Simulation Nonlinear of Structural Behavior of Hollow Reinforced Concrete Deep Beams Strengthened By CFRP.

Al-Maliki, Hadi Naser Ghadhban; Abbass, Mohammad Makki; Al-kaabi, Jasim Jarallah

doi:10.1088/1757-899x/928/2/022119

Cited by 7 publications

(19 citation statements)

References 9 publications

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“…12 and 13 show the three-dimension views contour at the failure stages of displacement. From this figure can observe that the RC tapered columns behavior shows that the maximum displacement occurs at the top ends of tapered dimensions of the models due to the varied dimension i.e the top base length less than the dimension of other parts this trend produced critical failure lies near top base not the middle of models, this behavior give safe against buckling failure [6,14,15]. The middle and top-end displacements represent a cumulative displacement that was recorded varied range quantity but symmetric about a center line of models i.e (at tension and compression sides of all tapered columns).…”

Section: Resultsmentioning

confidence: 95%

“…Fig. 9 shows that the failure of the hydrostatic stress pressure of the typical model of the solid and hollow column, where can be observed that the Roller Support Pin Support stresses are diagonal and are concentrated at the supports and up to the towards parts in the direction of the applied load and this stress increases according to the type of section, that is, the hollow section have higher stress than the solid section of the same applied load by about (22-37%) [14,15]. Also, the ratio of longitudinal and transverse steel reinforcement affects this stress, as it decreases as the percentage of steel reinforcing increases by (50%).…”

Section: Resultsmentioning

confidence: 99%

“…Numerical analysis involving the finite element approach was done by using ANSYS software [15] to simulate the conducted models. In the modeling process, the available elements were chosen to simulate the actual behaviors of the model's materials, supporting conditions, and the applied loading.…”

Section: Finite Elements Modellingmentioning

confidence: 99%

“…While the other limiting condition is the ability to bear loads, taking into account the cracks and deformations accompanying that [14,15] Concrete columns of all kinds and shapes are an important part of the facilities in civil engineering and its applications therefore, knowing its behavior under the influence of loads, including the axial load applied to it, is of paramount importance. This study included the numerical analysis of a type of tapered columns variable cross-sectioned along its linearly to investigate their behavior under the applied axial load.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Simulation Analysis of Tapered Reinforced Concrete Column (Solid and Hollow) Behavior Under Axial Load

Al-Maliki¹

2021

GEOMATE

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Tapered columns are a type of column that is used for different purposes, including architectural purposes or structural needs to take into account the changes that occur to moments along with the height of the column. For example, in highway bridges, tapered columns are used to reduce the number of moments transmitted to the base of the columns and from there to the foundation. This research studied the analysis of short reinforced concrete columns with variable cross-sections along the column in a linear manner by using the ANSYS V.15 software package. The variables that were studied included the type of section, solid or hollow, the ratio of longitudinal and transverse reinforcement, the ratio of the hollowness, and the comparison of numerical results with those obtained from the previous study. The results we obtained from the simulation of the numerical analysis of the models showed a very good agreement with the results of the experimental studies for them. This agreement can also be observed through statistical analysis using the arithmetic mean and standard deviation when compared. Thus, the proposed model by numerical analysis and hypotheses is suitable for formulating the behavior of these reinforced concrete tapered column models under the effect of axially applied load and other variables. The behavior of column models is based on applied loads, load-displacement curves, crack patterns, and failure modes. The results showed that increasing the ratio of longitudinal and transverse reinforcement increases the resistance of the R.C. column models and the ductility index with a decrease in the corresponding lateral displacement. This behavior is observed when changing the section from hollow to solid. Finally cracks pattern is represented in the concrete crushing and concrete spalling out of some parts at the end of the tapered and diagonal cracks in different places, especially at the end of the tapered.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Finite Elements Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nonlinear Simulation Analysis of Tapered Reinforced Concrete Column (Solid and Hollow) Behavior Under Axial Load

Al-Maliki¹

2021

GEOMATE

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“…Recently, there have been efforts to study the behavior of concrete beams with longitudinal openings as follows Murtada and Yahyia [17] investigated the structural behavior of shallow self-compacting beams when the diameter of the holes was changed, and it was found that the ultimate load decreases with the increase in the diameter of the holes. Muhanad and Saad [18] Hadi et al [19] They found that circular holes are better than rectangular when used in deep beams to make longitudinal holes. Haider and Mortada [20] find that parabola shapes are better than round when used in the longitudinal holes of the T-beams.…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Reinforced Concrete Deep Beams with Inclined Circular Holes

Abdulabbas¹,

Ismael²

2022

DJES

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The loads in the deep beams are transmitted diagonally from the load area to the support area by means of the strut and the tie. It is characterized by having a small span to depth ratio. which causes the distribution of stresses to be non-linear within the beam, which motivates researchers to study the effect of the placing of longitudinal hollows and the extent to which these holes affect the behavior and distribution of stresses for these types of beams. In addition to the advantages added by longitudinal hollow to the beam such as reducing weight and passing various electrical and mechanical services...etc. This study investigated the effect of making longitudinal circular holes (with a diameter of 50mm) with a slope on the structural behavior of three deep beams with a solid sample as a reference where the slope used was 0%, 4.3%, and 7.8%. The results showed that making holes reduces the load capacity of the deep beam, a decrease in the failure load was observed by 7.56%, 8.96%, and 11.2% for hollow beams with a slope of 0%, 4.3%, and 7.8%, respectively. Also, the appearance of flexural cracking increased by 2.66%, 2.66%, and 6.66%.and 2.14%, 3.52%, and 7.14%, respectively, for shear cracks. While the effect was small for the neutral axis location as well as for the vertical deflection.

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The effect of longitudinal holes on the structural behavior of reinforced concrete deep beams

Abdulabbas,

Ismael

2024

AIP Conference Proceedings

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Simulation Nonlinear of Structural Behavior of Hollow Reinforced Concrete Deep Beams Strengthened By CFRP.

Cited by 7 publications

References 9 publications

Nonlinear Simulation Analysis of Tapered Reinforced Concrete Column (Solid and Hollow) Behavior Under Axial Load

Nonlinear Simulation Analysis of Tapered Reinforced Concrete Column (Solid and Hollow) Behavior Under Axial Load

Structural Behavior of Reinforced Concrete Deep Beams with Inclined Circular Holes

The effect of longitudinal holes on the structural behavior of reinforced concrete deep beams

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