Experimental Research on Fatigue Performance of Prestressed Ceramsite Concrete Composite Beams

LI Pengfei; FENG Chuxiang; ZHU Chengfeng; XIAO Ziqiang; HE Zhimin; WANG Jianmin

doi:10.13204/j.gyjzG21092202

Volume 52 Issue 8

Aug. 2022

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LI Pengfei, FENG Chuxiang, ZHU Chengfeng, XIAO Ziqiang, HE Zhimin, WANG Jianmin. Experimental Research on Fatigue Performance of Prestressed Ceramsite Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 103-110. doi: 10.13204/j.gyjzG21092202

Citation:

LI Pengfei, FENG Chuxiang, ZHU Chengfeng, XIAO Ziqiang, HE Zhimin, WANG Jianmin. Experimental Research on Fatigue Performance of Prestressed Ceramsite Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 103-110. doi: 10.13204/j.gyjzG21092202

Citation:

LI Pengfei, FENG Chuxiang, ZHU Chengfeng, XIAO Ziqiang, HE Zhimin, WANG Jianmin. Experimental Research on Fatigue Performance of Prestressed Ceramsite Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(8): 103-110. doi: 10.13204/j.gyjzG21092202

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Experimental Research on Fatigue Performance of Prestressed Ceramsite Concrete Composite Beams

doi: 10.13204/j.gyjzG21092202

1. School of Civil Engineering and Environment, Ningbo University, Ningbo 315211, China;
2. Collaborative Innovation Center of Coastal Urban Rail Transit, Ningbo University, Ningbo 315211, China

Received Date: 2021-09-22
Available Online: 2022-12-01

Abstract

Abstract

In order to study the influence of construction technology on the fatigue performance of pre-stressed composite beams, the constant-amplitude fatigue experiment was carried out.Four pre-stressed ceramsite concrete and ordinary concrete composite beams were fabricated, two of which were subjected to two-point static loading and two were subjected to two-point fatigue bending. The experiment results showed that the flexural performance of prestressed ceramsite concrete T-beam members was continuously attenuated with the increase of the number of fatigue cycles. As the number of fatigue loading increased, the deflection value and the strain value of steel bars under the static load of the same level generally showed an increasing trend, but the magnitude of the change was small. The maximum crack width and average crack width increased with the increase of the number of fatigue cycles. For the test beams that had experienced cyclic loading 2 million times without fatigue failure, the failure mode under static loading was still typical bending failure, and its residual bearing capacity was significantly lower than that of the test beams under static loading, and the post-tensioned prestressed beam had a more obvious decline compared to the pre-tensioned prestressed beam.
- fatigue performance,
- T-shape composite beam,
- ceramsite concrete,
- prestress,
- flexural failure

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References(19)

References

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