Prestressed concrete cylinder pipe (PCCP) is widely used in hydraulic engineering. The bell‐and‐spigot joint is a weak point along a PCCP pipeline, since damage of joint can affect the operation of the whole pipeline. In this paper, a three‐dimensional numerical model of buried PCCP, considering the simulation of rubber gasket in bell‐and‐spigot joint is established. The fluid–structure coupling of PCCP is accomplished using the Mesh‐based parallel Code Coupling Interface (MpCCI), where the pipe and the surrounding soil are characterized in the software ABAQUS, and the pressurized water is modeled in the software FLUENT. The force and rotation angle at joints of PCCP under different conditions, including surcharge load, loading location, cover depth, and internal pressure, are analyzed. It is shown that the rotation angle of joint exceeds the allowable value, when the surcharge load is greater than 180 kPa. Compared with the effect of surcharge load, the offset distance (i.e., distance between the loading position and the pipe axis) has a greater influence on the development of horizontal displacement and rotation angle. As the offset distance increases, both the horizontal displacement and rotation angle at joints increase first, and they decrease after the peak.

中文翻译：

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服务和附加载荷共同作用下埋入式预应力混凝土圆柱管中钟形和圆锥形接头的力学响应

预应力混凝土圆筒管（PCCP）广泛用于水利工程。钟形和圆锥形接头是PCCP管道的薄弱环节，因为接头的损坏会影响整个管道的运行。本文建立了一个埋藏式PCCP的三维数值模型，并考虑了钟形和锥形接头中的橡胶垫圈的仿真。PCCP的流固耦合是通过基于网格的并行代码耦合接口（MpCCI）完成的，其中管道和周围土壤在ABAQUS软件中进行了特征描述，而加压水在FLUENT软件中进行了建模。分析了不同条件下PCCP接头处的力和旋转角度，包括附加载荷，载荷位置，覆盖深度和内部压力。结果表明，当附加载荷大于180 kPa时，接头的旋转角度超过允许值。与附加载荷的影响相比，偏移距离（即加载位置与管道轴线之间的距离）对水平位移和旋转角度的发展影响更大。随着偏移距离的增加，关节的水平位移和旋转角度均会先增大，而在峰值后减小。