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RISS 인기검색어
- 검색키워드
- 저자 : Erdem Türkeli (검색결과 3 건)
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Optimum design of partially prestressed concrete beams using Genetic Algorithms
Erdem Türkeli,Hasan Tahsin Öztürk 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.64 No.5
This paper deals with the optimum cost design of partially prestressed concrete I crosssectioned beams by using Genetic Algorithms. For this purpose, the optimum cost design of two selected example problems that have different characteristics in behavior are performed via Genetic Algorithms by determining their objective functions, design variables and constraints. The results obtained from the technical literature are compared with the ones obtained from this study. The interpretation of the results show that the design of partially prestressed concrete I crossectioned beams from cost point of view by using Genetic Algorithms is 35~50 % more economical than the traditional ones (technical literature) without conceding safety.
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The slenderness effect on wind response of industrial reinforced concrete chimneys
Zeki Karaca,Erdem Türkeli 한국풍공학회 2014 한국풍공학회지 Vol.18 No.3
There are several parameters affecting the response of industrial reinforced concrete (RC)chimneys, i.e., the severity of wind and earthquake loads acting to the structure, structural properties such asheight and cross section of the chimney, the slenderness property of the structure etc. One of the mostimportant parameter that should be considered while understanding the wind response of industrial RCchimneys is slenderness property. Although there is no certain definition for slenderness effect on thesestructures, some standards like ASCE-7 define slenderness from different aspects of the structural properties. In the first part of this study, general information about the definition of slenderness in the well-knownstandards and ten selected industrial RC chimneys are given. In the second part of the study, briefinformation about wind load standards that are used for calculating wind loads namely ACI 307/98, CICIND2001, DIN 1056, TS 498 and Eurocode 1 is given. In the third part of the study, calculated wind loads forselected chimneys are represented. In the fourth part of this study, the internal forces obtained from loadcombinations that are applied to chimneys and some graphs presenting the effect of slenderness on chimneysare given. In the last part of the study, a conclusion and discussion part is taking place.
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Seismic assessment of historical masonry structures: The case of Amasya Taşhan
Zeki Karaca,Erdem Türkeli,Şenol Pergel 사단법인 한국계산역학회 2017 Computers and Concrete, An International Journal Vol.20 No.4
Turkey owns a very important cultural and historical heritage that bears the traces of thousands of years of culture and civilization. It is an inevitable duty to carry these treasuries to the future generations. In this paper, structural safety assessment and strengthening stages of one of these important historical heritages namely Amasya Taşhan was investigated in details as a case study. For this purpose, the detailed architectural projects of the structure with the information of all load carrying and structural elements were prepared. Then, the structural dynamic analyses were performed by using SAP2000. The internal forces obtained from the dynamic analyses determined the weak regions. By obtaining the information from dynamic analyses, the method of state of the art technique of application of the structure that needs structural strengthening was selected. The last step is the application of these precautions to the whole structure. At the end of this study, this study not also contains several strengthening techniques that is used in one masonry structure together but also provides a useful reference to the practicing engineers.
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