Experimental study on bridge–track system temperature actions for Chinese high-speed railway

• Autorzy: Lou P. , Zhu J. , Dai G. , Yan B.

Identyfikatory

DOI

org/10.1016/j.acme.2017.08.006

• Języki publikacji: EN

Abstrakty

EN

Atmospheric temperature and directed solar radiation have a significant effect on the temperature field of high-speed railway (HSR) concrete bridge and ballastless track structure. However, temperature actions are random process of which distribution laws are difficult to explore, and existing statistical methods for structure temperature analysis are still not precise. So far, there are few researches for annual temperature spectra and design codes for bridge–track system. Based on the one-year observation data, this paper investigated the temperature actions for Chinese HSR bridge–track structure. By utilizing reliability high moment theory, a statistical method which could built virtual distribution was put forward. Based on the renewed study, the effects of waterproof for deck were taken into consideration, a temperature action model was proposed which is suitable for both bridge and track structure. In addition, for track structure, the previous temperature load models were modified. Apart from that, by proposing the concepts of temperature uniform and fluctuant spectra, the research evaluated service performance of structure. Finally, the distribution regularities of uniform temperature spectra were fitted by Fourier series, and the relationship between structural and atmospheric uniform temperature was established (formula (25)). As a result, according to 50 years recorded atmospheric temperature data, the prediction model of the structure extreme temperature was suggested, and by taking the recurrence interval of 100, 150 and 300 years, the extreme temperatures of the system are 52.23, 54.34 and 57.77 °C.

Słowa kluczowe

EN

high-speed railway; bridge–ballastless track structur; temperature action; experimental study

PL

szybka kolej; badania eksperymentalne; temperatura

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 2
• Strony: 451--464
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Lou P.

• School of Civil Engineering, Central South University, China

autor

Zhu J.

• School of Civil Engineering, Central South University, China

autor

Dai G.

• School of Civil Engineering, Central South University, China

autor

Yan B.

• School of Civil Engineering, Central South University, China

Bibliografia

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• [3] European Committee for Standardization 2003 Euro Code 1: Actions on Structure on Bridges, 2003.
• [4] British Standards Institution, BS 5400. Steel, Concrete and Composite Bridges, Part 2: Specification for Loads, 1978.
• [5] TB10621-2009, Code for Design of High Speed Railway, China Railway Publishing House, Beijing, 2009.
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• [16] GB/T 50283-1999, Unified Standard for Reliability Design of Highway Engineering Structures, China Planning Press, Beijing, 1999.
• [17] GB 50068-2001, Unified Standard for Reliability Design of Building Structures, China Architecture & Building Press, Beijing, 2002.
• [18] Y.-G. Zhao, Z.-H. Lu, Cubic normal distribution and its significance in structural reliability, Struct. Eng. Mech. 28 (3) (2008) 263–280.
• [19] Y.-G. Zhao, T. Ono, New point estimates for probability moments, J. Eng. Mech. 4 (2000) 433–436.
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• [21] DIN Report 101: The Loads of Bridge, Institute of Standardization Research, Germany, 2003.
• [22] C. Metzner, C. Mark, J. Steinwachs, et al., Superstatistical analysis and modeling of heterogeneous random walks, Nat. Commun. (2015), http://dx.doi.org/10.1038/ncomms8516.
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)