|Table of Contents|

[1] Li Pengfei, An Xuehui, He Shiqin, Chen Chen, et al. Experimental study on mechanical propertiesof dowel bar embedded in concrete under fatigue loads [J]. Journal of Southeast University (English Edition), 2016, 32 (4): 445-450. [doi:10.3969/j.issn.1003-7985.2016.04.009]
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Experimental study on mechanical propertiesof dowel bar embedded in concrete under fatigue loads()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
32
Issue:
2016 4
Page:
445-450
Research Field:
Civil Engineering
Publishing date:
2016-12-20

Info

Title:
Experimental study on mechanical propertiesof dowel bar embedded in concrete under fatigue loads
Author(s):
Li Pengfei1 An Xuehui1 He Shiqin2 Chen Chen2
1State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
2School of Civil Engineering, North China University of Technology, Beijing 100144, China
Keywords:
dowel action fatigue loads fatigue failure mode fatigue life attenuation character
PACS:
TU312
DOI:
10.3969/j.issn.1003-7985.2016.04.009
Abstract:
To investigate the mechanical properties of a dowel action under fatigue loads, nine reinforced concrete specimens were fabricated, and the monotonic and fatigue loadings were performed on these specimens, respectively. All of these specimens were divided into two series. Six specimens in Series Ⅰ with different bar diameters of 12, 20 and 25 mm were subjected to monotonic loads and were used to confirm the ultimate bearing capacity. The remaining three specimens in Series Ⅱ were subjected to fatigue loads and were designed to investigate the attenuation character of dowel action and the fatigue failure modes. The test results show that the accumulated fatigue damage due to fatigue loads can reduce the ultimate bearing capacity of specimens. With the increase in fatigue loads, the failure mode can transform to fatigue rupture of the dowel bar under the serviceability loading state, i.e. 55% of the monotonic capacity. The fatigue life is determined by the fatigue properties of steel and concrete. Based on the test data, the failure process of dowel action can be divided into two stages: the accumulation of fatigue damage and the fatigue rupture of dowel bar.

References:

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Memo

Memo:
Biographies: Li Pengfei(1986—), male, graduate; An Xuehui(corresponding author), male, doctor, professor, anxue@tsinghua.edu.cn.
Foundation items: The Fund of the National Key Laboratory in China(No.2015-Ky-01), the National Key Technology R& D Program of China(No.2015BAB07B07).
Citation: Li Pengfei, An Xuehui, He Shiqin, et al. Experimental study on mechanical properties of dowel bar embedded in concrete under fatigue loads[J].Journal of Southeast University(English Edition), 2016, 32(4):445-450.DOI:10.3969/j.issn.1003-7985.2016.04.009.
Last Update: 2016-12-20