Seismic Response of Earth-Rock Dams with Innovative Antiseepage Walls on the Effect of Microscopic Fluid-Solid Coupling

Jingwei Zhang, Xuanyu Chen, Jia Li () and Shuaiqi Xu
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Jingwei Zhang: School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China
Xuanyu Chen: School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China
Jia Li: School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450002, China
Shuaiqi Xu: Henan Aviation Investment Aviation Basic Industry Development Co., Ltd., HNCA, Zhengzhou 450003, China

Sustainability, 2023, vol. 15, issue 17, 1-27

Abstract: In dykes and dam projects, the microscopic fluid-solid coupling effect from the interaction between soil skeleton and pore water during an earthquake is crucial to consider, as it can lead to dam safety problems. To control seepage in medium- and small-sized dams, polymer antiseepage walls have emerged as effective measures. In recent years, this method has been increasingly utilized in projects worldwide as it is essential for preventing potential dam safety issues. To address concerns related to seismic safety, this study conducts theoretical analysis, model tests, and numerical simulations to investigate the seismic response of earth-rock dams with polymer antiseepage walls, with a specific focus on the microscopic fluid-solid coupling effect. The dynamic viscoelastic constitutive model used in this study incorporates Biot’s theory of dynamic consolidation and the results of dynamic mechanical analysis (DMA) of polymer materials. To validate the model, a centrifuge test is performed, and it is then utilized to study the seismic response of earth-rock dams with polymer antiseepage walls. Furthermore, the influence of factors such as fluid-solid coupling, water level, polymer material density, and wall thickness on the seismic response of dams with antiseepage walls is analyzed. Finally, the seismic safety of the earth-rock dam with the polymer antiseepage wall is thoroughly examined. The results emphasize the need to consider the fluid-solid coupling effect, as factors like water level and design parameters of the antiseepage wall significantly impact the seismic response of earth-rock dams with polymer antiseepage walls.

Keywords: earth-rock dam; polymer antiseepage wall; microscopic fluid-solid coupling; seismic response; numerical analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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