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给出新的估算钢斜拉桥极限荷载的简便方法。采用新的用于迭代特征值计算的收敛准则来考虑斜拉桥系统中的梁-柱效应。采用新方法分别估算中等跨度和大跨度模型的极限荷载,并与非线性非弹性分析方法进行比较。结果显示,新方法能很方便的替代复杂的非线性非弹性分析而近似评估钢斜拉桥的极限荷载和失效模式。
A new convenient method of estimating the ultimate load of steel cable-stayed bridges is given. A new convergence criterion for iterative eigenvalue calculation is used to consider the beam-column effect in cable-stayed bridge systems. The new method was used to estimate the ultimate load of the mid-span and long-span models, respectively, and compared with the nonlinear inelastic analysis method. The results show that the new method can conveniently approximate the ultimate load and failure modes of steel cable-stayed bridges instead of complex non-linear inelastic analysis.