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本文分析讨论了工程中钢筋混凝土结构的材料特性,提出了一种考虑非均匀配筋的钢筋混凝土材料本构关系——非均匀弹性本构方程。在此基础上,本文又进一步研究了混凝土出现裂纹后的钢筋混凝土材料本构关系式,提出了一种计算混凝土具有局部裂纹群的钢筋混凝土材料本构方程式。 根据文中所提的本构方程,本文采用轴对称有限单元对双曲冷却塔的动力特性、阵风响应分别作了计算,其数值结果同分别按等效各向同性、正交各向异性所计算得到的结果进行了对比,比较结果表明,这三种模型除了频率比较相近之外,振型和风振系数都有较大的差异。
This paper analyzes and discusses the material properties of reinforced concrete structures in engineering, and proposes a constitutive relation of reinforced concrete materials considering non-uniform reinforcements—non-uniform elastic constitutive equations. On this basis, this paper further studied the constitutive equations of reinforced concrete after cracking of concrete, and proposed a constitutive equation for the calculation of concrete with local cracks. According to the constitutive equations proposed in this paper, the dynamic characteristics and gust response of the hyperbolic cooling tower are calculated using axisymmetric finite element. The numerical results are calculated with the equivalent isotropic and orthotropic The results obtained are compared and the results show that the three models have large differences in vibration mode and wind vibration coefficient, in addition to similar frequencies.