Ductility of high strength reinforced concrete columns

Ductility of symmetrically reinforced concrete columns

A theoretical ductility study based on full-range flexural behaviour is carried out for symmetrically reinforced concrete columns cast of normal- and high-strength concrete, with the axial load cov

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PDF] STRENGTH AND DUCTILITY OF CONCRETE COLUMNS

The technique requires wrapping thin, flexible high-strength fiber composite straps around the column to improve the confinement and, thereby, its ductility and strength. Analytical models are presented that quantify the gain in strength and ductility of concrete columns externally confined by means of high-strength fiber composite straps.

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Collapse behaviour of limited ductile high-strength

In this project, collapse performance of limited ductile high-strength reinforced concrete columns is investigated through experimental testing under uniaxial and biaxial cyclic actions. The primary objective of this research is to evaluate the seismic resilience of high-strength reinforced concrete columns constructed in high-rise buildings in

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Assessment of Methods for Development of Confinement Model

The high tensile property of steel is thus used to confine and increase compressive strength and ductility of RC columns. Confined concrete is defined as concrete that is restrained laterally by any internal or external means i.e. reinforcement consisting of steel stirrups or spirals, Fiber Reinforced Polymer (FRP), Circular Concrete Filled

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PDF Effect of infill wall on the ductility and behavior of

In recent decades, the use of high strength reinforced concrete (H.S.R.C) in buildings is widely spread, especially in the high-rise buildings. The behavior and ductility of the high strength reinforced concrete frames with infill wall under the effect of lateral load still needs a lot of investigations. The provision

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IS 13920 (1993): Ductile detailing of reinforced concrete

III and is more than 5 storey high. NOTE - The definition of seismic zone and impor- tance factor are given in IS 1893 : 1984. 1.1.2 The provisions for reinforced concrete construction given herein apply specifically to monolithic reinforced concrete construction. Precast and/or prestressed concrete

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Preloaded RC columns strengthened with high-strength

Takeuti AR, Hanai JB (1999) Strength and ductility of reinforced concrete columns strengthened with high-performance concrete jackets. In Holand I, Sellevold EJ (eds) Proceedings of international symposium on utilization of high strength/high performance concrete, Sandefjord, Norway, pp 646-655. 2.

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PDF Axial Compression Effect on Ductility Design of Reinforced

Reinforced concrete walls can render medium- to high-rise buildings excellent lateral stability and ductility. However, modern building design often lead to the vertical structural members subjected to very high axial compression ratio (ACR), which can deprive the inherent ductility. To evaluate and

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Flexural ductility design of high‐strength concrete columns

In the seismic design of a structure, it is necessary to provide not only sufficient strength, but also a minimum level of flexural ductility for reinforced concrete (RC) columns. Eurocode EN1998-1 directly specifies such minimum flexural ductility, while Chinese code GB50011 limits the normalized design axial force to achieve a nominal minimum

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PDF Seismic Retrofitting Strategies of Reinforced Concrete

performance. Inadequate strength and ductility of the structural member can and will result in local or complete failure of the system. The different modes of failure in various structural members are reviewed. Columns: In reinforced concrete columns several interaction mechanism influences its lateral load behaviour.

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Shear strength and seismic performance of non-seismically

The model is applied for predicting the shear strength of beam-column joints, and extended further for determining the joint shear strength deterioration against ductility. The proposed model is derived based largely on the two state-of-the-art shear theories of reinforced concrete: Modified Compression Field Theory and Fixed Angle Softened

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Strength and Ductility of Concrete Columns Externally

technique requires wrapping thin, flexible high-strength fiber composite straps around the column to improve the confinement and, thereby, its duc-tility and strength. Analytical models are presented that quantify the gain in strength and ductility of concrete columns externally confined by means of high-strength fiber composite straps.

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Experimental Study on Seismic Capacity of Reinforced

of Reinforced Concrete Composite Columns Based on a High-ductile Fiber Cementitious reinforced concrete columns,w strengthening compressive strength of the concrete and the uniaxial compressive strength of the concrete was measure, a,27.6a.

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PDF Experimental Study on Seismic Behavior of High Strength

Experimental Study on Seismic Behavior of High Strength Reinforced Concrete Frame Columns with High Axial Pressing Ratio Guojun ZHANG1, a*, Benliang Liang1, b, Boquan Liu2, c 1A rc hiteu E ngee Coll , S aN m l U v s y , ha 20 14 8 a 2 A rc hiteu E ng nColl ge , ag' U v s y Xi' 7 106 , a

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Which is the better building material? Concrete or steel

Cast-in-place reinforced concrete offers outstanding resistance to explosion and/or impact. Moreover, it can endure very high temperatures from fire for a long time without loss of structural integrity," says Alfred G. Gerosa, president, Concrete Alliance Inc., Steel's strength and ductility, combined with solid engineering and

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SHEAR STRENGTH OF CIRCULAR REINFORCED CONCRETE

ductility demand. An examination of existing design equations reveals wide difference in predicted response. Also, the shear strength model for rectangular reinforced concrete columns proposed by Sezen et al. (2004) is used for evaluating whether it is applicable to predict the shear strength of circular columns.

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Steel, Wood and Concrete: A comparison | SkyCiv Engineering

Due to high strength/weight ratio, steel compression members are, in general, more slender and consequently more susceptible to buckling than, say, reinforced concrete compression members. As a result, more design considerations are needed to improve the buckling resistance of slender steel compression members.

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PDF Reinforced high strength concrete beams subjected to air

A total of 49 reinforced concrete beams with a length of 1.72 m of both HSC and normal strength concrete (NSC) were tested of which 38 beams were subjected to air blast loading and the remaining eleven beams were tested statically for reference. Concrete with nominal compressive cube strengths 40, 100, 140, 150

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Effect of Transverse Reinforcement on the Behavior of

Authors: Ahmed H. Abdel-Kareem, Hala. Abousafa, Omia S. El-Hadidi. Abstract: The results of an experimental program conducted on seventeen simply supported concrete beams to study the effect of transverse reinforcement on the behavior of lap splice of steel reinforcement in tension zones in high strength concrete beams, are presented.

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Stress-Strain Relationship of Synthetic Fiber Reinforced

Of Materials in Civil Engineering, 9(4), 171 -179 (1997) [12] G. Campione, The effects of fibers on the confinement models for concrete columns Canadian J. of Civil Engineering, 29(5), 742-750, (2002) [13] Z. Djauhari, and I. Imran, Study of confinement models for high-strength concrete columns confined by high-strength steel, Proc.of the Int

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Shear Strength Model for Lightly Reinforced Concrete Columns

Sae-Long, Worathep / Limkatanyu, Suchart / Prachasaree, Woraphot / Horpibulsuk, Suksun / Panedpojaman, Pattamad (2019): Nonlinear Frame Element with Shear-Flexure Interaction for Seismic Analysis of Non-Ductile Reinforced Concrete Columns. In: International Journal of Concrete Structures and Materials, v. 13, n. 1 (January 2019).

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