Site specific probabilistic seismic hazard analysis at Dubai Creek on the west coast of UAE

Shama, Ayman A.

doi:10.1007/s11803-011-0053-5

Cited by 27 publications

(9 citation statements)

References 23 publications

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“…Zhu et al ., ; Bommer and Acevedo, ). The site of the reference structures (Dubai, UAE) is vulnerable to earthquakes originated from different seismic sources, namely long‐distance events along with earthquakes from local seismic faults (Mwafy et al ., ; Aldama‐Bustos et al ., ; Shama, ; Khan et al ., ). There is a characteristic difference in earthquake‐induced response from the above‐mentioned two scenarios.…”

Section: Earthquake Ground Motions and Performance Indicatorsmentioning

confidence: 99%

Seismic performance and cost‐effectiveness of high‐rise buildings with increasing concrete strength

Mwafy

Nadeem

Khaled

2014

Structural Design Tall Build

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Summary The relationship between the seismic performance and economics of high‐rise buildings when designed to different material strengths is investigated in this paper. To represent the modern high‐rise construction, five 60‐story reinforced concrete buildings with varying concrete strengths, ranging from 45 MPa to 110 MPa, are designed and detailed to fine accuracy keeping almost equal periods of vibration. Detailed fiber‐based simulation models are developed to assess the relative seismic performance of the reference structures using incremental dynamic analyses and fragility functions. It is concluded that a considerable saving in construction cost and gain in useable area are attained with increasing concrete strength. The safety margins of high‐strength concrete in tall structures may exceed those of normal‐strength concrete buildings, particularly at high ground motion intensity levels. The recommendations of this systematic study may help designers to arrive at cost‐effective designs for high‐rise buildings in earthquake‐prone regions without jeopardizing safety at different performance levels. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Earthquake Ground Motions and Performance Indicatorsmentioning

confidence: 99%

Seismic performance and cost‐effectiveness of high‐rise buildings with increasing concrete strength

Mwafy

Nadeem

Khaled

2014

Structural Design Tall Build

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“…The site of the reference steel buildings (Dubai, UAE) is characterized by longdistance events generated from Southern Iran and the earthquakes from the local seismic faults (Aldama-Bustos et al, 2009;Mwafy et al, 2006;Shama, 2011). The present study focuses on severe distant earthquake scenarios based on the conclusions drawn from recent fragility assessment studies carried out on multi-story buildings with varying heights, which indicated a higher impact on the response of the buildings with long-distance events (Mwafy et al, 2006).…”

Section: Earthquake Ground Motions Uncertaintymentioning

confidence: 99%

Seismic Design and Performance of High-Rise Steel Buildings under Various International Design Codes

Nadeem¹,

Alam²

2015

Structures Congress 2015

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The increase in the number of seismic events and their devastations in the recent past has assisted in many developments in seismic codes of various international standards. Codes adopt conventional elastic methods in the design of structures to estimate the strength and deformation demand employing seismic design factors to represent the nonlinear behavior of the structure. Four typical high-rise steel buildings of 8, 12, 16 and 20 stories are designed and detailed using various seismic codes. Seismic response of the reference buildings is assessed with detailed fiber-based models using inelastic pushover and incremental dynamic analyses subject to 20 strong seismic records. The proposed study provides comparisons between different seismic design codes for the range of the reference buildings at different performance levels. This study may help the designers in optimizing their design in the seismic regions and provide an insight to assess the seismic performance and predict the behavior at different performance levels.

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“…This area was previously considered a non-seismic region [28]. However, based on several recent seismic hazard studies, the UAE is currently regarded as a low-to-medium seismicity region [29][30][31][32][33]. It is also noteworthy that the design approach and criteria were updated in other regions, such as the U.S., after major earthquakes (e.g., Loma Prieta in 1989, [8]).…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Assessment of an Existing Multi-Span RC Bridge Equipped with Risk Mitigation Systems

Ghazal

Mwafy

2022

Buildings

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The vulnerability of bridges and the effectiveness of suitable mitigation techniques in regions exposed to different seismic scenarios, while lacking reliable fragility assessment studies for existing bridge inventory, need focused attention. Further, while several retrofit techniques were proposed for improving the seismic performance of existing bridges, the limitations of such approaches need further investigation. Thus, this study assesses the seismic vulnerability of a benchmark structure representing pre-seismic code multi-span bridges in an earthquake-prone region before and after the retrofit to mitigate earthquake-related losses. The numerical modeling approaches of the selected bridge and retrofit systems were verified using the results of previous experimental studies. Detailed three-dimensional fiber-based (3DFB) simulation models were then developed to assess the seismic response of the benchmark bridge under the effects of diverse earthquake records representing far-field and near-source seismic scenarios in both longitudinal and transverse directions. The obtained results from several inelastic pushover analyses (IPAs) and incremental dynamic analyses (IDAs) confirmed the vulnerability of the benchmark bridge and the pressing need for mitigation actions to reduce the expected seismic losses under different seismic scenarios. Higher damage probabilities were observed under the effects of far-source events and at lower intensities than their near-field counterparts. Based on the probabilistic assessment study, it is concluded that retrofitting the bridge with buckling restrained braces (BRBs) is an effective mitigation measure to increase the lateral strength and overcome the high curvature ductility (CD) demands observed in bents, particularly under the most critical seismic scenario. The study provides insight into the impacts of contemporary retrofit techniques on improving the seismic performance of substandard bridges and presents a range of fragility functions for the assessment and mitigation of earthquake risks.

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Site specific probabilistic seismic hazard analysis at Dubai Creek on the west coast of UAE

Cited by 27 publications

References 23 publications

Seismic performance and cost‐effectiveness of high‐rise buildings with increasing concrete strength

Seismic performance and cost‐effectiveness of high‐rise buildings with increasing concrete strength

Seismic Design and Performance of High-Rise Steel Buildings under Various International Design Codes

Seismic Fragility Assessment of an Existing Multi-Span RC Bridge Equipped with Risk Mitigation Systems

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