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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.20 No.1
- 발행연도
- 2017.1
- 수록면
- 11 - 22 (12page)
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초록· 키워드
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The long-term effect of ambient temperature on bridge strain is an important and challenging problem. To investigate this issue, one year data of strain and ambient temperature of a long-span cable-stayed bridge is studied in this paper. The measured strain-time history is decomposed into two parts to obtain the strains due to vehicle load and temperature alone. A linear regression model between the temperature and the strain due to temperature is established. It is shown that for every 1C increase in temperature, the stress is increased by 0.148 MPa. Furthmore, the extreme value distributions of the strains due to vehicle load, temperature and the combination effect of them during the remaining service period are estimated by the average conditional exceedance rate approach. This approach avoids the problem of declustering of data to ensure independence. The estimated results demonstrate that the 95% quantile of the extreme strain distribution due to temperature is up to 1.488 X10-4 which is 2.38 times larger than that due to vehicle load. The study also indicates that the estimated extreme strain can reflect the long-term effect of temperature on bridge strain state, which has reference significance for the reliability estimation and safety assessment.
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참고문헌 (27)
참고문헌 신청
Branco, F. A. / 1993 / Thermal actions for concrete bridge design / J. Struct. Eng. -ASCE 119(8):2313~2331
Catbas, F. N. / 2008 / Structural health monitoring and reliability estimation : long span truss bridge application with environmental monitoring data / Eng. Struct 30(9):2347~2359
Chen, G. D. / 2012 / A signal decomposition theorem with Hilbert transform and its application to narrowband time series with closely spaced frequency components / Mech. Syst. Signal Pr 28(2):258~279
Ding, J. / 2014 / Assessment of methods for extreme value analysis of non-Gaussian wind effects with shortterm time history samples / Eng. Struct 80:75~88
Duan, Y. F. / 2010 / Correlation analysis of structural stress responses and temperature of a tied arch bridge using long-term health monitoring data / Proceedings of the 6th International Conference on Arch Bridges
Catbas, F. N. / 2008 / Structural health monitoring and reliability estimation : long span truss bridge application with environmental monitoring data / Eng. Struct 30(9):2347~2359
Chen, G. D. / 2012 / A signal decomposition theorem with Hilbert transform and its application to narrowband time series with closely spaced frequency components / Mech. Syst. Signal Pr 28(2):258~279
Ding, J. / 2014 / Assessment of methods for extreme value analysis of non-Gaussian wind effects with shortterm time history samples / Eng. Struct 80:75~88
Duan, Y. F. / 2010 / Correlation analysis of structural stress responses and temperature of a tied arch bridge using long-term health monitoring data / Proceedings of the 6th International Conference on Arch Bridges
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