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- Title
An Efficient Seepage Element Containing Drainage Pipe.
- Authors
Xia, Xiaozhou; Xu, Xinxiang; Gu, Xin; Zhang, Qing
- Abstract
Drainage pipes are often positioned downstream of embankments to mitigate pore pressure, thereby reducing the risk of dam failure. Considering that the size of drainage pipes is much smaller than that of embankment dams, directly discretizing the drainage pipes will generate a huge number of elements. Therefore, this paper proposes a seepage element containing drainage pipes. In this element, the permeability of the drainage pipe is taken as the third type of permeable conductivity condition, and it is considered in the energy functional. The governing equations for the steady-state and the transient seepage element containing drainage pipe are derived using the variational principle, and the infiltration matrix, equivalent nodal seepage array, and water storage matrix of the seepage element containing drainage pipe are obtained. In conjunction with the user-defined element module UEL of ABAQUS 2016 software, the established seepage element containing drainage pipe is programmed. The accuracy and efficiency of the proposed seepage element containing drainage pipe are verified through seepage field simulations of three examples. Finally, the influence of the permeable conductivity of drainage pipes on the pressure reduction effect is investigated, providing a reference for the layout of drainage pipes in embankment defense systems.
- Subjects
DRAINAGE pipes; EMBANKMENTS; SEEPAGE; DAM failures; EARTH dams; VARIATIONAL principles; WATER storage
- Publication
Water (20734441), 2024, Vol 16, Issue 10, p1440
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w16101440