چكيده به لاتين
The phenomenon of faulting is one of the destructive consequences of an earthquake, which occurs due to the movement of faults during an earthquake. In fact, after the occurrence of an earthquake, in addition to temporary tremors, there are also permanent changes that appear on the surface of the ground. This event causes a break in the ground's surface, or in other words, a surface fault. This phenomenon seriously threatens the structures that are located near or on the rupture surfaces. Because the large deformations created on the surface of the earth cause asymmetric deformations in the foundation of these structures, and finally these deformations are transferred to the structures and cause their destruction. According to the existing regulations in the world, in order to prevent the destruction of structures, construction in active fault zones is prohibited, but the growing population and the need to expand construction are inevitable. In general, avoiding construction in the range of active faults as a solution is not our goal in this study. Rather, in this research, the aim is to provide methods and measures to reduce the risks and damages caused by faulting on buildings. so that the construction of buildings in these areas can be investigated and studied.
In the upcoming research, using PLAXIS two-dimensional finite element software, two 2-meter-wide strip foundations, along with reinforcement in the soil bed, are subjected to normal faulting at an angle of 60 degrees and vertical displacement of 1 meter. In this study, the effect of various parameters such as the length of the reinforcement, the number of reinforcing layers, the stiffness and ultimate tensile strength of the reinforcement, the vertical distance of the reinforcements, the effect of surcharghe, the location of the fault and the displacement of the fault on the rotation and The settlement of foundations is studied and investigated. The results of this research show that the use of reinforcing elements causes the soil resistance to increase due to the presence of these elements. Therefore, the changes in the soil surface and the rotation of the foundations are dependent on the reinforcing parameters, while the vertical settlement of the foundations depends on their position relative to the fault. Therefore, changing the reinforcement parameters does not have a noticeable change in the asymmetric settlement of the foundations, which shows the importance of the fault position in relation to the foundations. Also, the position of the foundations in relation to the fault is very influential in the interaction between the foundation and the fault, so that the effect of changing the mentioned parameters on the behavior of the foundation placed in the hanging wall is different from that of the foundation placed in the foot wall.
