42(1): 164-169.
JING Long jiang, XIANG Yi qiang. Damage identification of main girders for long span cable stayed bridge based on flexibility matrix ［J］. Journal of Zhejiang University: Engineering Science, 2008,42(1): 164-169.
［6］ 杜永峰,刘云帅,王晓琴.基于挠度差值影响线曲率的简支梁桥损伤识别［J］.桥梁建设,2009, 38(4): 80-83.
DU Yong feng, LIU Yun shuai, WANG Xiao qin. Damage identification of simply supported beam bridges based on influence line curvature of deflection differential values ［J］. Bridge Construction, 2009, 38(4)： 80-83.
［7］ ZHU S Y, CHEN Z W, CAI Q L, et al. Locate damage in long span bridges based on stress influence lines and information fusion technique ［J］. Advances in Structural Engineering, 2014, 17(8): 1089-1102.
［8］ FUCHS P A, WASHER G A, CHASE S B, et al.Laser based instrumentation for bridge load testing ［J］. Journal of Performance of Constructed Facilities, 2004, 18(4): 213-219.
［9］ ROBERTS G W, MENG X, DODSON A H. Integrating a global positioning system and accelerometers to monitor the deflection of bridges ［J］. Journal of Bridge Engineering, 2004, 130(2): 65-72.
［10］ HUANG J, SHENTON H W. Experimentally determined continuous displacement influence lines for bridges ［C］∥Structures Congress 2008: Crossing Borders. Vancouver: ASCE, 2008: 110.
［11］ 孙全胜,李茂奇.小半径曲线桥抗扭性能静载试验研究［J］.公路,2009, 50(12): 43-47.
SUN Quan sheng, LI Mao qi. Study of static load test and torsional properties of small radius curve bridge ［J］. Highway, 2009, 50(12): 43-47.
［12］ RATCLIFFE C P. Damage detection using a modified Laplacian operator on mode shape data ［J］. Journal of Sound and Vibration, 1997, 204(3): 505-517.
［13］ 李永梅,周锡元,高向宇,等.柔度曲率法对梁结构的损伤诊断［J］.北京工业大学学报, 2008, 34(11): 11731178.
LI Yong mei, ZHOU Xi yuan, GAO Xiang yu, et al. Damage diagnosis of beam structures by flexibility curvature method ［J］. Journal of Beijing University of Technology, 2008, 34 (11): 1173-1178.
［14］ 滕军,胡渝,郭时安,等.高墩小半径曲线梁桥支点预偏心时力学性能分析［J］.工程抗震与加固改造,2009,31(2): 9-15.
TENG Jun, HU Yu, GUO Shi an, et al. Mechanical characteristics analysis of small radius curve beam bridge with pivots pre eccentricity with high piers ［J］. Earthquake Resistant Engineering and Retrofitting, 2009, 31(2): 9-15.
[1] 李明, 刘扬, 唐雪松. 疲劳裂纹的跨尺度分析[J]. 浙江大学学报(工学版), 2017, 51(3): 524-531.
[2] 廖小伟, 王元清, 宗亮, 施刚. 基于有效缺口应力法的钢桥焊接细节疲劳分析[J]. 浙江大学学报(工学版), 2017, 51(1): 1-8.
[3] 肖新辉,鲁乃唯, 刘扬. 随机车流下公路钢桥疲劳可靠度分析[J]. 浙江大学学报(工学版), 2016, 50(9): 1777-1783.
[4] 蒋正文, 万水, 李明鸿, 马磊. 结构可靠度分析中的混合模拟法及应用[J]. 浙江大学学报(工学版), 2015, 49(4): 782-791.
[5] 狄生奎, 文铖, 叶肖伟. 正交异性钢桥面板结构热点应力有限元分析[J]. 浙江大学学报(工学版), 2015, 49(2): 225-231.
[6] 丁勇, 谢旭, 苟昌焕, 黄剑源. 钢桥交通振动计算方法与动力特性研究[J]. J4, 2012, 46(6): 1107-1114.
[7] 郭增伟,葛耀君,卢安平. 竖弯涡振控制的调谐质量阻尼器TMD参数优化设计[J]. J4, 2012, 46(1): 8-13.
[8] 俞亚南, 张巍, 申永刚. 大体积承台混凝土早期表面开裂控制措施[J]. J4, 2010, 44(8): 1621-1628.