The influence of ground motion duration on the energy based assessment of buildings with infill walls

Balun, Bilal

doi:10.1016/j.istruc.2023.02.011

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Also, the failure of infill walls is influenced by the orientation of mortar joints. Infill walls provide a bracing effect when used in a structure, but it is very important to include the stiffness of infill walls in the design to prevent unwanted failure [26][27][28]31].…”

Section: Effect Of Infill Walls In Buildingmentioning

confidence: 99%

Seismic Performance Evaluation and Comparative Study of Reinforced Concrete Building on a Sloped Terrain with Regular Building by Considering the Effect of URM Infill Walls

Rc,

Rani,

Suleiman

et al. 2023

Buildings

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This paper focuses on the seismic vulnerabilities of multi-storey buildings in hilly regions like Sikkim and Uttarakhand, where rapid construction is driven by population growth and tourism. The study particularly evaluates step-back buildings on hilly slopes, comparing their vulnerability to standard buildings on flat terrain. Using non-linear analysis to assess structural aspects like displacement and storey drift ratio, the research examines the performance of these buildings in both uphill and downhill orientations against typical three-storey and six-storey structures, respectively. The findings indicate that step-back buildings, especially those without infill walls, are more susceptible to seismic damage. For instance, on the uphill side, a step-back building shows a mean drift ratio 15.11% greater in the X direction and 4.57% greater in the Y direction compared to a three-storey regular building (3SR). This vulnerability is exacerbated when infill walls are absent, with mean drift ratios in step-back buildings being 74.75% and 33% higher in the X and Y directions, respectively. Moreover, at a seismic acceleration of 0.36 g, the mean displacement of a step-back building is 83% greater in the X direction and 51% greater in the Y direction than those with infill walls (SBIN), underscoring the significant role of infill walls in enhancing earthquake resilience. The study also highlights that short columns in step-back buildings are particularly prone to severe damage, especially just above the uppermost foundation level. While infill walls offer substantial mitigation of damage at the Design Basis Earthquake (DBE) level, at the Maximum Considered Earthquake (MCE) level, step-back buildings still endure severe damage compared to regular buildings with infill walls. Consequently, the research establishes that step-back buildings demonstrate greater vulnerability at DBE levels without infill walls and are more susceptible to damage than flat terrain buildings at MCE levels, emphasizing the need for careful design and reinforcement strategies in earthquake-prone hilly areas.

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Section: Effect Of Infill Walls In Buildingmentioning

confidence: 99%

Seismic Performance Evaluation and Comparative Study of Reinforced Concrete Building on a Sloped Terrain with Regular Building by Considering the Effect of URM Infill Walls

Rc,

Rani,

Suleiman

et al. 2023

Buildings

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“…Additionally, under reversed cyclic loads, the brittle nature of masonry infill materials frequently imposes greater harm on the hysteretic behavior of structures and results in significant localized damage to the nearby braced structural parts. As a result, design engineers should include in their studies how infills as well as the ground motion duration [14] would affect the overall structural performance. In recent times, many studies have included the effect of the presence of infill walls on the seismic response of different buildings, but they did not discuss how the definition of the response modification factor as a constant in all building codes is too conservative.…”

Section: Introductionmentioning

confidence: 99%

Effect of Infills on the Response Modification Factor for Infilled Reinforced Concrete Frame Buildings

Helmy,

Okail,

Zidan

2023

Civ Eng J

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RC frames with unreinforced masonry infill walls are the most common type of building. Unreinforced masonry walls are often not considered by engineers in the design process, although walls and frames interact during strong ground motion, leading to structural responses deviating radically from what is expected in the design. Under lateral load, reinforced concrete confining members (frames) act in tension or compression, depending on the direction of the lateral seismic pressures. Meanwhile, masonry walls act as diagonal struts prone to compression. This research aims to develop the effect of masonry infills and their distribution on the value of the resulting response modification factor. For this purpose, a parametric study was performed on five, seven, and ten-story' buildings modeled as bare and infilled frames. Infill ratio, panel aspect ratio, unidirectional eccentricity, and bidirectional eccentricities were the parameters investigated. Each proposed model's resulting response modification factor was compared to the value cited in different international codes. It was concluded that this value differs depending on several parameters and cannot be constant for a certain structural system. The novelty of this research is the deduction of a general equation to calculate the response modification factor as a function of the percentage of infills and the eccentricity, while presenting two different methods to calculate it. Doi: 10.28991/CEJ-2023-09-12-09 Full Text: PDF

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Shake-table test on dynamic response of prestressed high-strength concrete pipe piles under Soil–Structure interaction

Zhang

Wang

Lyu

et al. 2023

Soil Dynamics and Earthquake Engineering

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The influence of ground motion duration on the energy based assessment of buildings with infill walls

Cited by 4 publications

References 29 publications

Seismic Performance Evaluation and Comparative Study of Reinforced Concrete Building on a Sloped Terrain with Regular Building by Considering the Effect of URM Infill Walls

Seismic Performance Evaluation and Comparative Study of Reinforced Concrete Building on a Sloped Terrain with Regular Building by Considering the Effect of URM Infill Walls

Effect of Infills on the Response Modification Factor for Infilled Reinforced Concrete Frame Buildings

Shake-table test on dynamic response of prestressed high-strength concrete pipe piles under Soil–Structure interaction

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