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在钢桥建造中,曲板的应用越来越广泛。但由于缺乏相应标准,特别是在欧洲规范中,所以在设计过程中会遇到一些困难。基于欧洲规范3中的各种稳定方程,给出均匀轴压下非加劲圆柱曲板极限承载力的计算方法。首先进行一系列数值模拟,以确定曲板的基本弹塑性性能。基于数值结果,提出计算弹性屈曲承载力和极限承载力的半经验公式,并举例说明。
In the steel bridge construction, curved plate is more and more widely used. However, due to the lack of corresponding standards, especially in the European norms, some difficulties are encountered in the design process. Based on the various stability equations in Eurocode 3, a method for calculating the ultimate bearing capacity of a non-stiffened cylindrical curved plate under uniform axial compression is given. First, a series of numerical simulations were performed to determine the basic elasto-plastic properties of the curved panels. Based on numerical results, a semi-empirical formula to calculate the elastic buckling capacity and the ultimate bearing capacity is proposed and illustrated.