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本文用三维光弹冻结原理和方法分析了三种不同结构形式桥墩顶帽切片各点的全部应力分量(即每点六个正应力,三个主应力和其分别对三个坐标轴的夹角),并与空间有限元法和钢筋混凝土模型试验成果作了对比。比较的结果说明,这三种方法所得到的应力分布规律基本一致,主要部位的应力数值也很接近。由此可见,三维光弹性实验目前仍然是分析空间结构,尤其是复杂空间结构应力的有效手段之一。
In this paper, the three-dimensional photoelastic freezing principle and method are used to analyze the stress components of three kinds of piers with different structural forms (ie, six normal stresses per point, three principal stresses and their respective angles to three axes ), And compared with the results of space finite element method and reinforced concrete model test. The comparison results show that the stress distributions obtained by the three methods are basically the same, and the stress values of the main parts are also very close. Thus, three-dimensional photoelasticity experiment is still one of the effective methods to analyze the spatial structure, especially the complex spatial structure.