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花瓶墩因其优美的造型,在近年来的工程中应用十分广泛。但独特的造型也导致其受力状况不同于普通的圆形或矩形墩柱。其墩身静力计算及地震计算尚可近似按矩形墩计算,但墩顶区域受力复杂,用杆系单元或板单元模拟都难以反应真实的受力情况。现阶段,此种结构在设计中并没有有效且简便的公认算法。本文针对此种情况进行分析,并以某工程实例为依据,采用有限元实体单元模拟花瓶墩各部分的受力状况,得到其分叉部位的弯矩及应力,分别用弯矩分析及应力分析进行配筋验算,并对这两种方法所得结果进行分析比较,相互验证。此外,对墩顶支座处抗拉、抗剪分别进行验算,并得出配筋结果。希望本文的分析及计算流程,可为今后类似结构设计提供参考。
Vase pier because of its beautiful shape, in recent years, the project is widely used. But the unique shape also led to its force situation is different from the ordinary circular or rectangular pier. The static calculation and seismic calculation of the piers can still be approximated by rectangular piers. However, the forces in the pier top are complex and it is difficult to simulate the true force with the rod-shaped elements or plate elements. At this stage, this kind of structure does not have an effective and simple accepted algorithm in the design. In this paper, based on the analysis of this case, and based on an engineering example, the finite element element is used to simulate the force condition of each part of the vase pier, and the moment and stress of the bifurcation part are obtained. The moment and stress analysis Reinforcement checking, and the results of these two methods to analyze and compare, verify each other. In addition, the abutment at the pier at the tensile, shear were checked, and obtained the reinforcement results. I hope this article’s analysis and calculation process can provide reference for similar structural design in the future.