Analysis of Creep Effect of Prestressed Concrete Continuous Beam Bridge in Construction Process

ZHOU Yan-ling; CAO Da-fu; WANG Kun; GE Wen-jie; LIU Jia-qi

doi:10.13204/j.gyjzg21060914

Volume 52 Issue 9

Sep. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(9): 101-107

ZHOU Yan-ling, CAO Da-fu, WANG Kun, GE Wen-jie, LIU Jia-qi. Analysis of Creep Effect of Prestressed Concrete Continuous Beam Bridge in Construction Process[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 101-107. doi: 10.13204/j.gyjzg21060914

Citation:

ZHOU Yan-ling, CAO Da-fu, WANG Kun, GE Wen-jie, LIU Jia-qi. Analysis of Creep Effect of Prestressed Concrete Continuous Beam Bridge in Construction Process[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 101-107. doi: 10.13204/j.gyjzg21060914

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Analysis of Creep Effect of Prestressed Concrete Continuous Beam Bridge in Construction Process

doi: 10.13204/j.gyjzg21060914

1. College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China;
2. Jiangsu Hanjian Group Co., Ltd., Yangzhou 225127, China

Received Date: 2021-06-09
Available Online: 2023-02-06

Abstract

Abstract

In order to study the creep effect of prestressed concrete continuous beam bridge in the construction process based on cantilever construction method, the construction process of Hai’an Xintongyang Grand Canal was monitored. The approximate calculation formula of bridge creep effect at any time was deduced. The concept of influence coefficient was proposed. The creep coefficient formula was obtained by linear regression. The results showed that the creep coefficient of single loading age obtained by regression could be extended to any loading age by aging theory. Compared with the current bridge codes in China and America, the calculated results and the measured results only had errors within 15 percent of the range, and the agreement was good. However, the strain deviation calculated by the current bridge code in China and the American code was more than 15%, and the deflection deviation was larger on the whole. Therefore, the calculation method obtained in this paper showed a good accuracy.
- prestress,
- concrete,
- continuous beam bridge,
- construction process,
- creep effect

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References(16)

References

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