[1]王复明,何 航,方宏远,等.交通和运行荷载耦合作用下管道承插口力学响应研究[J].郑州大学学报(工学版),2020,41(04):1-6.
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交通和运行荷载耦合作用下管道承插口力学响应研究(
)
《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]
- 卷:
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41卷
- 期数:
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2020年04期
- 页码:
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1-6
- 栏目:
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- 出版日期:
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2020-08-12
文章信息/Info
- Title:
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Mechanical Analysis of The bell-and-spigot Joints of Pipeline Under The Coupling of Traffic and Running Load
- 作者:
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王复明; 何 航; 方宏远; 李 斌
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- 文献标志码:
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A
- 摘要:
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承插式混凝土管是目前最为常见的城市排水管道结构形式，在管内流体和上覆荷载的耦合作用下可能发生接头破坏，进而引发管道渗漏。本文基于Abaqus和Fluent有限元软件建立了考虑橡胶圈承插口的排水管道三维精细化模型和管内流场模型，在充分考虑管土相互作用，承插口和橡胶圈接触以及管内流体的情况下，借助MpCCI (Mesh-based parallel Code Coupling Interface)平台联立求解了结构和流体模型，重点研究了不同流量、交通荷载大小和作用位置对承插口动力响应的影响规律。结果表明:多场荷载作用下，中心管节的最大主应力和竖向变形最大，且管底和管顶的应力分布规律相同，均受拉，但管底的应力值稍大；流量的改变对承插口的力学响应影响较小；交通荷载幅值大小对承插口的最大主应力和竖向变形的作用较显著，且影响集中在中心管节；荷载作用位置的移动对承插口竖向变形和管顶、底的力学响应影响较明显。
- Abstract:
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The concrete pipe with the bell-and-spigot joints is the most common urban drainage pipe structure, but the coupling of the fluid and the overlying load in the pipe may cause damage to the joint and lead to pipe leakage. Based on Abaqus and Fluent finite element software, this paper establishes a three-dimensional refined model of the drainage pipe with gasketed bell-and-spigot joints and the flow field model inside the pipe. With the interaction of pipe and soil, the contact between the bell-and-spigot joint and the rubber as well as the fluid in the pipe being considered, the structure and fluid model are solved jointly by using MpCCI (Mesh-based parallel Code Coupling Interface) platform. The influence of different flow rates, different traffic load amplitude and different load position on the dynamic response of the socket is mainly studied. The results show that under the multi-field load, the maximum principal stress and vertical deformation of the central pipe joint are the largest, and the stress distribution of the pipe bottom and the pipe top is the same, both are tension stresses, but the stress value at the bottom of the pipe is slightly larger The change of flow rate has a little effect on the mechanical response of the bell-and-spigot joint The magnitude of traffic load amplitude has a significant effect on the maximum principal stress and vertical deformation of the bell-and-spigot joint, and the influence is concentrated on the central pipe joint The movement of the load position has obvious influence on the vertical deformation of the bell-and-spigot joint and the mechanical response of the top and bottom of the pipe.
更新日期/Last Update:
2020-10-06