A constitutive model of concrete confined by steel reinforcements and steel jackets

Y. F. Li, S. H. Chen, K. C. Chang, K. Y. Liu

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

In this paper, a total of 60 concrete cylinders 30 cm in diameter and 60 cm in length confined by steel jackets of different thicknesses and different types of lateral steel reinforcements are tested to obtain the stress-strain curves of the cylinders. A constitutive model is proposed to describe the behavior of concrete confined by steel reinforcement, steel jackets, and both steel reinforcement and steel jackets used to retrofit and strengthen reinforced concrete structures. The confined concrete stress-strain curve of the proposed model is divided into two regions: the curve in the first region is approximated using a second-order polynomial equation, and that in the second region using an nth-order power-law equation, where n is a function of the unconfined concrete strength and the lateral confining stress. The results of the experiments show that different types of lateral steel reinforcement contribute greatly to the compressive strength of concrete cylinders confined by the reinforcement. Comparing the stress-strain curves of the uniaxial test with that from the proposed model, we conclude that the proposed model for concrete confined by a steel jacket and lateral steel reinforcement can predict the experimental results very well.

原文English
頁(從 - 到)279-288
頁數10
期刊Canadian Journal of Civil Engineering
32
發行號1
DOIs
出版狀態Published - 2005 2月

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 環境科學 (全部)

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