Design, manufacture and testing of a new hybrid column

Mirmiran, Amir; Samaan, Michel; Cabrera, Suramy; Shahawy, Mohsen

doi:10.1016/s0950-0618(97)00073-1

Cited by 30 publications

(8 citation statements)

References 7 publications

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“…Ebenfalls wurde teilweise eine Grundierung auf Epoxidharzbasis vor dem Laminierprozess aufgetragen. Die Versuchsergebnisse von Mirmiran et al [13, 49] sind nicht in der Tabelle enthalten. Bei diesen Untersuchungen handelte es sich teilweise um betongefüllte FVK‐Rohre mit abweichenden Verbundbedingungen.…”

Section: Diskussionunclassified

Einfluss der Untergrundvorbehandlung auf das Tragverhalten CFK‐umschnürten Betons

Messerer

Kaeseberg

Weisbrich

et al. 2020

Beton und Stahlbetonbau

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Die Umschnürung mit CFK‐Werkstoffen ist eine effektive Maßnahme zur Steigerung der Tragfähigkeit und Duktilität von Stahlbetonstützen. Die Umschnürungsbewehrung bewirkt eine Behinderung der Querdehnung des Betons und versetzt diesen in einen dreidimensionalen Spannungszustand. Dadurch lassen sich höhere Betondruckfestigkeiten erzielen und das Spannungs‐Dehnungsverhalten beeinflussen. Trotz nationaler und internationaler Forschungsbemühungen ist der Einfluss bestimmter Parameter auf das Tragverhalten CFK‐umschnürten Betons noch nicht ausreichend geklärt. Der Beitrag befasst sich mit den Auswirkungen der Untergrundvorbehandlung auf das Tragverhalten von CFK‐Mantel und umschnürtem Beton. Zu diesem Zweck wurden CFK‐umschnürte Betonzylinder mit unterschiedlichen Verbundbedingungen und Maßnahmen zur Untergrundvorbehandlung untersucht. Darüber hinaus wurden die experimentellen Daten bestehender, empirischer Bemessungsmodelle hinsichtlich der Vorbehandlungsmaßnahmen der einzelnen Versuchsprogramme ausgewertet.

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Section: Diskussionunclassified

Einfluss der Untergrundvorbehandlung auf das Tragverhalten CFK‐umschnürten Betons

Messerer

Kaeseberg

Weisbrich

et al. 2020

Beton und Stahlbetonbau

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“…Hence the column specimens in Mirmiran et al (1998a) and Samaan et al (1998) have not been considered.…”

Section: Selection Criteria Of the Cfft Databasementioning

confidence: 99%

Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model

Khan¹,

Sheikh²,

Hadi³

2016

Steel Compos. Struct.

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Concrete Filled Fibre Reinforced Polymer Tube (CFFT) for new columns construction has attracted significant research attention in recent years. The CFFT acts as a formwork for new columns and a barrier to corrosion accelerating agents. It significantly increases both the strength capacity (Strength enhancement ratio) and the ductility (Strain enhancement ratio) of reinforced concrete columns. In this study, based on predefined selection criteria, experimental investigation results of 134 circular CFFT columns under axial compression have been compiled and analysed from 599 CFFT specimens available in the literature. It has been observed that actual confinement ratio (expressed as a function of material properties of fibres, diameter of CFFT and compressive strength of concrete) has significant influence on the strength and ductility of circular CFFT columns. Design oriented models have been proposed to compute the strength and strain enhancement ratios of circular CFFT columns. The proposed strength and strain enhancement ratio models have significantly reduced Average Absolute Error (AAE), Mean Square Error (MSE), Relative Standard Error of Estimate (RSEE) and Standard Deviation (SD) as compared to other available strength and strain enhancement ratios of circular CFFT column models. The predictions of the proposed strength and strain enhancement ratio models match well with the experimental strength and strain enhancement ratios investigation results in the compiled database. (Received April 21, 2016, Revised June 22, 2016, Accepted June 23, 2016 Abstract. Concrete Filled Fibre Reinforced Polymer Tube (CFFT) for new columns construction has attracted significant research attention in recent years. The CFFT acts as a formwork for new columns and a barrier to corrosion accelerating agents. It significantly increases both the strength capacity (Strength enhancement ratio) and the ductility (Strain enhancement ratio) of reinforced concrete columns. In this study, based on predefined selection criteria, experimental investigation results of 134 circular CFFT columns under axial compression have been compiled and analysed from 599 CFFT specimens available in the literature. It has been observed that actual confinement ratio (expressed as a function of material properties of fibres, diameter of CFFT and compressive strength of concrete) has significant influence on the strength and ductility of circular CFFT columns. Design oriented models have been proposed to compute the strength and strain enhancement ratios of circular CFFT columns. The proposed strength and strain enhancement ratio models have significantly reduced Average Absolute Error (AAE), Mean Square Error (MSE), Relative Standard Error of Estimate (RSEE) and Standard Deviation (SD) as compared to other available strength and strain enhancement ratios of circular CFFT column models. The predictions of the proposed strength and strain enhancement ratio models match well with the experimental strength and strain enhancement ratios investigation res...

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“…All beams failed in flexure, except for one with 0 o degree fibers, which failed by splitting due to horizontal shear. Mirmiran et al (1998) initiated the pilot monotonic shear test of CFFT. Rectangular cross sections filled with concrete were tested at a constant shear-span-to-depth a/D o ratio of 1.33.…”

Section: Literature Reviewmentioning

confidence: 99%

Fatigue Behavior of Concrete-Filled Fiber-Reinforced Polymer Tubes

2008

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AHMAD, IFTEKHAR. Shear Response and Bending Fatigue Behavior of Concrete-Filled Fiber Reinforced Polymer Tubes. (Under the direction of Amir Mirmiran.) Recent field applications and research findings have demonstrated the effectiveness of concrete-filled fiber reinforced polymer (FRP) tubes (CFFT) as an efficient and promising hybrid system for designing main components such as pier columns, girders and piles for a bridge system. The vision was to provide a cost-competitive unified system composed of FRP/concrete hybrid members, which may act as a viable alternative to conventional reinforced and prestressed concrete structural systems. To achieve their broad-based implementation in civil infrastructure, understanding of their behavior and developing analytical tools under full spectrum of primary and secondary load demands are essential. Response characterizations under primary load demands namely, axial compression, flexural and axial-flexural, and seismic loadings have already been reported. However, investigations under primary shear and secondary fatigue load demands remain to be addressed. The present study consists of two phases. In the first phase, an experimental and analytical investigation was undertaken to characterize the behavior of a CFFT beam. Study on shear was primarily focused on the deep beam behavior. Comparisons of behavior of deep, short and slender beams were also highlighted. A strut-and-tie model approach, pertinent to analysis of deep reinforced and prestressed concrete members, was proposed to predict the shear strength of deep CFFT beams. Prediction showed good agreement with test results. It was concluded that shear failure mode is only critical for beams with shear span less than their depth.

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Design, manufacture and testing of a new hybrid column

Cited by 30 publications

References 7 publications

Einfluss der Untergrundvorbehandlung auf das Tragverhalten CFK‐umschnürten Betons

Einfluss der Untergrundvorbehandlung auf das Tragverhalten CFK‐umschnürten Betons

Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model

Fatigue Behavior of Concrete-Filled Fiber-Reinforced Polymer Tubes

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