重力坝抗滑稳定性分析有限元模拟

Finite Element Simulation of Anti-Sliding Stability Analysis of Gravity Dam

摘要: 重力坝抗滑稳定是影响工程安全的关键问题之一。重力坝通常建在复杂的基础之上，由于多个脆弱的结构平面形成自然滑动路径，保持其稳定性可能非常具有挑战性。本文对混凝土重力坝进行二维数值模拟，并对混凝土重力坝的抗滑稳定性进行了数值模拟分析。对各工况下的抗滑稳定性进行分析，模拟分析其应力状况以及位移变化的大小情况，计算各个抗滑稳定系数是否在规定范围内，以此判断重力坝的抗滑稳定性。计算结果表明，模拟能自然地描述重力坝错位、开度和滑动等不连续的过程。此外，该方法具有适应性好、计算方便、兼容性高等特点，可作为重力坝抗滑稳定性分析的有效方法。

Abstract: Slip stability of gravity dams is one of the key issues affecting project safety. Gravity dams are usually built on complex foundations, and maintaining their stability can be very challenging due to multiple vulnerable structural planes forming natural sliding paths. In this paper, a two-dimensional numerical simulation of concrete gravity dams is performed and the slip resistance stability of concrete gravity dams is analyzed by numerical simulation. The slip resistance stability analysis under each working condition is calculated, the stress condition as well as the magnitude of the displacement change is simulated, and whether each slip resistance stability coefficient is within the specified range is calculated, so as to judge the slip resistance stability of the gravity dam. The computational results show that the simulation can naturally describe the discontinuous processes such as dislocation, opening and sliding of gravity dams. In addition, the method is characterized by good adaptability, convenient calculation, high compatibility, etc., which can be used as an effective method for the analysis of slip resistance stability of gravity dams.