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This session explores the thermal behavior of concrete arch dams and the impact of seasonal temperature variations on structural performance. Using finite element analysis, it highlights how thermal gradients, reservoir interactions, and lift joint behavior influence stress distribution, displacement, and potential cracking. Attendees will learn how to model temperature-induced effects, evaluate critical areas under summer and winter conditions, and assess long-term safety and stability of aging dams. The session also emphasizes the importance of non-linear material modeling and proper boundary conditions for accurate structural prediction.
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Description
In this session, we will present a practical approach to understanding and evaluating the thermal behavior and seasonal effects on concrete arch dams. The session begins by exploring how temperature gradients, solar radiation, and reservoir interactions influence stress distribution and structural displacement. Participants will then learn how lift joints interact with these thermal effects, potentially becoming critical planes for cracking or localized deformation. Guidance on FEM modeling techniques, boundary conditions, and monitoring strategies will be provided to help engineers assess long-term dam safety, structural performance, and durability under real operational and environmental conditions.
Key Points
Seasonal Thermal Effects on Concrete DamsExamine how daily and seasonal temperature variations generate internal stresses and influence structural performance of arch dams.
Temperature-Induced Stress GradientsUnderstand how uneven heating and cooling across the dam cross-section affects tensile and compressive stress distribution.
Lift Joint Influence on Structural ResponseAnalyze the role of horizontal construction joints in modifying thermal stress transfer and localized deformation.
Practical FEM Modeling GuidanceLearn best practices for incorporating thermal loads, boundary conditions, and reservoir interactions to accurately predict dam behavior and evaluate long-term safety.
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