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建立了预应力钢筒混凝土管(PCCP)弯管的三维有限元模型。分析计算了PCCP弯管在地震作用下的动力响应。考虑了三种不同的边界条件:简单边界条件、粘性边界条件和粘弹性边界条件。通过对比三种边界条件的计算结果,得出粘弹性边界是最接近实际情况的人工边界。计算结果可供类似结构抗震设计参考。
A three-dimensional finite element model of prestressed concrete cylinder (PCCP) elbow was established. The dynamic response of PCCP pipe under earthquake is analyzed and calculated. Three different boundary conditions are considered: simple boundary conditions, viscous boundary conditions and viscoelastic boundary conditions. By comparing the calculated results of the three boundary conditions, it is concluded that the viscoelastic boundary is the artificial boundary closest to the actual situation. The calculation results can be used as a reference for the similar structure seismic design.