A Comparative Experimental Investigation on Laced Reinforced Concrete Beam and Conventional Beam under Monotonic Loading

Sudharsan, N.; Grant, Christopher; Murthi, P.; Poongodi, K.; Kumar, P. M. V. Udaya

doi:10.1088/1755-1315/822/1/012034

Cited by 15 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A Laced Reinforced Concrete (LRC) structure is a structural element that includes lacings and equal reinforcement on both the tension and compression faces. Due to the impact of the lacing reinforcement's truss action, the major flexural reinforcement bars are bound together on the element's face and the concrete components [1][2]. For concrete members, laced reinforcement increases ductility and improves confinement [3][4][5], providing greater shear resistance than traditional shear reinforcement (stirrups), which is significantly required in fortified structures [6].…”

Section: Introductionmentioning

confidence: 99%

The Experimental and Theoretical Effect of Fire on the Structural Behavior of Laced Reinforced Concrete Deep Beams

Kareem,

Mohammed

2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

A Laced Reinforced Concrete (LRC) structural element comprises continuously inclined shear reinforcement in the form of lacing that connects the longitudinal reinforcements on both faces of the structural element. This study conducted a theoretical investigation of LRC deep beams to predict their behavior after exposure to fire and high temperatures. Four simply supported reinforced concrete beams of 1500 mm, 200 mm, and 240 mm length, width, and depth, respectively, were considered. The specimens were identical in terms of compressive strength ( 40 MPa) and steel reinforcement details. The same laced steel reinforcement ratio of 0.0035 was used. Three specimens were burned at variable durations and steady-state temperatures (one hour at 500 °C and 600 °C, and two hours at 500 °C). The flexural behavior of the simply supported deep beams, subjected to the two concentric loads in the middle third of the beam, was investigated with ABAQUS software. The results showed that the laced reinforcement with an inclination of 45˚ improved the structural behavior of the deep beams, and the lacing resisted failure and extended the life of the model. The optimal structural response was observed for the specimens. The laced reinforcement improved the failure mode and converted it from shear to flexure-shear failure. The parametric study showed that the lacing bars remarkably improved the strength of the deep beams and they were not affected more by the steady-state temperature and duration. Furthermore, a greater increase in load-carrying capacity was associated with an increase in the flexural diameter of approximately 12 and 16 mm by approximately 24.77% and 87.61%, respectively, compared to the reference LRC deep beams.

show abstract

Section: Introductionmentioning

confidence: 99%

The Experimental and Theoretical Effect of Fire on the Structural Behavior of Laced Reinforced Concrete Deep Beams

Kareem,

Mohammed

2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

show abstract

“…Normally, all type of framed structures consisted of structural and nonstructural elements [7,8]. In that, masonry in lled walls are recommended as a nonstructural member for separating the rooms and living can be pro ciently used in combination with a framing system [9,10]. Although, these nonstructural boundaries of unreinforced masonry walls are imperfect in shear and tensile strength and it is brittle mannerism, inconceivable damages are exposed at time of loading [11,12].…”

Section: Introductionmentioning

confidence: 99%

Study on Performance of Infilled Wall in an RC-Framed Structure Using a Reinforcing Band

Jagadeesan

Sudharsan

Subash

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Infilled wall is a primary structure which is used in a multistorey RC-framed structure. It is not designed like structural elements, but it is subjected to structural load and response as a heavily damaged element into the building. The main problem of an infilled wall is not actively utilizing in the framed structure and it is not interacted with frame elements. The objective of research is to utilize the infilled wall in the RC-framed structure by improving its performance of behavior. Here, two different types of brick masonry like Autoclaved concrete and clay brick masonry were used as the infilled wall in an RC-framed structure. A singly bay and single storey RC framed structure was cast and tested under a 1/10th scale model by diagonal compressive loading. The specimen was subjected to static loading by a universal testing machine. Infilled wall is weak in tension, so a reinforcing band was used to improve the performance like load carrying capacity, stiffness, ductility, and energy dissipation capacity. Based on the results of the experimental study, it is found that reinforcing band with the infilled wall gives better behavior of the RC-framed structure.

show abstract

“…In the last few years, the effect of blast loads on buildings became a serious matter that could be taken into consideration in order to limit damages and losses caused by terrorist attacks. Laced reinforced concrete (LRC) could be used for special types of structures like blast‐resistant structures 2 . Considering the dynamic action load nature, continuous inclined reinforcement (lacing reinforcement) is provided in two parallel faces along the longitudinal reinforcement and laid with traverse cross rods.…”

Section: Introductionmentioning

confidence: 99%

“…Laced reinforced concrete (LRC) could be used for special types of structures like blast-resistant structures. 2 Considering the dynamic action load nature, continuous inclined reinforcement (lacing reinforcement) is provided in two parallel faces along the longitudinal reinforcement and laid with traverse cross rods.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of RC T‐beams toughness using laced stirrups reinforcement for blast response predictions

Allawi

Shubber

Gharawi

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

The dynamic behavior of laced reinforced concrete (LRC) T‐beams could give high‐energy absorption capabilities without significantly affecting the cost, which was offered through a combination of high strength and ductile response. In this paper, LRC T‐beams, composed of inclined continuous reinforcement on each side of the beam, were investigated to maintain high deformations as predicted in blast resistance. The beams were tested under four‐point loading to create pure bending zones and obtain the ultimate flexural capacities. Transverse reinforcement using lacing reinforcement and conventional vertical stirrups were compared in terms of deformation, strain, and toughness changes of the tested beams. The inclination angles of the used lacing reinforcement with respect to the longitudinal reinforcement were 45° and 60°. The lacing reinforcement was efficient and participated actively in resisting the bending moments and shear forces at the same time. For the same diameter of lacing reinforcement, the 60° inclination angle imposed more ductility before failure than beams with lacing reinforcement of a 45° inclination angle. Moreover, the lacing bar diameter was more effective in improving the load‐carrying capacities when using the inclination angle of 45°. A finite element (FE) model was developed and validated using the experimental results based on the measured deformations and strains to conduct a parametric study. The investigated parameters included the effect of the arrangements of the applied loads, laced rebar diameter, inclination angle, tension reinforcement ratio, and concrete strength.

show abstract

A Comparative Experimental Investigation on Laced Reinforced Concrete Beam and Conventional Beam under Monotonic Loading

Cited by 15 publications

References 9 publications

The Experimental and Theoretical Effect of Fire on the Structural Behavior of Laced Reinforced Concrete Deep Beams

The Experimental and Theoretical Effect of Fire on the Structural Behavior of Laced Reinforced Concrete Deep Beams

Study on Performance of Infilled Wall in an RC-Framed Structure Using a Reinforcing Band

Enhancement of RC T‐beams toughness using laced stirrups reinforcement for blast response predictions

Contact Info

Product

Resources

About