Seismic vulnerability assessment of confined masonry wall buildings

Ranjbaran, Fariman; Hosseini, Mahmood

doi:10.12989/eas.2014.7.2.201

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…Most previous studies 50,51 showed that the probability function of seismic capacity and seismic demand follow the log-normal distribution with expected ultimate failure state. As suggested by Ranjbaran and Hosseini, 52 Equation ( 12) can be rewritten as follows:…”

Section: Seismic Vulnerability Curvesmentioning

confidence: 99%

“…Most previous studies 50,51 showed that the probability function of seismic capacity and seismic demand follow the log‐normal distribution with expected ultimate failure state. As suggested by Ranjbaran and Hosseini, 52 Equation (12) can be rewritten as follows:

P_{f} goodbreak= normalΦ ([], \frac{A + B \ln (italicPGA) - \ln \overset{truê}{C}}{\sqrt{β_{D}^{2} + β_{C}^{2}}})

where

β_{D}

is the logarithmic standard deviation of the structural response probability function;

β_{C}

is the logarithmic standard deviation of the seismic capacity probability function; Φ[ x ] is the normal probability function; and

\overset{C}{true}

is the failure state value.…”

Section: Seismic Vulnerability Analysis Of the Aved Steel Frame Struc...mentioning

confidence: 99%

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Seismic vulnerability analysis of a high‐rise steel frame structure equipped with novel displacement‐amplified viscoelastic dampers

Ye,

Yang,

et al. 2024

Structural Design Tall Build

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SummaryThe energy dissipation capacity of conventional viscoelastic dampers (VEDs) cannot be fully exerted due to the relatively small inter‐story displacement of building structures. Thus, a novel VED with a displacement amplification mechanism based on the lever principle is developed in this study to achieve small displacement but high energy dissipation ability. First, the structural layout of an amplified viscoelastic damper (AVED) system is briefly introduced, and then the displacement amplification effect is described in detail. According to the working principle of the AVED and the relationship of force and geometric displacement in an actual frame structure, the restoring force theoretical formula of the corresponding amplified damper is derived. Based on the restoring force of the AVED and in combination with the secondary development function of the ABAQUS unit, a VUEL subroutine suitable for the explicit algorithm is programmed with the FORTRAN language. Then, the correctness of the subroutine is verified through a comparative analysis of the ABAQUS simulation and theoretically calculated results. Consequently, the vulnerability analysis of a high‐rise steel frame structure is conducted by using the incremental dynamic analysis (IDA) method, and the influence of the AVED on the seismic performance of the steel frame structure is quantitatively analyzed from the perspective of probability statistics. The analysis results show that compared with the VED structure, the failure probability of the AVED‐2 and AVED‐3 structures reaching the ultimate failure state at all levels is reduced by approximately 43% and 57%, respectively, and the collapse margin ratio (CMR) of structures under large earthquakes is increased by approximately 35% and 68%, respectively. This indicates that the AVED structures with displacement‐amplified dampers have a better effect on the seismic stability of tall steel frame structures under random seismic excitations. This study aims to provide comprehensive information for the seismic‐resistant design of tall buildings in earthquake‐prone regions.

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Section: Seismic Vulnerability Curvesmentioning

confidence: 99%

P_{f} goodbreak= normalΦ ([], \frac{A + B \ln (italicPGA) - \ln \overset{truê}{C}}{\sqrt{β_{D}^{2} + β_{C}^{2}}})

where

β_{D}

is the logarithmic standard deviation of the structural response probability function;

β_{C}

is the logarithmic standard deviation of the seismic capacity probability function; Φ[ x ] is the normal probability function; and

\overset{C}{true}

is the failure state value.…”

Section: Seismic Vulnerability Analysis Of the Aved Steel Frame Struc...mentioning

confidence: 99%

Seismic vulnerability analysis of a high‐rise steel frame structure equipped with novel displacement‐amplified viscoelastic dampers

Ye,

Yang,

et al. 2024

Structural Design Tall Build

View full text Add to dashboard Cite

show abstract

“…In the absence of empirical data, the analytical approach to fragility assessment is the preferred choice, also due to its simplicity in defining a direct relationship between the characteristics of index buildings, structural response to seismic action and damage effects (D'Ayala 2013). Analytical fragility functions have been developed specifically for CM buildings in various countries in the last decade (Ahmad et al 2012;Lovon et al 2013;Ranjbaran and Hosseini 2014;Ranjbaran and Kiyani 2015;Said et al 2016;Erberik et al 2019). These studies differ in their approaches in generating a numerical or analytical CM model, capacity assessment, definition of damage limits and fragility derivation.…”

Section: Analytical Fragility Assessmentmentioning

confidence: 99%

“…4, rocking is predominant on elastic deformation (Giordano et al 2020). Previous fragility studies of CM buildings are almost entirely based on PGA (Erberik, 2008;Ranjbaran and Hosseini, 2014;Ranjbaran and Kiyani, 2015;Erberik, Citiloglu and Erkoseoglu, 2019). On the other hand, fragility analysis based on Sa(T 1 ) focuses on the response caused by the maximum amplification in the elastic range of the structure and its corresponding fragility.…”

Section: Seismic Fragility Assessmentmentioning

confidence: 99%

Classification and seismic fragility assessment of confined masonry school buildings

Vatteri

D’Ayala

2021

Bull Earthquake Eng

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School buildings being a critical social infrastructure, assessment of their seismic behaviour is of utmost importance in ensuring safe schooling facilities in locations of high seismicity. This study presents two important aspects in analysing any existing building stock for seismic behaviour: the development of an appropriate taxonomy system and an appropriate analytical method to conduct fragility assessment. A detailed desk study of existing schools’ databases and tailored field investigation in Guwahati, Assam, situated in India’s highest seismic zone, reveal that the majority of school buildings can be categorised within the confined masonry (CM) typology. This study discusses first, the addition to the World Bank promoted Global Library of School Infrastructure taxonomy of the specific category relating to CM as to include the buildings under study, which are non-engineered CM buildings with flexible roofs. Identifying the density of confinement and quality of connections as critical parameters for the seismic response of these buildings, varying seismic design levels are defined in relation to these indicators. Secondly, the paper presents an approach for carrying out nonlinear static pushover analysis of these buildings with flexible diaphragms and elaborates on the criteria adopted for determining the performance drift limits in buildings with varying levels of seismic design. Numerical analysis for the capacity assessment of selected index buildings is carried out using a commercial software that enables nonlinear extreme loading analysis. Different failure mechanisms as a function of the level of confinement are identified and the performance range for three damage states for three index buildings is obtained by using the N2 method. The study shows the influence of both choices of performance indicators and intensity measure on the resulting fragility functions. Given the consistency of the educational building stock in Guwahati, the results can be used for investment on retrofit decision making at regional level.

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“…Conducting a structural analysis of heritage masonry structure is considered complicated [3,4]. Some studies discussed the seismic damage and vulnerability of old historical buildings affected by earthquake activities around the world [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Seismic Damage in Nativity Church in Bethlehem Using Pushover Analysis

Almassri¹,

Safiyeh²

2021

Structural Durability &Amp; Health Monitoring

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Seismic vulnerability assessment of confined masonry wall buildings

Cited by 10 publications

References 13 publications

Seismic vulnerability analysis of a high‐rise steel frame structure equipped with novel displacement‐amplified viscoelastic dampers

Seismic vulnerability analysis of a high‐rise steel frame structure equipped with novel displacement‐amplified viscoelastic dampers

Classification and seismic fragility assessment of confined masonry school buildings

Assessment of Seismic Damage in Nativity Church in Bethlehem Using Pushover Analysis

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