An Empirical Model of the Lateral Cofinement of High Strength Concrete

Nakazawa, N.; Kawashima, Koichiro; Watanabe, Gakuho; Sakai, Jun–ichi

doi:10.2208/jscej.2005.787_117

Cited by 2 publications

(5 citation statements)

References 10 publications

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“…The reliability of the proposed ANN model is evaluated by comparing the calculated values between proposed model and seven existing models . These models (summarized in Table ) were proposed by Richart, Mander, Sakai, Saatcioglu, Hoshikuma, Legeron, and Nakawaza based on experimental results.…”

Section: Resultsmentioning

confidence: 99%

“…In previous studies, the main parameters affecting the compressive strength of stirrup‐confined circular concrete columns included the volumetric ratio ( ρ sv ) of the stirrups, the tensile yield strength ( f sv ) of the stirrups, and the concrete strength ( f c ). These three parameters were investigated in this study.…”

Section: Experimental Test and Data Collectionmentioning

confidence: 99%

“…The training and testing data sets should be selected randomly to eliminate the effects of artificial selection on the results and make the proposed model has high application. To make the research parameters consistent with existing calculation models, the volumetric ratio ( ρ sv ) and tensile yield stress ( f sv ) of the stirrups and the axial compressive strength ( f c ) of unconfined concrete were selected as the main input parameters, and the compressive strength ( f cc ) of the confined circular columns was used as the output variables. Table showed the ranges of the input and the output variables in ANN model.…”

Section: Experimental Test and Data Collectionmentioning

confidence: 99%

“…Additionally, the lateral pressure was considerably affected by the volumetric ratio and the tensile yield strength of lateral reinforcements. Mander et al introduced the confined effectiveness coefficient to evaluate the lateral pressure provided by transverse reinforcements based on a set of experimental results, and subsequent researchers focused on the effects of lateral stress provided by stirrups and modified the confined effectiveness coefficient to predict the compressive strength. The existing models in the literature for predicting the compressive strength of stirrup‐confined concrete columns mainly focused on the tensile yield strength ( f sv ) and the volumetric ratio ( ρ sv ) of transverse reinforcements, as well as the concrete strength ( f c ).…”

Section: Introductionmentioning

confidence: 99%

“…, ), were used to develop and evaluate the ANN model. Finally, the ANN model was compared with existing analytical models published in the literature to verify its applicability and reliability.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Estimation of compressive strength of stirrup‐confined circular columns using artificial neural networks

Chang

Zheng

2019

Structural Concrete

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In concrete structures design, the compressive strength of circular concrete columns confined by spiral stirrups is an important mechanical property in evaluating the performance of concrete structures. However, evaluating the compressive strength of confined concrete columns is rich in challenge due to the complex mechanics between the concrete and the transverse reinforcements. The objective of this paper is to establish an artificial neural network (ANN) model to evaluate the compressive strength of concrete columns confined by transverse reinforcements. The model proposed in this study is suitable for both normal-strength and high-strength concrete columns, covering concrete strengths were in the range of 19.1-151 MPa. Three main influential parameters, including the tensile yield strength and the volumetric ratio of the transverse reinforcements, as well as the concrete strength, were applied as input variables to the model. The ANN model was trained and tested by a reliable database consisting of 240 data sets obtained from authors and published literature. The proposed ANN model used to predict the compressive strength of circular concrete columns confined by spiral stirrup had high applicability and reliability compared with existing analytical models.

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Section: Resultsmentioning

confidence: 99%