基于振型转角改变的框架梁损伤检测研究

摘要
图/表
参考文献(15)
相关文章 (15)

全文: PDF (1198 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了检测框架梁的损伤，提出了一种基于梁柱节点振型转角改变的框架梁损伤识别方法。首先，对框架结构梁柱节点振型平移和振型转角进行敏感性分析，得到振型平移和振型转角的敏感性系数。然后，根据损伤前后梁柱节点的振型转角变化初步判别损伤梁的位置。接着，以敏感性分析结果为基础，通过迭代计算获得修正后梁柱节点振型转角改变值。最后，根据修正振型转角改变值识别结构损伤位置和损伤程度。一五层三跨框架的数值算例验证了该方法的有效性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：损伤检测, 框架结构, 敏感性分析, 迭代算法

Abstract：In order to detect damages of frame beams, a method based on changes in mode rotary angles of beam-column nodes was proposed.Firstly, sensitivity analysis was conducted for mode displacements and rotary angles of frame beams and their sensitivity coefficients were derived.Then, locations of damaged beams were primarily determined according to changes in mode rotary angles of beam-column nodes before and after damage.Furthermore, based on the results of sensitivity analysis, change values in mode rotary angles of beam-column nodes were modified using the iterative algorithm.Finally, locations and levels of damage were identified based on the modified changes in mode rotary angles of beam-column nodes.The validity of the proposed method was verified using a numerical example of a 5-story 3-span frame.

Key words： damage detection frame structure sensitivity analysis iterative algorithm

收稿日期: 2017-12-26 出版日期: 2018-12-28

引用本文:

李林 1,袁艺宸 2. 基于振型转角改变的框架梁损伤检测研究[J]. 振动与冲击, 2019, 38(1): 180-186.
LI Lin 1 YUAN Yichen 2. Study on damage detection for the beams of frame structures using the changes in the mode shape rotational angles of beam-column nodes. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(1): 180-186.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I1/180

[1] DAS S, SAHA P, PATRO S K. Vibration-based damage detection techniques used for health monitoring of structures: a review [J]. Journal of Civil Structural Health Monitoring, 2016, 6(3): 477-507.
[2] 闫桂荣, 段忠东, 欧进萍. 基于结构振动信息的损伤识别研究综述 [J]. 地震工程与工程振动, 2007, 27(3): 95-103.
YAN G R, DUAN Z D, OU J P. Review on structuraldamage detection based on vibration data[J].Journal of Earthquake Engineering and Engineering Vibration, 2007, 27(3): 95-103.
[3] HU S-L J, WANG S, LI H. Cross-modal strain energy method for estimating damage severity [J]. J Eng Mech, 2006, 132(4): 429-437.
[4] ROY K, RAY-CHAUDHURI S. Fundamental mode shape and its derivatives in structural damage localization [J]. Journal of Sound and Vibration, 2013, 332(21): 5584-5593.
[5] GHOSH G, RAY-CHAUDHURI S. Location sensitivity of fundamental and higher mode shapes in localization of damage within a building [J]. Journal of Sound and Vibration, 2016, 365: 244-259.
[6] KOO K Y, SUNG S H, PARK J W, et al. Damage detection of shear buildings using deflections obtained by modal flexibility [J]. Smart Materials and Structures, 2010, 19(11): 115026: 1-10.
[7] KOO K Y, SUNG S H, JUNG H J. Damage quantification of shear buildings using deflections obtained by modal flexibility [J]. Smart Materials and Structures, 2011, 20(4): 045010: 1-9.
[8] SUNG S H, KOO K Y, JUNG H Y, et al. Damage-induced deflection approach for damage localization and quantification of shear buildings: validation on a full-scale shear building [J]. Smart Materials and Structures, 2012, 21(11): 115013: 1-10.
[9] ZHU H, LI L, HE X-Q. Damage detection method for shear buildings using the changes in the first mode shape slopes [J]. Computers & Structures, 2011, 89(9-10): 733-743.
[10] MEYDAN T. Recent trends in linear and angular accelerometers [J]. Sensors and Actuators a-Physical, 1997, 59(1-3): 43-50.
[11] WASSERMANN J, LEHNDORFER S, IGEL H, et al. Performance Test of a Commercial Rotational Motions Sensor [J]. Bulletin of the Seismological Society of America, 2009, 99(2B): 1449-1456.
[12] ABDO M A B, HORI M. A numerical study of structural damage detection using changes in the rotation of mode shapes [J]. Journal of Sound and Vibration, 2002, 251(2): 227-239.
[13] KOKOT S, ZEMBATY Z. Vibration based stiffness reconstruction of beams and frames by observing their rotations under harmonic excitations - Numerical analysis [J]. Engineering Structures, 2009, 31(7): 1581-1588.
[14] 尹涛, 尹孟林. 基于特征波导纳法和敏感性分析的大型周期支撑结构损伤识别 [J]. 振动与冲击, 2017, 36(22): 93-99.
YIN T, YIN M L. Damage detection in large periodically-supported structures based on the characteristic receptance method and sensitivity-based approach. Journal of Vibration and Shock, 2017, 36(22): 93-99.
[15] 翁顺, 左越, 朱宏平, 等. 基于子结构的有限元模型修正方法 [J]. 振动与冲击, 2017, 36(4): 99-104.
Weng S, Zuo Y, Zhu H P, et al. Model updating based on substructuring method. Journal of Vibration and Shock, 2017, 36(4): 99-104.
[16] CHA Y-J, BUYUKOZTURK O. Structural Damage Detection Using Modal Strain Energy and Hybrid Multiobjective Optimization [J]. Computer-Aided Civil and Infrastructure Engineering, 2015, 30(5): 347-358.