Controlled Substructure Identification for Structural Health Monitoring of Shear Structures
Structuralcontrol (SC) systems are usually utilized to reduce excessive structural responses during natu ral disasters.In this paper, a new functionality of SC systems, improving the accuracy of structural health monitoring (SHM) of the structure, is exploited, which provides a full utilization of the control system (sen sors and control devices) and, thereby, improve the cost efficiency of installed control system.In the authors previous studies, a substructure identification method was proposed to iteratively identify the struc tural parameters (story stiffness and damping coefficients) of a shear building from top to bottom.An identi fication error analysis showed that the identification accuracy can be improved by changing the responses of the identified substructure in a certain way.Based on this result, a controlled substructure identification method is proposed to achieve the above goal of structural response changes.Moreover, an additional analy sis is carried out, which shows that the proposed controlled substructure identification method is robust to noises of measured structural responses.A numerical example with a five-story shear structure, with an ac tive mass driver (AMD) system installed at the top, is used to show the efficacy of this method, giving nota ble improvements in the estimation accuracy and robust to measurement noise of structural responses.
Dongyu Zhang Hui Li
School of Civil Engineering, Harbin Institute of Technology, Harbin, China
国际会议
哈尔滨
英文
646-651
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）