期刊
COMPOSITE STRUCTURES
卷 134, 期 -, 页码 60-71出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2015.08.056
关键词
Concrete; Confinement; Cyclic load; Fiber-reinforced polymer; Stress-strain model
资金
- CityU [7004179]
- National Natural Science Foundation of China [51378449]
A stress-strain model is proposed for fiber reinforced polymer (FRP) confined concrete subjected to cyclic compression. This model employs an existing monotonic stress-strain relationship as the envelope curve. The cyclic load paths are formed by using a new and simple algebraic function. Concrete strength and confinement stiffness ratio are selected as the main factors that govern the parameters of the unloading and reloading paths. Available experimental results are used to evaluate the model parameters. The model uses more appropriate mathematical forms and includes significant factors ignored previously by others which makes it not only more rational and accurate but also simpler than other existing models reported in the literature. (C) 2015 Elsevier Ltd. All rights reserved.
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