Pouya Akbari; Vahid Saberi; Hamid Saberi; Faezeh Eslami; Abbasali Sadeghi
Volume 2, Issue 9 , December 2021, , Pages 11-21
Abstract
One of the most important and fundamental issues that civil engineers always deal with today due to its importance is the study of the performance and behavior of structures under different conditions. In addition, in many cases, buildings are analyzed and designed separately and without considering ...
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One of the most important and fundamental issues that civil engineers always deal with today due to its importance is the study of the performance and behavior of structures under different conditions. In addition, in many cases, buildings are analyzed and designed separately and without considering the effect of other elements, including the foundation and soil of the infrastructure, which in many cases creates irreparable risks; Therefore, it is necessary to study and evaluate the effect of soil-structure interaction on the performance and design of buildings in order to manage the cost and time of construction projects. In this study, the performance of steel structures with concentric brace of 5, 10 and 15 floors by considering the interaction of soil structure in three different soil modes using nonlinear dynamic analysis of time history under 3 near-fault earthquakes has been done. The results show that considering the interaction of soil and structure increases the accuracy of structural responses.
Vahid Saberi; Hamid Saberi; Pouya Akbari; Faezeh Eslami; Abbasali Sadeghi
Volume 2, Issue 8 , November 2020, , Pages 55-71
Abstract
In construction of high-rise buildings, one of the major and effective factors is the final cost of structure. Due to high volume of materials in such sort of projects, the smallest changes in the type and method of joining between the different structural components of these systems may have substantial ...
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In construction of high-rise buildings, one of the major and effective factors is the final cost of structure. Due to high volume of materials in such sort of projects, the smallest changes in the type and method of joining between the different structural components of these systems may have substantial impact on the amount of consumed materials and hence the final cost of the project. Structural systems applied in construction of high-rise buildings must be able to transfer the lateral wind force into the earth. One the systems used in construction of high buildings is outrigger system and truss belt. Optimized location of truss belt and shape of architectural plan have crucial effect on structural performance of the system. The aim of this study is to find the appropriate shape for building plan. In this regard, rectangular shaped plans with different width-to-length ratios, similar areas and different number of caps along the height of the building were constructed. After modeling and sample analysis, different parameters such as shear moment, lateral displacement, base shear, relative lateral displacement and …, were compared. Comparison of curves and analysis of obtained results showed that application of rectangular plan with width-to-length ration of 0.64 has better structural performance efficiency. Also, when lateral wind force is applied, application of truss belt resulted in creation of an inflection point in axial force curve of the columns surrounding the central core in the interval between two belts.
