Behavior and ductility of high strength reinforced concrete frames

Tawfik, Ahmed; Badr, M. R. K.; Elzanaty, Ashraf H.

doi:10.1016/j.hbrcj.2013.11.005

Cited by 22 publications

(8 citation statements)

References 2 publications

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“…In order to let the plastic hinges forms in the beams while the columns remain intact because the columns failures will result in brittle collapse. Tawfik et al (2013) verified that having equal beam-column dimensions will results in the formation of plastic hinges in the column, and having a stiff column result in forming plastic hinges in the beams. However, in this paper for research purposes, the sizes of beams and columns are fixed for all models to ensure that it will not influence the value of ductility.…”

Section: Fig 1 Base Shear Vs Roof Displacement Pushover Curvementioning

confidence: 92%

Evaluation of the effect of shear wall with and without opening on the ductility of RC structure

Sarhan¹

2021

IJAESA

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The ductility of a structure is an important factor that should be taken under consideration in the design against lateral loads like an earthquake. This paper presents the effect of the shear wall on the ductility of the structure and the effects of the presence of opining in it on the ductility. Eighteen 2D moment-resisting frames (MRFs), with the shear wall (SW) and SW with opening structural models, were created and designed. The pushover analyses using ETABS 19 software were performed on the designed models to calculate the ductility of the structural models. The obtained results show that the shear wall in the models increases the ductility of the structures significantly, while the presence of an opening decreases it slightly. Besides, the increase in the number of storeys increases the ductility of MRF models but decreases the ones with SW. Oppositely; the increase in span length reduced the ductility of MRF models and increases the docility of the models with SW

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Section: Fig 1 Base Shear Vs Roof Displacement Pushover Curvementioning

confidence: 92%

Evaluation of the effect of shear wall with and without opening on the ductility of RC structure

Sarhan¹

2021

IJAESA

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“…A significant increase in ultimate load and ultimate displacement was observed by increasing the amount of confinement reinforcement in the beam-column joints [61]. In some cases, severe cracks were observed at the beamcolumn joint and elongated to the critical regions in the columns, which caused permanent displacement.…”

Section: Damage Inflicted At Beam-column Jointsmentioning

confidence: 99%

A Case Study on Structural Failure of Reinforced Concrete Beam-Column Joint After the First Significant Earthquake Impact in Malaysia

Ganasan

Tan

Ibrahim

et al. 2020

IJIE

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This paper presents a case study regarding failures of structural buildings which occurred in Malaysia after the first significant earthquake event dated on June 5, 2015. Ranau is a locality situated in Sabah, Malaysia on the island of Borneo. The seismic activity was triggered when an earthquake with a magnitude of 5.9 afflicted Ranau, including seven other districts that also felt the tremors. Even though the impact of magnitude was undisputedly not high, the severity level of damages was found to be absolute (irreparable) in the structural RC beam-column joints and soft-storey buildings. Most of the buildings in Malaysia were built without the consideration of seismic design, and thus a major factor in structural failure. The earthquake has directed the seismic demand, while the total displacement was concentrated at the weakest floor that caused more damage to the building. This paper shows the causes of beam-column joint damages and explains the proposed (to-date) strengthening methods. Future studies related to seismic activities are in need to analyse the performance of the existing design of structural RC members and propose seismic design in Malaysia.

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“…The load displacement relationship helps in determining the level of ductility of the connection. The ratio of failure displacements to yield displacements are used to express the displacement ductility factor [5]. Typically, a connection needs to be ductile to avoid sudden failure because a brittle connection would cause the structure to fail instantly and cause huge safety issues.…”

Section: Load Displacement Relationshipmentioning

confidence: 99%

Performance of Precast Beam to Column Connection With Billet Connector Using FEM

Almohagry¹,

Ibrahim²,

Athar³

et al. 2021

Proceedings of the 4th International Conference on Sustainable Innovation 2020–Technology, Engineering and Agriculture (ICoSITE

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In precast concrete structures, connections play an important role in ensuring the safety of the structure. Current design practice in structural analysis assumes the connection as pinned or rigid. However, this cannot be relied upon for safety against collapse because during service the actual connection may react differently by rotating and, consequently, deviating from the desired response for what it was designed for. This paper investigates the performance of a precast beam-to-column connection with billet connector using three-dimensional non-linear finite element model in Finite Element Analysis (FEA) software, Abaqus. The material properties of concrete were defined using a non-linear concrete damage plasticity model (CDPM). This model was used to predict the connection behavior under monotonic and cyclic loading when different parameters were set such as dilation angle, interaction properties and friction factor. Furthermore, the moment resistance and failure mechanism of the connection were investigated. The fixity factor was calculated, and the connection was classified using the 'beam line' method through investigating the moment-rotation (M-ϕ) and the response of the beam. The FE analysis was also validated against experimental results. This process was carried out to obtain the most efficient method of designing a precast connection in terms of maximum displacement, stress generated, strength, hysteretic behaviour, and stiffness degradation.

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Behavior and ductility of high strength reinforced concrete frames

Cited by 22 publications

References 2 publications

Evaluation of the effect of shear wall with and without opening on the ductility of RC structure

Evaluation of the effect of shear wall with and without opening on the ductility of RC structure

A Case Study on Structural Failure of Reinforced Concrete Beam-Column Joint After the First Significant Earthquake Impact in Malaysia

Performance of Precast Beam to Column Connection With Billet Connector Using FEM

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