• Title/Summary/Keyword: Turkstra's rule

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Determination of the Collapse Load of Elastic-Perfectly Plastic Frame Under the Probabilistic Load Incremental Method (확률특성을 고려한 탄성-완전소성 뼈대 구조물의 붕괴하중 산정)

  • 윤성수;장주흠;김한중;이정재
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.40 no.2
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    • pp.140-147
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    • 1998
  • Since a structure carries out its given functions and purposes while it is always resisting against the external load, the capacity of the resistance in the structure within the range that will not collapse the structure itself becomes the important factor in the design of the structures. Therefore, many suggestions were proposed and noted for determining method of the collapse load. Some of the methods from the suggestions have been commonly used due to the considerations on their distinctive advantages such as the compactness of the conceptions and the convenience in the computation. However, in case when the variation becomes huge in the materials and load, the results would carry(have or contain) many uncertain elements. On the other hand, load incremental method which regards the characteristics of the probability must be more attainable method even though it might complicate the calculation. This study intends to develop a finite element model that uses the probabilistic load incremental method to estimate the collapse load, and also to compare the result of the analysis with the linear load incremental method and Turkstra's Rule.

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Combination coefficient of ESWLs of a high-rise building with an elliptical cross-section

  • Wang, Qinhua;Yu, Shuzhi;Ku, Chiujen;Garg, Ankit
    • Wind and Structures
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    • v.31 no.6
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    • pp.523-532
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    • 2020
  • As the height and flexibility of high-rise buildings increase, the wind loads become more dominant and the combination coefficient of Equivalent Static Wind Loads (ESWLs) should be considered when they are used in the structural design. In the first phase of the study, a brief introduction to the theory on the combination coefficient for high-rise buildings was given and then the time history of wind-induced responses of a 208-meter high-rise building with an elliptical cross-section was presented based on the wind tunnel test results for pressure measurement. The correlation between wind-induced responses was analyzed and the combination coefficients of ESWLs of the high-rise buildings using Turkstra's rule, and Asami's method, were calculated and compared with related design codes, e.g., AIJ-RLB, ASCE 7-10, and China Load Code for structural design. The results of the study showed that the combination coefficients from Asami's method are conservative compared with the other three methods. The results of this paper would be helpful to the wind-resistant design of high-rise buildings with elliptical cross-section.