RESEARCH ON CALCULATION METHOD FOR AXIAL COMPRESSIVE STRENGTH AND ULTIMATE COMPRESSIVE STRAIN OF RECTANGULAR CONCRETE CONFINED WITH FRP

HUANG Xinliang; CHEN Wenguang; TAN Pei; XU Jinjun; QIAN Sijiang

doi:10.13204/j.gyjzG21021601

Volume 51 Issue 10

Feb. 2022

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HUANG Xinliang, CHEN Wenguang, TAN Pei, XU Jinjun, QIAN Sijiang. RESEARCH ON CALCULATION METHOD FOR AXIAL COMPRESSIVE STRENGTH AND ULTIMATE COMPRESSIVE STRAIN OF RECTANGULAR CONCRETE CONFINED WITH FRP[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 170-176. doi: 10.13204/j.gyjzG21021601

Citation:

HUANG Xinliang, CHEN Wenguang, TAN Pei, XU Jinjun, QIAN Sijiang. RESEARCH ON CALCULATION METHOD FOR AXIAL COMPRESSIVE STRENGTH AND ULTIMATE COMPRESSIVE STRAIN OF RECTANGULAR CONCRETE CONFINED WITH FRP[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 170-176. doi: 10.13204/j.gyjzG21021601

Citation:

HUANG Xinliang, CHEN Wenguang, TAN Pei, XU Jinjun, QIAN Sijiang. RESEARCH ON CALCULATION METHOD FOR AXIAL COMPRESSIVE STRENGTH AND ULTIMATE COMPRESSIVE STRAIN OF RECTANGULAR CONCRETE CONFINED WITH FRP[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 170-176. doi: 10.13204/j.gyjzG21021601

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RESEARCH ON CALCULATION METHOD FOR AXIAL COMPRESSIVE STRENGTH AND ULTIMATE COMPRESSIVE STRAIN OF RECTANGULAR CONCRETE CONFINED WITH FRP

doi: 10.13204/j.gyjzG21021601

1. Zhejiang Hanlin Architectural Design Co., Ltd., Hangzhou 310000, China;
2. College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China;
3. Beijing Ancient Architectural Design and Research Institute Co., Ltd., Beijing 100009, China

Received Date: 2021-02-16
Available Online: 2022-02-21

Abstract

Abstract

The stress-strain constitutive relation of FRP-confined concrete can be divided into two categories of constraint models under axial load:work hardening and softening. The intrinsic axial compressive stress and strain in the ultimate state constitute the parameter basis of their constitutions. Calculating these constitutive parameters accurately can provide a discrimination criteria for evaluating the performance of FRP-confined concrete structures. The performance of the existing empirical models about compressive strength and ultimate compressive strain of rectangular concrete confined with FRP was evaluated comprehensively, and the results showed that the existing empirical models generally showed poor universality, low prediction accuracy and high dispersion. Aiming at the limitation of traditional prediction models, the prediction models of compressive strength and ultimate compressive strain for both hardening and softening types of rectangular concrete confined with FRP were constructed respectively based on back-propagation artificial neural network. The research results indicated that the neural network models could not only reflect the influence of various control parameters on the axial compressive stress and strain, but also the calculated values based on the neural network models were in better agreement with the experimental values when compared with the existing empirical models; moreover, the deviation and randomness were significantly decreased,so as to ensure the accuracy and stability of prediction results.
- FRP-confined concrete,
- compressive strength,
- ultimate compressive strain,
- rectangular column,
- neural network

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References(23)

References

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