지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.25 No.1
- 발행연도
- 2020.1
- 수록면
- 111 - 122 (12page)
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초록· 키워드
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Researchers up to date have introduced several Structural Health Monitoring (SHM) techniques with varying advantages and drawbacks for each. Satellite positioning systems (GPS, GLONASS and GALILEO) based techniques proved to be promising, especially for high natural period structures. Particularly, the GPS has proved sufficient performance and reasonable accuracy in tracking real time dynamic displacements of flexible structures independent of atmospheric conditions, temperature variations and visibility of the monitored object. Tall structures are particularly sensitive to oscillations produced by different sources of dynamic actions; such as typhoons. Wind forces induce in the structure both longitudinal and perpendicular displacements with respect to the wind direction, resulting in torsional effects, which are usually more complex to be detected. To efficiently track the horizontal rotations of the in-plane sections of such flexible structures, two main issues have to be considered: a suitable sensor topology (i.e., location, installation, and combination of sensors), and the methodology used to process the data recorded by sensors. This paper reports the contributions of the measurements recorded from dual frequency GPS receivers and uni-axial accelerometers in a full-scale experimental campaign. The Canton tower in Guangzhou-China is the case study of this research, which is instrumented with a long-term structural health monitoring system deploying both accelerometers and GPS receivers. The elaboration of combining the obtained rather long records provided by these two types of sensors in detecting the torsional behavior of the tower under ambient vibration condition and during strong wind events is discussed in this paper. Results confirmed the reliability of GPS receivers in obtaining the dynamic characteristics of the system, and its ability to capture the torsional response of the tower when used alone or when they are combined with accelerometers integrated data.
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참고문헌 (29)
참고문헌 신청
AlSaleh, R. / 2011 / Verification of wind pressure and wind induced response of a supertall structure using a long-term structural health monitoring system
AlSaleh, R. / 2009 / Detecting the torsional behavior of a tall building by GPS receivers / Proceedings of the COMPDYN 2009, ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Fabio Casciati / 2009 / Engineering vibration monitoring by GPS: long duration records / Earthquake Engineering and Engineering Vibration 8(3):459~467
Fabio Casciati / 2011 / Monitoring a steel building using GPS sensors / Smart Structures and Systems, An International Journal 7(5):349~363
Casciati, F. / 2009 / GPS-Based SHM of a tall building : torsional effects / Proceedings of the 7th International Workshop on Structural Health Monitoring 2009 :340~347
AlSaleh, R. / 2009 / Detecting the torsional behavior of a tall building by GPS receivers / Proceedings of the COMPDYN 2009, ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Fabio Casciati / 2009 / Engineering vibration monitoring by GPS: long duration records / Earthquake Engineering and Engineering Vibration 8(3):459~467
Fabio Casciati / 2011 / Monitoring a steel building using GPS sensors / Smart Structures and Systems, An International Journal 7(5):349~363
Casciati, F. / 2009 / GPS-Based SHM of a tall building : torsional effects / Proceedings of the 7th International Workshop on Structural Health Monitoring 2009 :340~347
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