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Mr. Amirhosein Shabani
Oslo Metropolitan University

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0 Earthquake Engineering
0 Heritage Buildings
0 Nonlinear Analysis
0 Steel Structures
0 Structural Engineering

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Journal article
Published: 20 July 2021 in Sustainability
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Because of its high strength, energy reduction, and low environmental impact, researchers have encouraged considering alkali-activated slag concrete (AASC) as a potential alternative to conventional concrete. In this study, the impact of mix design parameters on the durability of AASC, made with ground granulated blast furnace slag and activated with different alkaline solutions (NaOH, KOH, and Na2SiO3) immersed up to six months in a hydrochloric acid bath with pH = 3, has been investigated. A total of 13 mix designs were made in a way that, in addition to the type of alkaline solution, considered three other parameters, namely the molarity of alkaline solutions, the weight ratio of alkaline solutions to slag, and the weight ratio of alkaline solutions to sodium silicate. Visual inspections displayed that the AASC samples almost remained intact after exposure to an HCl acid solution with pH = 3 for up to 6 months, while the OPC sample experienced deleterious deterioration. The results clearly show that AASC outperformed OPC concrete when it comes to durability in an HCl acid solution. The strength reduction and weight loss of AASC compared with OPC concrete were approximately one-tenth and one-fifth, respectively. The AASC samples containing potassium hydroxide showed a higher strength reduction and weight loss in the HCl acid solution than the samples made with sodium hydroxide.

ACS Style

Mohammad Teymouri; Kiachehr Behfarnia; Amirhosein Shabani. Mix Design Effects on the Durability of Alkali-Activated Slag Concrete in a Hydrochloric Acid Environment. Sustainability 2021, 13, 8096 .

AMA Style

Mohammad Teymouri, Kiachehr Behfarnia, Amirhosein Shabani. Mix Design Effects on the Durability of Alkali-Activated Slag Concrete in a Hydrochloric Acid Environment. Sustainability. 2021; 13 (14):8096.

Chicago/Turabian Style

Mohammad Teymouri; Kiachehr Behfarnia; Amirhosein Shabani. 2021. "Mix Design Effects on the Durability of Alkali-Activated Slag Concrete in a Hydrochloric Acid Environment." Sustainability 13, no. 14: 8096.

Review article
Published: 16 April 2021 in Engineering Structures
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Cities in the developing world are facing outstanding economic and human losses caused by natural hazards such as earthquakes, and the amount of losses is affected by the quality of preventive measures and emergency management. For this reason, seismic vulnerability assessment is considered a crucial part of a strategy for seismic risk mitigation and for improving the resiliency of cities. Due to the high number of building archetypes for the seismic vulnerability assessment at a large scale, fast, simplified methods have been proposed that can facilitate the assessment procedure with low computational effort. Simplified methods can be categorized into three groups: analytical, empirical, and hybrid methods. In this study, simplified analytical methods for the seismic vulnerability assessment of unreinforced masonry (URM) buildings were reviewed, starting with their classification into three main groups: collapse mechanism-based, capacity spectrum-based, and fully displacement-based methods. Finally, attention was given to the corresponding software packages that were developed to facilitate the assessment procedure.

ACS Style

Amirhosein Shabani; Mahdi Kioumarsi; Maria Zucconi. State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings. Engineering Structures 2021, 239, 112280 .

AMA Style

Amirhosein Shabani, Mahdi Kioumarsi, Maria Zucconi. State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings. Engineering Structures. 2021; 239 ():112280.

Chicago/Turabian Style

Amirhosein Shabani; Mahdi Kioumarsi; Maria Zucconi. 2021. "State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings." Engineering Structures 239, no. : 112280.

Review
Published: 13 August 2020 in Forests
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The conservation of heritage structures is pivotal not only due to their cultural or historical importance for nations, but also for understanding their construction techniques as a lesson that can be applied to contemporary structures. Timber is considered to be the oldest organic construction material and is more vulnerable to environmental threats than nonorganic materials such as masonry bricks. In order to assess the structural vulnerability of heritage timber structures subjected to different types of risk, knowledge about their structural systems and configurations, the nature and properties of the materials, and the behavior of the structure when subjected to different risks, is essential for analysts. In order to facilitate the procedure, different assessment methods have been divided into the categories in situ and ex situ, which are applicable for vulnerability assessments at the element and full-scale level of a case study. An existing methodology for structural vulnerability assessments and conservation of heritage timber buildings is reviewed and a new methodology is proposed.

ACS Style

Amirhosein Shabani; Mahdi Kioumarsi; Vagelis Plevris; Haris Stamatopoulos. Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal. Forests 2020, 11, 881 .

AMA Style

Amirhosein Shabani, Mahdi Kioumarsi, Vagelis Plevris, Haris Stamatopoulos. Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal. Forests. 2020; 11 (8):881.

Chicago/Turabian Style

Amirhosein Shabani; Mahdi Kioumarsi; Vagelis Plevris; Haris Stamatopoulos. 2020. "Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal." Forests 11, no. 8: 881.

Research article
Published: 30 June 2020 in Shock and Vibration
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In many multistory buildings, basement levels are used as parking spaces. However, dimensions of reinforced concrete columns at these levels cause them to be unideal parking spaces. An alternative is to replace the RC columns in middle frames with steel columns that are not a part of seismic force resisting system and only support vertical loads, therefore have smaller sections. Using simply supported steel columns under the base level is beneficial not only because they have smaller cross-sections which lead to increasing the parking space but also these steel columns are easier to be replaced after any possible damages and can be considered as convenient alternatives compared to ordinary RC columns in construction. In this research, seismic performance of structures implementing the suggested alternative is evaluated using nonlinear static and dynamic analyses and compared to that of regular counterparts. Results show that these structures pass the acceptability tests proposed by FEMA P695 methodology. Moreover, seismic performance factors of these two structural systems have been calculated and proposed.

ACS Style

Amin Zaherdannak; Amirhosein Shabani; Saeed Erfani. Seismic Performance Evaluation of Special RC Frames with Gravity Steel Columns under the Base Level. Shock and Vibration 2020, 2020, 1 -11.

AMA Style

Amin Zaherdannak, Amirhosein Shabani, Saeed Erfani. Seismic Performance Evaluation of Special RC Frames with Gravity Steel Columns under the Base Level. Shock and Vibration. 2020; 2020 ():1-11.

Chicago/Turabian Style

Amin Zaherdannak; Amirhosein Shabani; Saeed Erfani. 2020. "Seismic Performance Evaluation of Special RC Frames with Gravity Steel Columns under the Base Level." Shock and Vibration 2020, no. : 1-11.

Journal article
Published: 10 February 2020 in Applied Sciences
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As a lateral load-bearing system, the steel plate shear wall (SPSW) is utilized in different structural systems that are susceptible to seismic risk and because of functional reasons SPSWs may need openings. In this research, the effects of rectangular openings on the lateral load-bearing behavior of the steel shear walls by the finite element method (FEM) is investigated. The results of the FEM are used for the prediction of SPSW behavior using the artificial neural network (ANN). The radial basis function (RBF) network is used to model the effects of the rectangular opening in the SPSW with different plate thicknesses. The results showed that the opening leads to reduced load-bearing capacity, stiffness and absorbed energy, which can be precisely predicted by employing RBF network model. Besides, the suitable relative area of the opening is determined.

ACS Style

Mohammad Javad Moradi; Mohammad Mahdi Roshani; Amirhosein Shabani; Mahdi Kioumarsi. Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network. Applied Sciences 2020, 10, 1185 .

AMA Style

Mohammad Javad Moradi, Mohammad Mahdi Roshani, Amirhosein Shabani, Mahdi Kioumarsi. Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network. Applied Sciences. 2020; 10 (3):1185.

Chicago/Turabian Style

Mohammad Javad Moradi; Mohammad Mahdi Roshani; Amirhosein Shabani; Mahdi Kioumarsi. 2020. "Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network." Applied Sciences 10, no. 3: 1185.

Article
Published: 24 August 2019 in International Journal of Steel Structures
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Simple beam–column connections are simpler and cheaper in construction than rigid beam–column connections, moreover, beams under the base level are only carrying gravity loads because of high rigidity of basement walls; therefore, seismic performance of special steel moment frame with basement wall is investigated in two cases in this paper. First, as the normal case of design, rigid beam–column connections are used under the base level, then all of the beam–column connections under the base level are changed to simple connections. The seismic performance of these two types is evaluated by FEMA P695 method. For predicting the collapse capacity of each archetype, adjusted collapse margin ratios are evaluated based on several nonlinear analyses and compared to acceptance criteria. Finally, seismic performance of these two kinds of structures is compared with each other. Despite the structural system’s change in height, seismic performance factors of special steel moment frames are considered for designing whole of the structures. Finally all two types of structures pass the acceptability checks and all the initial assumption are proved.

ACS Style

Amirhosein Shabani; Saeed Erfani. Seismic Performance Evaluation of SSMF with Simple Beam–Column Connections Under the Base Level. International Journal of Steel Structures 2019, 20, 89 -100.

AMA Style

Amirhosein Shabani, Saeed Erfani. Seismic Performance Evaluation of SSMF with Simple Beam–Column Connections Under the Base Level. International Journal of Steel Structures. 2019; 20 (1):89-100.

Chicago/Turabian Style

Amirhosein Shabani; Saeed Erfani. 2019. "Seismic Performance Evaluation of SSMF with Simple Beam–Column Connections Under the Base Level." International Journal of Steel Structures 20, no. 1: 89-100.