# Comparative Analysis of Target Displacements in RC Buildings for 2023 Turkiye Earthquakes
## 5 Results and Conclusions
In addition, considering the large earthquakes that have occurred, it reveals the necessity of re-performing seismic hazard analyses, especially for the provinces in the earthquake zone. The anticipated PGA, spectral acceleration coefficients, and the idealized curve for target displacements in TBEC-2018 should be revised based on the recent Kahramanmaras earthquakes. Accurate representation of the PGA value allows the design spectra used in structural analyses to be more realistic and to obtain accurate damage estimates that may occur in earthquakes. The accelerations of the Kahramanmaras earthquakes were high enough to cause large-scale destruction and shaking. This indicates that construction standards, ground analyses, and general earthquake preparations in the region need to be further improved. In this paper, the damages commonly observed in the earthquake region were specifically examined for RC structures. Incomplete or non-existent use of earthquake-resistant building design principles in the planning and construction phase is one of the important causes of damage. It can be stated that the building inspection mechanisms implemented in Turkley, especially in the last decade, have significantly reduced damage levels. In addition, poor workmanship and low material strength have also contributed to the damage rate. Factors such as soft or weak stories, inadequate lateral stiffness, short columns, strong beams-weak columns, plan irregularities, and errors in reinforcement detailing pertaining to the processing of reinforcement (insufficient stirrups, inadequate or missing rebar layouts, inadequate or incorrect interlocking), have negatively affected the performances of the buildings, thereby influencing the level of structural damage. At this point, applying the principles outlined in the regulation with adequate supervision during both the construction and project phases could be seen as the primary step in minimizing the troubles. Besides, irregularities like soft or weak stories and short columns that might negatively affect the behavior of buildings under the influence of earthquake loads, must be avoided as much as possible, or else, required protection must be taken. It has been observed that a large portion of structures subject to partial or total collapse in earthquakes are made up of RC frames only. In structures where RC shear walls are used, damages have been quite limited, or life safety has been ensured. In this context, the use of RC shear walls, which are not mandatory in the ground and upper floors of RC structures in the earthquake regulations currently used in Turkley, should be made mandatory. Thus, it is used to increase the rigidity of the structure in earthquake zones and to enable it to carry horizontal loads (such as earthquake effects) more efficiently. In addition, RC structures constructed in adjacent arrangements should be avoided as much as possible, and if necessary, collision effects should be minimized by using expansion joints. In order to increase the building area, the use of heavy overhangs on upper floors should be restricted. In RC structures, the heights and purpose of use within the structure should not be changed. The building control mechanism used in Turkley in recent years should continue to be applied more sensitively both in the project and construction phases. This process, which is applied to urban building stock, should also be used in rural areas. In addition to all these, with the help of structural health monitoring applications to be created for the structures, the traceability of the structures can be ensured, allowing the necessary interventions to be made before a possible earthquake. Conceptualization, E.I., A.B. and E.A. ; methodology, E.I., F.A. and E.A. ; validation, A.B. and E.I. ; investigation, E.I., F.A. and A.B. ; resources, F.A. and A.B. ; data curation, A.B. and E.A. ; writing--original draft preparation, E.I., A.B. and F.A. ; writing--review and editing, E.A. ; visualization, E.A. ; supervision, E.I. and F.A. ; funding acquisition, E.I., F.A., A.B.