Abstract
Water storage structures age and deteriorate over time, which can make them vulnerable. There are
many reinforcement methods available to rehabilitate them. Our research focuses on a system for reinforcing the
wall of a concrete tank, subjected to hydrostatic pressure, by additional external prestressing. The role of the
latter will be to relieve the wall of hydrostatic or even hydrodynamic tensile stresses, and allow it to return to an
acceptable service state. This technique of adding external prestressing cables was initially introduced in the
reinforcement and rehabilitation of civil engineering structures, mainly from the 1970s. In this study, a
deterministic analysis is developed for the dimensioning of the external prestressing necessary to absorb part of
the hydrostatic pressure exerted on the wall, taking into account the different instantaneous and deferred stress
losses. Additionally, the hydrodynamic effect is evaluated by the Westergaard method, to analyze the stress state
induced by the fluid-structure interaction with respect to the seismic action. In a second step, a reliability
analysis is developed by considering three random variables, including the compressive strength of the concrete,
the seismic intensity and the eccentricity of external prestressing cables. This reliability analysis is conducted
using a computer code developed with Matlab© software based on the Monte Carlo simulations method to assess
the probability of failure in tension of the circular wall for different seismic intensities. The developed approach
was applied, for a practical example, whose dimensions are realistic. Fragility curves are developed representing
the failure probability in the different levels of seismic acceleration
References
- Hammoum, H., Bouzelha, K., & Aliche, A. (2025). Reinforcement analysis of a water tank wall by external prestressing. The Eurasia Proceedings of Science, Technology, Engineering and Mathematics (EPSTEM), 36, 21-27.
Details
| Primary Language | English |
|---|---|
| Subjects | Classical Physics (Other) |
| Journal Section | Articles |
| Authors | |
| Early Pub Date | October 31, 2025 |
| Publication Date | October 31, 2025 |
| Submission Date | June 4, 2025 |
| Acceptance Date | July 8, 2025 |
| Published in Issue | Year 2025 Volume: 36 |
