The existing buildings can be improved under the seismic effect by adding rubber to the bolts in the connection. The buildings when maintenance work is happening there is a problem many times and it should be evacuated and requires high cost. This study aims to maintain the building without having to remove it and at a very low cost compared to other methods. This study includes six models divided into two groups. The two groups differ in terms of the number of bolts in the contact area between the column and the beam in the steel frame. The first group models contain four bolts in the connection area and the second group forms contain five bolts in the contact area. Each group includes three models representing the first form of a reference model that has not rubber material around the bolts in the connection area, the second model contains 150% rubber than a bolt diameter around one bolt of the connection area, and all the bolts in the connection area in the third model are warped with rubber. The presence of rubber around one bolt gave a load, displacement, drifting, damping ratio, ductility index energy dissipation close to models where all contact bolts are warped with rubber material
The accumulation of rubber tires poses a great danger to the environment, especially since the number of cars is constantly increasing. Therefore, at the beginning work was done to recycle these tires and use them as an alternative to the natural aggregate used in concrete. It was also used in asphalt used in roads. Packaging for the Shear Connecter used in composite section. As this work gave excellent results in reducing the hardness of the shaker contactor, increasing its durability and resistance, and also preserving it from corrosion by rust. Waste rubber was also used to covering the bolts used to connect the beam with the column in steel structures. Where the presence of rubber gave a high ability to dissipate energy when the steel structure is subjected to a seismic load. It also worked to increase the displacement and increase the durability of the steel structure and also reduce the friction between the bolts and their holes. The presence of rubber around the bolt also delayed the failure time of the steel structure and thus the important aim of the research work has been achieved, which is to maintain the safety of people when the structure is exposed to an earthquake load.
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