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Dr. Yasser Ibrahim
Chairman of Engineering Management Dept.

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Review
Published: 16 June 2021 in Sensors
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In the last three decades, smart materials have become popular. The piezoelectric materials have shown key characteristics for engineering applications, such as in sensors and actuators for industrial use. Because of their excellent mechanical-to-electrical and vice versa energy conversion properties, piezoelectric materials with high piezoelectric charge and voltage coefficient have been tested in renewable energy applications. The fundamental component of the energy harvester is the piezoelectric material, which, when subjected to mechanical vibrations or applied stress, induces the displaced ions in the material and results in a net electric charge due to the dipole moment of the unit cell. This phenomenon builds an electric potential across the material. In this review article, a detailed study focused on the piezoelectric energy harvesters (PEH’s) is reported. In addition, the fundamental idea about piezoelectric materials, along with their modeling for various applications, are detailed systematically. Then a summary of previous studies based on PEH’s other applications is listed, considering the technical aspects and methodologies. A discussion has been provided as a critical review of current challenges in this field. As a result, this review can provide a guideline for the scholars who want to use PEH’s for their research.

ACS Style

Abdul Aabid; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Bisma Parveez; Nagma Parveen; Jalal Mohammed Zayan. A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications. Sensors 2021, 21, 4145 .

AMA Style

Abdul Aabid, Abdul Raheman, Yasser Ibrahim, Asraar Anjum, Meftah Hrairi, Bisma Parveez, Nagma Parveen, Jalal Mohammed Zayan. A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications. Sensors. 2021; 21 (12):4145.

Chicago/Turabian Style

Abdul Aabid; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Bisma Parveez; Nagma Parveen; Jalal Mohammed Zayan. 2021. "A Systematic Review of Piezoelectric Materials and Energy Harvesters for Industrial Applications." Sensors 21, no. 12: 4145.

Short communication
Published: 06 June 2021 in Case Studies in Construction Materials
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Due to the expansion of cities through megaprojects and the increase in populations in large cities, many buildings are constructed beside train tracks. Trains passing nearby buildings cause ground vibrations that may affect the structures and their foundations. In this research, a detailed 3-D finite element analysis is conducted on a ten-story reinforced concrete framed structure resting on a raft foundation using ABAQUS. The soil profile consists of silty clay for 10 m followed by dense sand for 40 m. The soil block considered in the analysis has plan dimensions of 100m × 100m. The train loads are modeled using moving point loads. The train track is considered at different distances from the building. The effect of the train speed and its track distance from the building on the response of the structure with its foundations are investigated. Mitigation techniques including open trenches and in-filled foam trenches are considered in order to mitigate the effect of vibrations induced by trains on the adjacent building. The results showed that these techniques are efficient in reducing the train-induced vibrations transmitted to the soil and the adjacent building. The average reduction percentage in acceleration was 61.29 % and 57.39 % when using in-filled foam trench and open trench mitigation techniques, respectively.

ACS Style

Yasser E. Ibrahim; Marwa Nabil. Finite element analysis of multistory structures subjected to train-induced vibrations considering soil-structure interaction. Case Studies in Construction Materials 2021, 15, e00592 .

AMA Style

Yasser E. Ibrahim, Marwa Nabil. Finite element analysis of multistory structures subjected to train-induced vibrations considering soil-structure interaction. Case Studies in Construction Materials. 2021; 15 ():e00592.

Chicago/Turabian Style

Yasser E. Ibrahim; Marwa Nabil. 2021. "Finite element analysis of multistory structures subjected to train-induced vibrations considering soil-structure interaction." Case Studies in Construction Materials 15, no. : e00592.

Short communication
Published: 15 May 2021 in Case Studies in Construction Materials
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In the design of cold-formed steel (CFS) buildings, sheathings are used to provide lateral resistance to seismic or wind load. Many researchers have thoroughly studied the basic behavior of different sheathing (including walls sheathed with plywood, oriented strand board, gypsum wallboard, gypsum sheathing board, steel sheet sheathing, and fiberboard) with different thicknesses. However, despite many studies, the examination of existing experimental studies demonstrates that the lateral bracing and stiffness provided by the sheathing are generally ignored, and sheathing is provided as a non-structural component. This study aims at that neglected aspect. In this study, cold-formed steel shear wall (CFSSW) response has been investigated with varied thickness of hardboard sheathing used as a structural element. The main aim was to determine the contribution of sheathing in resisting lateral forces. For this purpose, three full-scale specimens (i) frame without sheathing, (ii) frame sheathed with 4 mm thick hardboard, (iii) frame sheathed with 10 mm thick hardboard were tested using a uni-directional shake table. The sheathing was screw-fastened to the cold-formed studs and tracked for the development of shear stiffness and strength in the wall system. The test results revealed that in addition to increasing the lateral stiffness of the structure, the hardboard sheathing also acts as an efficient bracing system. However, some minor but recoverable damages were also noticed. In addition, stud local buckling failure mode was observed, and it could be caused by the low anchor stiffness of using cleats instead of hold-downs. It is also important to mention that the number of tests performed in the current study was limited, and further similar research needs to be carried out before generalizing the results.

ACS Style

Yasser E. Ibrahim; Asif Hameed; Asad Ullah Qazi; Ali Murtaza Rasool; Muhammad Farhan Latif; Mohsin Usman Qureshi. Experimental response of cold-formed steel stud shear wall with hardboard sheathing under seismic loading. Case Studies in Construction Materials 2021, 15, e00574 .

AMA Style

Yasser E. Ibrahim, Asif Hameed, Asad Ullah Qazi, Ali Murtaza Rasool, Muhammad Farhan Latif, Mohsin Usman Qureshi. Experimental response of cold-formed steel stud shear wall with hardboard sheathing under seismic loading. Case Studies in Construction Materials. 2021; 15 ():e00574.

Chicago/Turabian Style

Yasser E. Ibrahim; Asif Hameed; Asad Ullah Qazi; Ali Murtaza Rasool; Muhammad Farhan Latif; Mohsin Usman Qureshi. 2021. "Experimental response of cold-formed steel stud shear wall with hardboard sheathing under seismic loading." Case Studies in Construction Materials 15, no. : e00574.

Review
Published: 10 May 2021 in Actuators
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With the breadth of applications and analysis performed over the last few decades, it would not be an exaggeration to call piezoelectric materials “the top of the crop” of smart materials. Piezoelectric materials have emerged as the most researched materials for practical applications among the numerous smart materials. They owe it to a few main reasons, including low cost, high bandwidth of service, availability in a variety of formats, and ease of handling and execution. Several authors have used piezoelectric materials as sensors and actuators to effectively control structural vibrations, noise, and active control, as well as for structural health monitoring, over the last three decades. These studies cover a wide range of engineering disciplines, from vast space systems to aerospace, automotive, civil, and biomedical engineering. Therefore, in this review, a study has been reported on piezoelectric materials and their advantages in engineering fields with fundamental modeling and applications. Next, the new approaches and hypotheses suggested by different scholars are also explored for control/repair methods and the structural health monitoring of engineering structures. Lastly, the challenges and opportunities has been discussed based on the exhaustive literature studies for future work. As a result, this review can serve as a guideline for the researchers who want to use piezoelectric materials for engineering structures.

ACS Style

Abdul Aabid; Bisma Parveez; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Nagma Parveen; Jalal Mohammed Zayan. A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities. Actuators 2021, 10, 101 .

AMA Style

Abdul Aabid, Bisma Parveez, Abdul Raheman, Yasser Ibrahim, Asraar Anjum, Meftah Hrairi, Nagma Parveen, Jalal Mohammed Zayan. A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities. Actuators. 2021; 10 (5):101.

Chicago/Turabian Style

Abdul Aabid; Bisma Parveez; Abdul Raheman; Yasser Ibrahim; Asraar Anjum; Meftah Hrairi; Nagma Parveen; Jalal Mohammed Zayan. 2021. "A Review of Piezoelectric Material-Based Structural Control and Health Monitoring Techniques for Engineering Structures: Challenges and Opportunities." Actuators 10, no. 5: 101.

Short communication
Published: 13 April 2021 in Case Studies in Construction Materials
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Pervious concrete is a special type of concrete used for stormwater management due to its high porosity and permeability. However, the large pores in pervious concrete resulted to its low mechanical strength. Moreover, the emissions of greenhouse gases from Portland cement (PC) production are high and contribute to climate changes leading to climate change. Calcium carbide waste (CCW) and rice husk ash (RHA) were used as supplementary cementitious material to partially replace Portland cement by 5%, 10 %, 15 %, and 20 %. Response Surface Methodology was used to design the experiments and develop models for predicting the water absorption and permeability of PC. The properties of the developed pervious concrete like water permeability and water absorption were investigated. The most vital property of the pervious concrete is water-permeability. The result findings showed that both RHA and CCW have negative effect on the durability of PC, with RHA having the worst effect. The RSM models developed showed a high degree of correlation between the variables and the responses. The optimized variables which give the best durability performance was a combination of 0% RHA and 5% CCW having the following properties, water permeability between 0.96 cm/s and water absorption of 4.338 %. The developed models can be used for predicting the permeability and water absorption capacity of pervious concrete.

ACS Style

Musa Adamu; Kingsley Oyime Ayeni; Sadi Ibarahim Haruna; Yasser El-Husseini Ibrahim Mansour; Sani Haruna. Durability performance of pervious concrete containing rice husk ash and calcium carbide: A response surface methodology approach. Case Studies in Construction Materials 2021, 14, e00547 .

AMA Style

Musa Adamu, Kingsley Oyime Ayeni, Sadi Ibarahim Haruna, Yasser El-Husseini Ibrahim Mansour, Sani Haruna. Durability performance of pervious concrete containing rice husk ash and calcium carbide: A response surface methodology approach. Case Studies in Construction Materials. 2021; 14 ():e00547.

Chicago/Turabian Style

Musa Adamu; Kingsley Oyime Ayeni; Sadi Ibarahim Haruna; Yasser El-Husseini Ibrahim Mansour; Sani Haruna. 2021. "Durability performance of pervious concrete containing rice husk ash and calcium carbide: A response surface methodology approach." Case Studies in Construction Materials 14, no. : e00547.

Journal article
Published: 01 April 2021 in Recycling
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Recycled concrete aggregate (RCA) collected from the demolition of old reinforced concrete structures can be reused to prepare structural and non-structural concrete, thereby protecting the environment by preserving natural resources. This study explores RCA’s use, collected from the crushed concrete of different building projects in Riyadh, to manufacture fresh self-compacting concrete (SCC) and investigate its properties in the fresh and hardened state. Four SCC mixes were prepared by replacing natural aggregate (NA) with RCA at 0%, 25%, 50%, and 75% replacement levels. The water-cement (w/c) ratio was maintained constant at 0.38 for all the mixes. Slump Flow, J-ring, and V-funnel tests were performed on the SCC mixes in the fresh state, and the compressive strength of hardened concrete was determined after seven, 14, and 28 days. Water absorption and split tensile tests were also carried out for all the mixes. The findings revealed that it is possible to reach compressive strengths higher than 40 MPa at 28 days for RCA replacement level of 75% by using a superplasticizer and low w/c ratio. The decrease in compressive strength concerning the SCC-NA mix was 25% for 75% replacement level. The highest split tensile strength at 28 days was around 3.3 MPa for a 50% replacement level. The lowest water absorption was 3.2% for SCC-NA, which was gradually increased and was highest at 5.6% for 75% replacement level.

ACS Style

Ihab Katar; Yasser Ibrahim; Mohammad Abdul Malik; Shabir Khahro. Mechanical Properties of Concrete with Recycled Concrete Aggregate and Fly Ash. Recycling 2021, 6, 23 .

AMA Style

Ihab Katar, Yasser Ibrahim, Mohammad Abdul Malik, Shabir Khahro. Mechanical Properties of Concrete with Recycled Concrete Aggregate and Fly Ash. Recycling. 2021; 6 (2):23.

Chicago/Turabian Style

Ihab Katar; Yasser Ibrahim; Mohammad Abdul Malik; Shabir Khahro. 2021. "Mechanical Properties of Concrete with Recycled Concrete Aggregate and Fly Ash." Recycling 6, no. 2: 23.

Journal article
Published: 25 March 2021 in Education Sciences
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Motivation to study engineering in undergraduate study is of great importance to students. It encourages undergraduate students to enroll in an engineering program and continue their studies without dropping out. Male students enroll in engineering programs with large numbers compared to female students in many parts of the world. In Saudi Arabia, there were limited engineering programs for female students. In this research, the motivation to study engineering is studied and compared between male and female students in the College of Engineering at Prince Sultan University, the first private university in Saudi Arabia. The study was conducted through a detailed survey distributed to 41 male engineering management students and 45 female architectural engineering students. These students’ performance and experience were considered and compared considering their gender to evaluate their persistence toward engineering study. According to the results obtained, the highest degree of the parents had a considerable effect on the selection of engineering major for male and female students. Most surveyed male and female students select an engineering major because of its positive impact on the community and its role in improving the way of life. Male students may differ in that they considered engineering in order to start their own business after graduation with a higher percentage compared to female students. There was a very limited role of the school in selecting engineering majors according to the surveyed male and female students. This role should be enhanced and utilized to encourage more female students to consider engineering majors in their college study.

ACS Style

Wafa Labib; Amal Abdelsattar; Yasser Ibrahim; Abdelhakim Abdelhadi. What Motivates Students to Study Engineering? A Comparative Study between Males and Females in Saudi Arabia. Education Sciences 2021, 11, 147 .

AMA Style

Wafa Labib, Amal Abdelsattar, Yasser Ibrahim, Abdelhakim Abdelhadi. What Motivates Students to Study Engineering? A Comparative Study between Males and Females in Saudi Arabia. Education Sciences. 2021; 11 (4):147.

Chicago/Turabian Style

Wafa Labib; Amal Abdelsattar; Yasser Ibrahim; Abdelhakim Abdelhadi. 2021. "What Motivates Students to Study Engineering? A Comparative Study between Males and Females in Saudi Arabia." Education Sciences 11, no. 4: 147.

Technical paper
Published: 16 February 2021 in Structural Concrete
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In this research, the influence of using steel fibers on the shear action of reinforced concrete beams, made of recycled concrete aggregate (RCA), was investigated through experiment and finite element analysis (FEA). First, 12 reinforced concrete beams were tested with varying amounts of steel fibers. These beams contained normal concrete aggregate (NCA) as reference beams besides RCA beams. All beam models had the same 150 mm x 250 mm cross‐section and 2000 mm length. The beams had three bars of 16 mm reinforcement and two bars of 12 mm reinforcement at its bottom and top, respectively. Three replacement ratios of recycled aggregate (RA) were considered; 0%, 30%, and 70%. Moreover, steel fibers were introduced in the beams at 0%, 0.5%, 1%, and 1.5% content by volume. The beams were evaluated under a four‐point bending test while the load‐deflection diagram and failure load for all beams were considered as the criteria for comparing the shear response of different beams. A thorough FEA was carried out using ANSYS to model these beams. The FEA results were compared with the outcomes of the experimental tests, and a clear agreement was obtained. The results showed that using steel fibers improved the shear strength of the beams by 2.94%, 15.88%, and 34.71% for NAC beams, 1.39%, 11.11%, and 16.67% for 30% RCA beams, and 24.53%, 40.57%, and 59.44% for 70% RCA beams, respectively by using steel fibers with ratios of 0.5%, 1%, and 1.5%, respectively.

ACS Style

Yasser E. Ibrahim; Khaled Fawzy; Mohamed A. Farouk. Effect of steel fiber on the shear behavior of reinforced recycled aggregate concrete beams. Structural Concrete 2021, 22, 1861 -1872.

AMA Style

Yasser E. Ibrahim, Khaled Fawzy, Mohamed A. Farouk. Effect of steel fiber on the shear behavior of reinforced recycled aggregate concrete beams. Structural Concrete. 2021; 22 (3):1861-1872.

Chicago/Turabian Style

Yasser E. Ibrahim; Khaled Fawzy; Mohamed A. Farouk. 2021. "Effect of steel fiber on the shear behavior of reinforced recycled aggregate concrete beams." Structural Concrete 22, no. 3: 1861-1872.

Journal article
Published: 25 November 2019 in Alexandria Engineering Journal
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In this research, a detailed 3-D finite element model is developed by ABAQUS package for an existing six-story reinforced concrete framed structure in Saudi Arabia to study its response under blast loads. The building is office building designed for dead, live, wind and seismic loads. The design wind speed is 161 km/h while the mapped maximum considered earthquake spectral response acceleration at a short period and at a period of 1-second are 0.12 g and 0.034 g, respectively. Concrete damage plasticity model was used to model the concrete elements. The ‘brittle cracking’ concrete model was used to represent column removal in front of the explosion. The metal plasticity model was used to represent the steel. The model is exposed to blast loading with a 1.0 ton (2204.623 lb) of TNT at a distance of 5 m from the building. Another scenario was considered if the blast load is 10 m from the building to investigate the effect of the standoff distance. The structural vulnerability is assessed and compared. Alternative uncommon structural design of external columns is considered using composite cross section, which uses steel casing around concrete section. This uncommon design gave better results in terms of mitigating blast load effects on structures.

ACS Style

Yasser E. Ibrahim; Marwa Nabil. Assessment of structural response of an existing structure under blast load using finite element analysis. Alexandria Engineering Journal 2019, 58, 1327 -1338.

AMA Style

Yasser E. Ibrahim, Marwa Nabil. Assessment of structural response of an existing structure under blast load using finite element analysis. Alexandria Engineering Journal. 2019; 58 (4):1327-1338.

Chicago/Turabian Style

Yasser E. Ibrahim; Marwa Nabil. 2019. "Assessment of structural response of an existing structure under blast load using finite element analysis." Alexandria Engineering Journal 58, no. 4: 1327-1338.

Conference paper
Published: 05 July 2019 in Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020)
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Recent terrorist attacks on important buildings raised the significance of analysis of structures under blast loads in order to seek mitigations measures to have safer structures under such threats. Most of recent studies consider the superstructure only since it is the major part affected by the blast loads. However, the foundations may be affected severely as well. This can make the superstructure repair is impractical or inefficient. In this research, detailed finite element analysis using ABAQUS was used to study the effect of blast loads on the response of soil and nine reinforced concrete piles buried in the soil and connected by a 10 m × 10 m × 1.0 m reinforced concrete raft. The piles have a 0.6 m diameter and a length of 20 m. Drucker-Prager Cap model was used to model the soil behavior. The model accounts for soil hardening and softening and stress path dependence. The raft and piles were modelled using 8-node solid elements with reduced integration. The concrete damage plasticity model was used to model the reinforced concrete material for the pile and raft. The blast load was considered through several explosive weights of TNT at a height of 0.66 m above ground surface. The effect of standoff distance was studied through five different distances from the raft edge. Finally, observations and recommendations were provided to enhance the response of pile foundations under blast loads.

ACS Style

Yasser E. Ibrahim; Marwa Nabil. Finite Element Analysis of Pile Foundations Under Surface Blast Loads. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) 2019, 446 -460.

AMA Style

Yasser E. Ibrahim, Marwa Nabil. Finite Element Analysis of Pile Foundations Under Surface Blast Loads. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020). 2019; ():446-460.

Chicago/Turabian Style

Yasser E. Ibrahim; Marwa Nabil. 2019. "Finite Element Analysis of Pile Foundations Under Surface Blast Loads." Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) , no. : 446-460.

Research article
Published: 01 April 2019 in Advances in Civil Engineering
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Local measurement of deformations of a soil specimen has become inevitable for accurate determination of soil stiffness in triaxial tests. Although there are now many devices that can be used to perform this task, each has its own advantages and limitations that render development of new devices with better desirable features. This paper presents an innovative device called spring deformation gauge (SDG) that has many advantages over many of the existing devices and can be readily manufactured in both research and commercial laboratories. The device is based on using a highly flexible, yet very strong metal strip of spring steel secured between two stiff, stainless steel L-shaped legs; the spring strip is provided with four strain gauges. With this arrangement, local deformation of a specimen is transferred into significant bending in the metal strip and elongation or shortening of the strain gauges. In addition to being very cost effective, the SDG is characterized by the ability to control both range and resolution of measured deformation, its linear output, and a clever pinning mechanism that protects it from being damaged when it goes out of range. Success of the SDG was demonstrated in a true K0 test on carbonate sand.

ACS Style

Mostafa A. Ismail; Yasser E. Ibrahim. Spring Deformation Gauge for Measuring Local Deformations in Triaxial Apparatus. Advances in Civil Engineering 2019, 2019, 1 -9.

AMA Style

Mostafa A. Ismail, Yasser E. Ibrahim. Spring Deformation Gauge for Measuring Local Deformations in Triaxial Apparatus. Advances in Civil Engineering. 2019; 2019 ():1-9.

Chicago/Turabian Style

Mostafa A. Ismail; Yasser E. Ibrahim. 2019. "Spring Deformation Gauge for Measuring Local Deformations in Triaxial Apparatus." Advances in Civil Engineering 2019, no. : 1-9.

Journal article
Published: 14 March 2019 in Education Sciences
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This study aims to use group technology to classify students at the classroom level into clusters according to their learning style preferences. Group technology is used, due to the realization that many problems are similar, and that by grouping similar problems, single solutions can be found for a set of problems. The Felder and Silverman style, and the index learning style (ILS) are used to find student learning style preferences; students are grouped into clusters based on the similarities of their preferences, by using multivariate statistical analysis. Based on the developed groups, instructors can use the proper teaching style to teach their students. The formation of clusters based on the statistical analyses of two sets of data collected from students of two classes at the same level, belonging to same engineering department indicates that each class has different learning style preferences. This is an eye-opener to educators, in that different teaching styles can be used for their students, based on the students’ learning styles, even though the students seem to have a common interest.

ACS Style

Abdelhakim Abdelhadi; Yasser Ibrahim; Mohammad Nurunnabi. Investigating Engineering Student Learning Style Trends by Using Multivariate Statistical Analysis. Education Sciences 2019, 9, 58 .

AMA Style

Abdelhakim Abdelhadi, Yasser Ibrahim, Mohammad Nurunnabi. Investigating Engineering Student Learning Style Trends by Using Multivariate Statistical Analysis. Education Sciences. 2019; 9 (1):58.

Chicago/Turabian Style

Abdelhakim Abdelhadi; Yasser Ibrahim; Mohammad Nurunnabi. 2019. "Investigating Engineering Student Learning Style Trends by Using Multivariate Statistical Analysis." Education Sciences 9, no. 1: 58.

Short communication
Published: 19 August 2018 in Case Studies in Construction Materials
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In this research, analytical fragility curves for typical mid-rise plane reinforced concrete moment-resisting frames in Kingdom of Saudi Arabia, KSA, which is considered low-seismicity area, are presented. The fragility curves are developed for 12-story reinforced concrete structure designed according to Saudi Building Code under dead, live and seismic loads. Three cities with different seismic intensities; Abha, Jazan and Al-Sharaf were selected to cover various values of mapped spectral accelerations in KSA. The 0.2-second spectral accelerations range from 0.21 g to 0.66 g while the 1.0-second spectral accelerations range from 0.061 g to 0.23 g. Incremental Dynamic Analysis, IDA, was performed under twelve ground motions using SeismoStruct. Five performance levels; Operational, Immediate Occupancy, Damage Control, Life Safety and Collapse Prevention, which define different possible damage states of a building after an earthquake, were considered and monitored in the analysis. Based on the results of the IDA and statistical analysis, the probability of reaching or exceeding a specific damage state was calculated for each structural model in the three cities. The results were fitted and the fragility curves were developed and presented.

ACS Style

Yasser E. Ibrahim. Seismic risk analysis of multistory reinforced concrete structures in Saudi Arabia. Case Studies in Construction Materials 2018, 9, 1 .

AMA Style

Yasser E. Ibrahim. Seismic risk analysis of multistory reinforced concrete structures in Saudi Arabia. Case Studies in Construction Materials. 2018; 9 ():1.

Chicago/Turabian Style

Yasser E. Ibrahim. 2018. "Seismic risk analysis of multistory reinforced concrete structures in Saudi Arabia." Case Studies in Construction Materials 9, no. : 1.

Technical papers
Published: 20 September 2011 in The IES Journal Part A: Civil & Structural Engineering
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This article is concerned with the development of seismic fragility curves for typical mid-rise plane reinforced concrete moment-resisting frames in Kingdom of Saudi Arabia (KSA), which is considered as low-seismicity area. Two structural models; four- and eight-storey moment-resisting frames were considered. Three cities with different seismic intensities, Abha, Jazan and Al-Sharaf, were selected to cover various values of mapped spectral accelerations in KSA. The 0.2-s spectral accelerations range from 0.21 to 0.66 g, while the 1.0-s spectral accelerations range from 0.061 to 0.23 g. The structural models were designed under dead, live and seismic loads of these cities according to the Saudi Building Code. Incremental dynamic analysis was performed under 12 ground motions using SeismoStruct. Five performance levels, namely, operational, immediate occupancy, damage control, life safety and collapse prevention were considered and monitored in the analysis. Fragility curves were developed for the structural models of the three cities considering the five selected performance levels.

ACS Style

Yasser E. Ibrahim; Mostafa M. El-Shami. Seismic fragility curves for mid-rise reinforced concrete frames in Kingdom of Saudi Arabia. The IES Journal Part A: Civil & Structural Engineering 2011, 4, 213 -223.

AMA Style

Yasser E. Ibrahim, Mostafa M. El-Shami. Seismic fragility curves for mid-rise reinforced concrete frames in Kingdom of Saudi Arabia. The IES Journal Part A: Civil & Structural Engineering. 2011; 4 (4):213-223.

Chicago/Turabian Style

Yasser E. Ibrahim; Mostafa M. El-Shami. 2011. "Seismic fragility curves for mid-rise reinforced concrete frames in Kingdom of Saudi Arabia." The IES Journal Part A: Civil & Structural Engineering 4, no. 4: 213-223.

Journal article
Published: 31 December 2010 in Alexandria Engineering Journal
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Architectural designers frequently use glass plates that have shapes other than rectangular in both residential and commercial buildings. Commonly, one sees glass plates with trapezoidal, triangular, hexagonal, and circular shapes. For example; window glass in aircraft control tower cabs leans outward to enable ground controllers to have a good view of operations. Consequently, aircraft control tower cabs have glass plates that have trapezoidal shapes. This paper deals with the structural behavior of glass plates other than rectangular shapes. A higher order finite element model based upon Mindlin plate theory was employed to analyze different shapes of glass plates. First, a comparison between experimental and finite element results for a tested trapezoidal glass plate is presented, which shows a very good agreement. Then, the finite element model was used to compare load-induced stresses with those for bounding rectangular shapes. Results of analysis are presented and discussed.

ACS Style

Mostafa M. El-Shami; Yasser E. Ibrahim; Mohsen Shuaib. Structural behavior of architectural glass plates. Alexandria Engineering Journal 2010, 49, 339 -348.

AMA Style

Mostafa M. El-Shami, Yasser E. Ibrahim, Mohsen Shuaib. Structural behavior of architectural glass plates. Alexandria Engineering Journal. 2010; 49 (4):339-348.

Chicago/Turabian Style

Mostafa M. El-Shami; Yasser E. Ibrahim; Mohsen Shuaib. 2010. "Structural behavior of architectural glass plates." Alexandria Engineering Journal 49, no. 4: 339-348.