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首页> 外文会议>Second International Conference on Coupled Instabilities in Metal Structures CIMS'96 5-7 September 1996 Liege-Belgium >Load-carrying capactiy of cable-stayed girders based on multiple ultimate strength curves and its stability check
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Load-carrying capactiy of cable-stayed girders based on multiple ultimate strength curves and its stability check

机译：基于多重极限强度曲线的斜拉梁承载力及其稳定性检验

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摘要

By using the modified E_f method which is proposed as a simplified method for evaluating the load-carrying capacity of frame structures, the aim of this paper is to clarify the characteristics of the effective length, allowable stress and E_f value of cable-stayed girders according to the different ultimate strength curves of the columns. Furthermore, we propose a new formula for ensuring safety against instability of the girders, and explain its validity. It is shown that different factors of safety are obtained depending on the ultimate strength curves, of the flexural rigidity of the girder is low. On the other hand, almost the same factor of safety is obtained when the flexural rigidity is high. It is also shown that the proposed method gives a good estimation of the load-carrying capacity of cable-stayed bridges.
机译：通过使用改进的E_f方法作为评估框架结构承载力的简化方法，本文旨在阐明斜拉梁的有效长度，许用应力和E_f值的特性。柱的不同极限强度曲线。此外，我们提出了一个新的公式来确保安全性，防止梁的不稳定性，并解释其有效性。结果表明，取决于极限强度曲线，获得了不同的安全系数，梁的抗弯刚度较低。另一方面，当抗弯刚度高时，可获得几乎相同的安全系数。还表明，所提出的方法可以很好地估计斜拉桥的承载能力。

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