Sadegh Garivani

• PhD in Structural Engineering
• Professor (Assistant) at University of Bojnord

Torsional irregularity is one of the most probable types of horizontal irregularity and existence of this irregularity in most of the structural loading codes is determined by calculating the ratio of the maximum to the average story drift. No specific method has been previously recommended by the codes to calculate the mentioned ratio in the respo...

Slit dampers are a specific type of metallic yielding dampers, for which many studies have been conducted in recent years, to investigate their behavior and possible applications in structures. In this paper, by considering the behavior of this type of dampers, the use of slit link beam in eccentrically braced frames is proposed. A slit link beam i...

This paper presents a comprehensive state-of-the-art review of the research carried out on the energy-based structural seismic design methods. Since earthquake exerts energy to the structure, it is realistic to use the energy as the main design criteria of the structure. The energy-based seismic design method is based on the concept of energy balan...

On January 19, 2017, the 16‐story Plasco tower located in Tehran, the capital city of Iran, collapsed in several stages, due to a fire lasting 3.5 h. This paper presents the results of numerical investigations on how the structure behaved during that incident. In this regard, initially, a part of floor system including main truss girders, secondary...

Offshore jacket platforms are widely used for wind energy generation and gas and oil field development. The South Pars gas field, located in the Persian Gulf, stands as one of the largest gas fields in the world. This gas field is situated in a seismically active region predominantly characterized by clay soil. Considering the significant impact of...

Fire can damage structures severely and even cause the building collapse. Structural and fire engineers must carry out a comprehensive forensic investigation of major structural failures in the same rigorous and meticulous manner the airline industry investigates air crashes. The forensic assessment should identify the cause, fire spread scenario,...

Distribution of hysteretic energy along the stories of the building structures is a challenging topic in the energy-based design methods as the key design parameter. This paper aims to determine the vertical distribution of seismic hysteretic energy in the buildings equipped with hysteretic dampers required for the development of reliable energy-ba...

In conventional eccentrically braced frames (EBFs), earthquake input energy is mainly dissipated by plastic deformation of link beams. However, the plastic deformation of link beams can cause extensive structural damage during severe seismic events. The self-centering eccentrically braced frames (SEBFs) are one of the strategies that have been prop...

Truss moment frame (TMF) is one of the common lateral load resisting systems for structures with long spans. To avoid developing plastic hinges in the columns, which reduces the ductility of TMFs significantly, special truss moment frames (STMFs) have been offered as a more suitable alternative. In this system, the mid-span of the truss girder is r...

Application of passive structural control using metallic yielding dampers (MYDs) in the design of buildings is considered more often in recent years. Design of a building structure equipped with dampers is more complicated compared to an ordinary structure; but recent design codes provide guidelines in this regard, which normally involve a trial an...

Slit dampers are a specific type of metallic yielding dampers, which are created by cutting a series of slits/openings in metal plates subjected to in-plane shear deformation. These slits/openings divide the metal plates into a number of links that dissipate the input energy through their plastic in-plane deformations. In this paper, a new brace-ty...

The parameters of Ductile Damage model for A36 steel plates were already calibrated and validated by Askariani et al. This report provides more details about validation of these parameters to predict crack initiation and evolution in numerical models in Abaqus software.

On January 19, 2017 an accidental fire, which started by an electric shorting, resulted in the complete collapse of the 16-storey Plasco Building in Tehran. Twenty-two people including sixteen firefighters were killed in that incident. This paper reports the study carried out to investigate the most likely causes of the events and collapse of the s...

Comb-teeth damper (CTD), is a new type of metallic yielding damper, which is made of steel plates and includes a number of teeth that dissipate energy through in-plane flexural yielding. The behavior of individual samples of CTD have been previously studied numerically and experimentally and it has been shown that this damper has excellent energy d...

In this paper, a new type of metallic yielding damper called comb-teeth damper, CTD, is introduced. CTD is made of steel plates and includes a number of teeth that dissipate energy through in-plane flexural yielding. An optimum geometry of teeth is suggested, which assures uniform distribution of stress along them and prevents strain localization....