A proposal for seismic evaluation index of mid-rise existing RC buildings in Afghanistan

Naqi, Ahmad; Saito, Taiki

doi:10.1063/1.5005744

Cited by 3 publications

(3 citation statements)

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“…It is a software that can evaluate building using pushover analysis and time history records data and has been developed by the co-author for many years. Many researchers also used this program to evaluate buildings, for example to evaluate school building in Malaysia against Ranau earthquake [18], to seek for the behavior of reinforced concrete structure by time history approach [19], and even to make a proposal for midrise existing building index of seismic evaluation [20].…”

Section: Introduction Indonesia Is a Southeast Asia Country Lays On 4mentioning

confidence: 99%

Preliminary Seismic Performance-based Evaluation of Academic Reinforced Concrete Building in Yogyakarta based on Displacement Parameter

Maulana¹,

Faturrochman²,

Saito³

2019

Proceedings of the Third International Conference on Sustainable Innovation 2019 – Technology and Engineering (IcoSITE 2019)

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Periodical seismic safety evaluation for concrete buildings are necessary since they have been used for many years. Many approaches can be used to evaluate them, one of them is pushover analysis. This analysis is performed by applying incremental loads then reading the displacement that happen and comparing it to the response spectra demand to retrieve the performance point. Moreover, time history records can be used to determine the displacement appear in structure. This study aims to perform 3D evaluation of reinforced concrete buildings. The building sample was selected from academic building in Yogyakarta, Indonesia which has 7 storeys. The analysis was performed using STERA 3D software. Three timehistory records namely El Centro, Kobe, and Parkfield earthquakes were used to determine the displacement. The result shows the performance level of the building and the displacement resulted from inputting time history, compared to the displacement limit from ATC-40 and FEMA 356. The result shows that the preliminary performance level indicated with spectral displacement is achieved at 13 cm on pushover analysis which complies the 0.01 height limitation from ATC-40 and FEMA 356. Since it is a preliminary study, it is hoped that further study could consider more aspects such as ductility, prediction of failure positions, and comprehensive pushover analysis based on FEMA 356.

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Section: Introduction Indonesia Is a Southeast Asia Country Lays On 4mentioning

confidence: 99%

Preliminary Seismic Performance-based Evaluation of Academic Reinforced Concrete Building in Yogyakarta based on Displacement Parameter

Maulana¹,

Faturrochman²,

Saito³

2019

Proceedings of the Third International Conference on Sustainable Innovation 2019 – Technology and Engineering (IcoSITE 2019)

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“…The primary investigator, herein referred to as the first author, conducted structural analyses on masonry school buildings in Afghanistan [32]. During the investigation, it was observed that a significant disparity exists among existing equations in predicting the compressive strength of masonry.…”

Section: Introductionmentioning

confidence: 99%

Proposal of Empirical Equations for Masonry Compressive Strength: Considering the Compressive Strength Difference between Bricks and Mortar

Nazimi,

Castro,

Omi

et al. 2024

Buildings

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Solid brick masonry poses challenges in predicting compressive strength due to its non-homogeneous and anisotropic nature, compounded by variations in the properties of the constituent bricks and mortar. This research addresses this issue through secondary analysis and examining the interplay between brick-and-mortar compressive strengths. Contrary to existing empirical equations for predicting masonry compressive strength, regression analysis was conducted on test specimens categorized into two groups based on the relative strength of the constitutive materials: Group 1, masonry specimens with bricks stronger than mortar (fb > fj), and Group 2, specimens where the mortar has higher compressive strength than the bricks (fj > fb). Additionally, the calculated impact of factors like the slenderness ratio and mortar-to-brick joint thickness ratio on masonry compressive strength highlights the need for more precise compressive strength predictions. The results emphasize the importance of considering the individual contributions of bricks and mortar to the overall compressive strength, shedding light on how these components affect structural behavior.

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“…Now a days, with rapid increase of commercial and residential buildings, engineers employ the reinforced concrete frames together with the brick masonry wall to satisfy the market demands. Naqi and Saito (2017) evaluated the building performance of RC low-rise buildings with infill reinforced masonry and proposed a damage index to screen the vulnerable buildings [7]. Nasiry and Kang (2017) conducted a primary research about people awareness of natural disasters such as earthquake and ways how to stay safe during an earthquake to mitigate the earthquake disaster and enhance the public awareness [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Brick Masonry Infill Walls on Seismic Performance of Reinforced Concrete Frame Structures in Afghanistan

Sharafi¹,

Naqi²,

Saito³

2021

1st Croatian Conference on Earthquake Engineering

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Reinforced Concrete (RC) frame structures are designed and constructed in the major parts of Afghanistan. Meanwhile, the brick masonry wall is one of the most common material that is used as internal and external walls inside the reinforced concrete frame for the building construction. The brick masonry infill wall is defined as a non-structural element for the common structural design software, where only weight is considered, not its strength or stiffness. The Hindu-Kush earthquake, October 2015 that happened in Afghanistan showed that, the buildings with brick masonry walls had less damage or small cracks on the walls. While the buildings without brick masonry walls (bare frames) had serious damage or shear failure on columns. Therefore, the current research aims to find out the effects of brick masonry walls to the seismic performance of RC frame structures by conducting earthquake response analyses of the frame models with and without brick masonry walls. The structural model is based on an actual school building (the 24-classroom school building project that has been designed as a special moment resisting frame with three-stories and constructed in Kabul, Afghanistan). Input earthquake ground motions are generated artificially based on the Afghanistan design spectrum and the phase spectrum of actual earthquake records, such as 1940 El Centro earthquake, 1995 Kobe earthquake and 2003 Bamearthquake. The nonlinear frame analysis program, STERA 3D, developed by one of the authors is used for the analysis, where the backbone curve of the masonry element is defined including the deterioration of the bearing capacity after yielding. The performance of the frame model is examined to verify the effects of masonry elements from the natural period, the story drift and the damage of the frame and brick masonry walls.

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A proposal for seismic evaluation index of mid-rise existing RC buildings in Afghanistan

Cited by 3 publications

References 1 publication

Preliminary Seismic Performance-based Evaluation of Academic Reinforced Concrete Building in Yogyakarta based on Displacement Parameter

Preliminary Seismic Performance-based Evaluation of Academic Reinforced Concrete Building in Yogyakarta based on Displacement Parameter

Proposal of Empirical Equations for Masonry Compressive Strength: Considering the Compressive Strength Difference between Bricks and Mortar

Effect of Brick Masonry Infill Walls on Seismic Performance of Reinforced Concrete Frame Structures in Afghanistan

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