Eurocode ve ASCE 7-10 / ACI 318-11 / IBC 2012 yönetmeliklerine göre çok katlı betonarme binaların karşılaştırmalı tasarımı

In today's world the development of high tech technology, especially in concrete sciences, let engineers to create higher and higher buildings with the variety of architectonic shapes and forms. It is observed especially in tall buildings in the last 20 years. Modern projects surprised us by complicated forms alluding to history, tradition etc. The innovations in skyscraper design not only promote new ideas in construction solutions but as well in reduction of energy consumption, improving comport of people who live in. Modern equipment of high buildings makes that they can be considered as an intelligent buildings. Designing of high rise buildings with complex form is possible thanks to the development in the computer technology. Increased computational power of computers allowed to create more advanced engineering programs with better simulations and technics in preparing the structural models. However, the use of new computing solutions from other fields such as mechanics is still limited. It concerns dynamic solutions – the behavior of buildings during earthquakes and hurricanes. This limitation is due to not enough numbers of studies and researches. The main idea of this thesis was to prepare a computational model of existing or tall building under construction in one of the structural analysis program. According to dimensions and details taken from building project the main structural model was created in ETABS and Autodesk Robot Structural Analysis Software. It is important to mention that created model was simplification of real building. Curves, arcs in slabs were replaced by perpendicular and diagonal edges. These simplifications don't influence in generally on results obtained, because they concern only geometry. Model was defined as a core wall structure mixed with reinforced concrete frame building in order to maximize the floor – space by consolidating structural support. Concrete core was used as a base or fundament for carrying a beams connected with outside placed columns.According to regulations used in America (ASCE 7-10, ACI 318-11, IBC 2012) and Europe (Eurocode 1, 2, 8) main working loads, namely dead, load, wind and seismic were defined. Dead load in both cases were assumed to have the same value. Materials and their configuration in structural elements like floor, don't depend on the chosen building regulation. However, live load have been changed according to separate category and prescribed conditions in buildings codes.Detailed calculations of wind load were necessary for the design and construction of more wind resistant building. The speed of the wind acts as a pressure when it meets with a building. The intensity of that pressure helps to describe how wind load acts on the structure. Unfortunately there is no precise code which would deal with its pressure distribution in general. In American Codes wind load does not change over a height, just some coefficients are reduced in direction perpendicular to the direction of wind. Although in Eurocode model is a bit more complex. Windward side is divided into rectangular areas where pressure is defined over reference height of each of the segment. If we just look at the total volume of wind forces and building or simplified segments dimenssions of wind pressure coefficient, we can easily compare approximate results of wind actions. Moreover, it should be mentioned that the unpredictability character of loading makes difficulties to obtain accurate calculations.To design a structure against earthquake, method called response spectrum analysis, where maximum responses for a system are estimated, was chosen.The method involves the calculation of only the maximum values of the displacements and member forces in each mode of vibration using smooth design spectra that are the average of several earthquake motions. Because of long computation process all of seismic calculation were done with the help of ETABS. Seismic parameters according to localization, type of the ground and their classification varies from code to code which slightly influence the results. However, the diagram of shear base force after all gave some ideas about range of seismic actions. Based on the results obtained in computational part in ETABS, according to Eurocode and ASCE, structural elements like beam, column and wall were checked and reinforcement was design. The usage of steel reinforcement, placement details were compared and some discrepancies between two ways of analysis were explained as a conclusion. The results of the project were some simple construction drawings included after computational part.