In this paper, a modified and improved seismic isolation system called suspension columns for sei... more In this paper, a modified and improved seismic isolation system called suspension columns for seismic isolation was investigated. An experimental study of the proposed isolation method, together with theoretical and numerical analyses, has thoroughly been conducted. In the proposed method, during the construction of the foundation, some cavities are created at the position of the columns inside the foundation and the columns are placed inside the cavities and hanged from the foundation by flexible cables rather being directly connected to the foundation. Since the columns are suspended and due to the gap between the columns and walls of the cavities, the structure is able to move freely to each side thus, the transmitted seismic actions are reduced. The main parameter of this isolation technique is the length of the suspension cable. As the cable length is changed, the natural frequency of the structure is also changed, thus, the desired frequency can be achieved by means of an appr...
Journal of Rehabilitation in Civil Engineering, 2020
Seismic isolation is a method to reduce the destructive effects of earthquakes on a structure in ... more Seismic isolation is a method to reduce the destructive effects of earthquakes on a structure in which the structure is separated from its foundation by devices called seismic isolators. As a result, the horizontal movements of the earthquake transmitted to the structure are reduced. The seismic isolation is used for both newly constructed structures as well as for retrofitting the existing buildings. Due to the appropriate functioning of the isolators in past earthquakes, many structures are now equipped with these earthquake-resistant systems. So far, some review research works have been conducted on the seismic isolation techniques but in the limited and regional application form. In this paper, a historical evolutionary review of the isolation techniques has been conducted in chronological order. The methods of seismic isolation have been categorized based on their mechanism. The advantages and disadvantages of these methods are discussed. In addition, the latest advances and ne...
In this paper, a modified and improved seismic isolation system called suspension columns for sei... more In this paper, a modified and improved seismic isolation system called suspension columns for seismic isolation was investigated. An experimental study of the proposed isolation method, together with theoretical and numerical analyses, has thoroughly been conducted. In the proposed method, during the construction of the foundation, some cavities are created at the position of the columns inside the foundation and the columns are placed inside the cavities and hanged from the foundation by flexible cables rather being directly connected to the foundation. Since the columns are suspended and due to the gap between the columns and walls of the cavities, the structure is able to move freely to each side thus, the transmitted seismic actions are reduced. The main parameter of this isolation technique is the length of the suspension cable. As the cable length is changed, the natural frequency of the structure is also changed, thus, the desired frequency can be achieved by means of an appr...
Journal of Rehabilitation in Civil Engineering, 2020
Seismic isolation is a method to reduce the destructive effects of earthquakes on a structure in ... more Seismic isolation is a method to reduce the destructive effects of earthquakes on a structure in which the structure is separated from its foundation by devices called seismic isolators. As a result, the horizontal movements of the earthquake transmitted to the structure are reduced. The seismic isolation is used for both newly constructed structures as well as for retrofitting the existing buildings. Due to the appropriate functioning of the isolators in past earthquakes, many structures are now equipped with these earthquake-resistant systems. So far, some review research works have been conducted on the seismic isolation techniques but in the limited and regional application form. In this paper, a historical evolutionary review of the isolation techniques has been conducted in chronological order. The methods of seismic isolation have been categorized based on their mechanism. The advantages and disadvantages of these methods are discussed. In addition, the latest advances and ne...
Uploads