Probability‐based Design of Spun Concrete Beam‐columns

Kudzys, Antanas; Kliukas, Romualdas

doi:10.3846/jcem.2010.51

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…applying methodology of Kudzys and Kliukas (2010), the theoretical standard deviation of punching shear strength can be calculated according to the equation:…”

Section: Research Methods and Resultsmentioning

confidence: 99%

Probability Based Design of Punching Shear Resistance of Column to Slab Connections

Vainiūnas

Šalna

Šakinis

2015

Journal of Civil Engineering and Management

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Abstract. The paper analyzes the dependence of punching shear strength reliability index β, calculated according to En 1992En -1-1:2004En (2004 and sTR 2. 05.05:2005 (2005) in reinforced concrete floor slab-to-column joint on the values of random factors. The paper deals with theoretical research of the influence of independent random variables, such us the value of the characteristic compressive strength f ck of concrete, the area A s of the longitudinal reinforcement, effective cross-section depth d and the ratio of the self-weight and the effective load on the value of the reliability index β. The paper presents experimental results of reinforced concrete slabs with different longitudinal reinforcement ratio ρ subjected to a concentrated load. it was determined that when the effective load makes around 50% of the construction self-weight load, i.e. G k /Q k = 2 and when minimal variation coefficient estimates are taken (for concrete strength δf c = 0.1, for effective depth δd = 0,1 and for the area of longitudinal reinforcement cross-section δA s = 0.05 or δA s = 0.075 and when G k = Q k i.e. G k /Q k = 1 where δf c = 0.1, δd = 0.1 and δA s = 0.05) the reliability index β of the analyzed slabs calculated according to En 1992En -1-1:2004En (2004 as well as β calculated according to sTR 2.05. 05:2005 (2005), is bigger than En 1990En :2002En (2002 recommendation for the minimum value of reliability index -3.8 for RC2 construction reliability class ultimate. in other cases the reliability index β is close to 3.8 or much smaller than 3.8.

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“…applying methodology of Kudzys and Kliukas (2010), the theoretical standard deviation of punching shear strength can be calculated according to the equation:…”

Section: Research Methods and Resultsmentioning

confidence: 99%

Probability Based Design of Punching Shear Resistance of Column to Slab Connections

Vainiūnas

Šalna

Šakinis

2015

Journal of Civil Engineering and Management

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“…When the safety margin of a member depends on combinations of uninterrupted and independent action effects, its time-dependent survival probability in one survival mode is equal to P M [S k (t)] = P M [Z Mk (t) > 0], k ¼ 1; n. Thus, the time-dependent and instantaneous survival probabilities of such particular members are identical (Kudzys & Kliukas, 2010a).…”

Section: Instantaneous and Time-dependent Survival Probabilities And mentioning

confidence: 96%

“…where the deterministic factor K c = .3/(1 + .5ΦM OG /M OE ) when the basic creep coefficient of concrete Φ = 1.2-2.0 and first-order bending moments EN 1992EN -2, 2005, E c is the modulus of elasticity of a concrete, I ¼ ðp=4Þ Â ðr 4 2 À r 4 1 Þ is the moment of inertia of a cross-section, wherer 2 ; r 1 are the external and internal radii of annular cross-section circles (Figure 2(b)) (Kudzys & Kliukas, 2010a).…”

Section: First-and Second-order Load Effectsmentioning

confidence: 99%

A time-dependent reliability prediction of deteriorating spun concrete bridge piers

Kliukas

Lukoševičienė

Juozapaitis

2015

European Journal of Environmental and Civil Engineering

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The conceptions of the time-dependent reliability analysis of non-deteriorating and deteriorating spun concrete bridge piers, which are effected by permanent and transient loads, are discussed. There are analysed the first-and the second-order load effects of bracing bridge piers. The strength features of resisting bending moments used in ultimate limit state and probability-based designs are presented. A simplified analysis of non-deteriorating and deteriorating bracing spun concrete piers in persistent situations in limit state and probabilistic approaches is provided. The prediction of probability-based reliability on shafts of non-deteriorating and deteriorating bracing bridge piers is illustrated by numerical example.

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“…Concrete is a construction material that has been extensively studied in the field of civil engineering (Kudzys, Kliukas 2010). Various kinds of models have been developed by different researchers to investigate the fracture process and mechanical properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Improved Random Aggregate Model for Numerical Simulations of Concrete Engineering Simulations of Concrete Engineering

Qin

Jaturapitakkul

Dang

2013

Journal of Civil Engineering and Management

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In numerical simulations, concrete is usually considered as a three-phase material consisting of an aggregate, a cement matrix, and an interfacial transition zone (ITZ). Three-dimensional modeling of concrete usually requires extremely large computational requirements. In this study, an improved random aggregate model for numerical simulations of concrete is developed, which can minimize the number of elements, optimize the ITZ thickness, and create internal cracks and holes. Numerical investigations on the cracks form as well as deflection and tensile strength are also conducted based on three-point bending tests. The simulation results agree well with the experimental results.

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Probability‐based Design of Spun Concrete Beam‐columns

Cited by 12 publications

References 10 publications

Probability Based Design of Punching Shear Resistance of Column to Slab Connections

Probability Based Design of Punching Shear Resistance of Column to Slab Connections

A time-dependent reliability prediction of deteriorating spun concrete bridge piers

Improved Random Aggregate Model for Numerical Simulations of Concrete Engineering Simulations of Concrete Engineering

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