Finite element modeling of confined concrete-I: Drucker–Prager type plasticity model

Yu, Tao; Teng, Jinguang; Wong, Yi Lin; Dong, Shilin

doi:10.1016/j.engstruct.2009.11.014

Cited by 366 publications

(135 citation statements)

References 31 publications

Supporting

Mentioning

131

Contrasting

Unclassified

Order By: Relevance

“…This phenomenon has been well explained by Menétrey and Willam's triaxial failure criterion (Menétrey and Willam, 1995) and the extended Drucker-Prager failure criterion (Yu et al, 2010) for concrete. Even if the mean value of f r,2 and f r,3 remains the same, the larger difference between their actual values will end up with a weaker effective confinement.…”

Section: Introductionmentioning

confidence: 96%

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Ouyang¹,

2014

Magazine of Concrete Research

View full text Add to dashboard Cite

The existence of curvature can reduce the effective confining pressure within concrete-filled steel tube (CFST) columns under eccentric compression. The existing analysis method ignores such an effect and still treats the confining pressure as constant across the whole section as if it is under axial compression. In this paper, the authors have made significant improvements on the existing model, so that the curvature effect can be taken into account to properly interpret the non-linear behaviour of eccentrically loaded CFST columns. Meanwhile, shortening between two hinges is an important data output in test programmes of this type, which has been completely neglected by the existing analysis method. This improved method also provides calculation steps to track the value of shortening for each load increment. Unknown parameters in this new method are determined on the basis of data fitting of 87 specimens from previous researchers' test programmes. The following parameters are incorporated in this study: effective tube length (660–4670 mm), diameter of tube (76–600 mm), tube thickness (1·52–8·81 mm), yield strength of tube (256·4–517·0 MPa), cylinder strength of concrete (26·42–112·70 MPa) and eccentricity (9·4–300 mm). The load–axial displacement, load–deflection and moment–curvature curves predicted by the new method agree well with their measured counterparts in the tests.

show abstract

Section: Introductionmentioning

confidence: 96%

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Ouyang¹,

2014

Magazine of Concrete Research

View full text Add to dashboard Cite

show abstract

“…(1) as proposed by Papanikolaou and Kappos [30], and K c can be determined using Eq. (2) based on Yu et al [31]. Lower values of K c result in increase of strength and less negative postpeak stiffness.…”

Section: Finite Element Modelsmentioning

confidence: 99%

Analysis and behavior of high-strength rectangular CFT columns

Lai¹,

Varma²

2018

Proceedings 12th International Conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018

View full text Add to dashboard Cite

The current AISC Specification (AISC 360-16) specifies the material strength limits for concrete-filled steel tube (CFT) columns. According to AISC 360-16, the steel yield stress (F y ) for CFT columns should not exceed 525 MPa, and the concrete compressive strength (f' c ) should not exceed 70 MPa. CFT columns are classified as high strength if either F y or f' c exceeds these specified limits, and are classified as conventional strength if both F y and f' c are less than or equal to the limits. Due to lack of adequate research and comprehensive design equations, AISC 360-16 does not endorse the use of high-strength materials for CFT columns. This paper makes a contribution towards addressing this gap using a two-step approach. The first step consists of compiling an experimental database of high-strength rectangular CFT column tests in the literature and evaluating the possibility of extending the current AISC 360-16 design equations to high-strength rectangular CFT columns. The second step consists of developing and benchmarking detailed 3D nonlinear finite element models for predicting the behavior of high-strength CFT columns from the database. The benchmarked models are being used to perform comprehensive parametric studies to address gaps in the database and propose design equations for high-strength rectangular CFT members, which will be part of a future paper.

show abstract

“…They proposed a stress-strain model for confined concrete under monotonic compression, which was widely used by many researchers. More recently, many researchers were interested in investigating the behavior of concrete confined by FRP jackets (Mirmiran and Shahawy 1997;Fam and Rizkalla 2001;Harries and Kharel 2002;Jiang and Teng 2007;Yu et al 2010aYu et al , 2010b. Teng et al (2007) proposed a uniaxial stress-strain model to predict the behavior of FRP confined concrete by modifying the model by Mander et al (1988).…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Chen

Andrawes

2014

ACT

View full text Add to dashboard Cite

The novel technique of using Shape Memory Alloy (SMA) transverse reinforcement to confine concrete has proven its success in increasing the strength and ductility of concrete elements significantly. This new technique exploits the thermally activated shape memory feature of SMAs to apply high and permanent confinement pressure on concrete. Despite the experimental work done in this topic over the last few years, the numerical/analytical efforts are still lacking. This paper utilizes the analytical framework of the damaged plasticity model along with the finite element method (FEM) to predict and study the behavior of SMA confined concrete under uniaxial compression load. The flow rule and hardening/softening function adopted in the models are developed based on previous test results. The results prove that the finite element models can successfully capture the behavior of SMA confined concrete.

show abstract

Finite element modeling of confined concrete-I: Drucker–Prager type plasticity model

Cited by 366 publications

References 31 publications

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Analysis and behavior of high-strength rectangular CFT columns

Finite Element Analysis of Actively Confined Concrete Using Shape Memory Alloys

Contact Info

Product

Resources

About