Do you know what is meant by seismic dampers? During the life of buildings, many different forces are involved in the building, and one of the most important of these forces is the earthquake force, which causes the structure’s foundations to move.
There are various objectives to make a building resistant, such as increasing the integrity of the structure, reducing the cost and increasing the speed of construction, increasing the productivity of the structure, etc. These damages are done by seismic upgrading and the use of seismic dampers.
Familiarity with seismic dampers
As mentioned, one of the main goals of improving structures that will reduce damages and financial losses on buildings and reduce repair or reconstruction costs after an earthquake is to make the building resistant. To achieve these goals, in recent decades, various methods have been used to develop these goals.
One such way to reduce forces on buildings and structures is to use base isolators and dampen the earthquake force in limited parts of the buildings, which are known as dampers. The use of seismic dampers has been widely used in recent decades. Based on this method, researchers have tested and proposed many methods for base insulators and dampers.
Application of dampers
One of the most important applications of seismic dampers includes strengthening various structures and buildings against earthquakes. Many methods have been proposed using seismic dampers in the process of making buildings resistant and isolating structures, but their main use is to reduce the intensity of earthquakes and also to strengthen buildings, which acts as a vibration control system in buildings and structures. .
Use of seismic dampers
The effect of using dampers on seismic improvement
Traditional structures and buildings contain major structural components such as beams and columns, but they do not have much resistance against severe earthquakes and relatively strong earthquakes. These buildings and facilities were greatly damaged by earthquakes, so the cost of restoring and rebuilding them after the earthquake is high, and to repair them you have to incur a lot of costs that cannot be borne at all. Economical.
Therefore, by using energy harvesting systems and directing the forces entering buildings and structures, it is possible to help improve and reduce damage in order to prevent damage to the main components of the structure. A common method of controlling and neutralizing earthquakes in buildings is to consume energy from materials. Seismic dampers have such a large capacity that they can help the structure suppress incoming energy during an earthquake.
Performance of seismic dampers during earthquakes
The use of seismic dampers in buildings and structures causes a large amount of earthquake force when an earthquake occurs, causing inelastic deformation and wasting this force, so the use of movable dampers greatly prevents damage. It prevents other members of the structure.
The strength of dampers and their ability to absorb energy depend on the stress-strain properties of the metal material in the nonlinear region. By using dampers, the materials are subjected to different axial, force and shear forces, and also as a result of using seismic dampers next to the building components, the structure results in increased elastic stiffness of the structure. By increasing the rigidity, the strength of structures in the flexible zone is better controlled and makes the building more resistant.
History of use of dampers
The use of metal dampers was first introduced in the 1970s. In the past few decades, many people have conducted many researches on different ways and forms of using metal dampers.
Types of dampers used to improve earthquakes and strengthen buildings
Dampers are produced in the form of triangular-section dampers, slotted dampers, lead-injection dampers, and alloy dampers, each with different characteristics and benefits for seismic improvement of buildings.
Building resistance against earthquakes
There are many ways to make buildings resistant, one can mention the use of seismic system dampers in structures and buildings, which can be very effective during an earthquake.
Reinforcement with dampers works on the basis of increasing the damping coefficient of buildings. In general, the use of dampers makes structures generally provide critical damping of 5%, but using seismic dampers next to side bearing elements or connections to structures can increase the damping of the structure by more than 50% and make the desired building or structure highly resistant.
The use of dampers reduces the overall movement in the structure and reduces the response acceleration and lateral displacement of the internal floors, thus reducing damage to the structure and building. The main purpose of using dampers is to prevent the direct transmission of earthquake force to the foundation of the structure.
conclusion
Today, strengthening buildings is at the top of the list of all construction projects. Seismic dampers are considered one of the most successful methods that have been used to reduce the severity of earthquakes, as the use of seismic dampers reduces the strength of earthquakes and reduces damage to buildings. To better improve your buildings and structures, you can get help from the experts of Pekran Sazan Earthquake Improvement Site using dampers.