Damages on reinforced concrete buildings due to consecutive earthquakes in Van

Ateş, Şevket; Kahya, Volkan; Yurdakul, Muhammet; Adanur, Süleyman

doi:10.1016/j.soildyn.2013.06.006

Cited by 64 publications

(25 citation statements)

References 22 publications

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“…e damaged buildings and the resulting casualties observed in majority of the past earthquakes have provided ample evidence that the existing deficient reinforced concrete buildings, those nonconforming to modern seismic codes, are vulnerable against earthquake-imposed actions [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Modern Bare and Masonry-Infilled RC SMRF Structures

Ahmad

Pervez

et al. 2019

Advances in Civil Engineering

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Improper execution of modern code-designed structures in many developing countries have resulted in significant deficient building stock; low strength of concrete, reduced reinforcement, inappropriate detailing of beam-column members, and lack of lateral ties in joint panels. Observations based on earthquake-induced damages and experimental studies conducted on such buildings have revealed significant vulnerability of beam-column joints of bare moment-resisting frame structures. Shake table tests were conducted on selected three 1 : 4 reduced-scale three-story reinforced concrete (RC) moment-resisting frames, including one bare RC frame and two masonry-infilled RC frames, having relatively lower bay width-to-height ratio. The models were tested under multilevels of seismic excitations using natural acceleration time history of 1994 Northridge and also free vibration tests, to acquire the models’ dynamic characteristics, i.e., frequencies and elastic viscous damping, and seismic response parameters, i.e., roof displacement, interstory drift and interstory shear, and seismic response curves, in order to understand the role of masonry infill in the selected frames under moderate seismic actions. The inclusion of masonry infill avoided joint shear hinging of the frame. Additionally, the infill provided energy dissipation to the structure through masonry sliding over multiple cracks. This enabled the structure to control seismic displacement demand and resist relatively higher ground motions, yet limiting structural damages.

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Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Modern Bare and Masonry-Infilled RC SMRF Structures

Ahmad

Pervez

et al. 2019

Advances in Civil Engineering

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“…This condition indicates that most of the case study buildings experienced weak-column strong-beam behaviour, which did not comply with the seismic design provision. This behaviour can be interpreted based on severely-damaged and collapsed RC buildings during the 2011 Van earthquake in Turkey [63]. These joints are considered as the weakest link in a structural system due to the distribution of seismic loadings [64].…”

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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“…Buckling between adjacent stirrups is local buckling and buckling longer than stirrup spacing is global buckling [5]. An analysis of the impact of the 1992-2003 [6] and 2011 [7] earthquakes in Turkey on the behaviour of reinforced concrete columns showed that local and global bar buckling was caused by poor quality concrete and errors in the longitudinal and transverse reinforcement. According to [8], seven types of column damage can be identified and the most important reason for this is inadequate transverse reinforcement.…”

Section: Bucking Form Of the Rebarmentioning

confidence: 99%

Influence of Geometric Imperfections on Buckling Resistance of Reinforcing Bars during Inelastic Deformation

Korentz

2020

Materials

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This paper presents the results of numerical simulations on three main factors and their influence on the buckling resistance of reinforcing bars and on their behaviour in the range of postcritical deformations. These three factors are the shape of initial deformation, the amplitude of geometric imperfection and the slenderness of bars. The analysis was made of bars fixed on both sides for three initial shapes of deformation between adjacent stirrups, four amplitudes of geometric imperfections and eight bar slendernesses. The results of the numerical analyses carried out showed that the factors analysed have a very high influence on the inelastic buckling of the bars. The initial deformation shape, the radius of curvature and the slenderness of the bars have a significant influence on the buckling resistance of these bars and their longitudinal and transverse deformations. The research demonstrates that bars which are bent or compressed initially have a smaller resistance to buckling compared to straight bars, as the amplitude of geometric imperfections increases and the slenderness of the members increases. However, for the deformation shape of the bars, which is accompanied by shear forces, the drop in the buckling resistance of the members is small, and resistance to buckling for items with a small slenderness was higher than that of straight bars.

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Damages on reinforced concrete buildings due to consecutive earthquakes in Van

Cited by 64 publications

References 22 publications

Seismic Performance Evaluation of Modern Bare and Masonry-Infilled RC SMRF Structures

Seismic Performance Evaluation of Modern Bare and Masonry-Infilled RC SMRF Structures

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

Influence of Geometric Imperfections on Buckling Resistance of Reinforcing Bars during Inelastic Deformation

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