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强度折减理论与有限元数值算法相结合,可以模拟出高边坡的变形和破坏过程。采用有限元强度折减理论对四川省雅安经石棉至泸沽高速公路上某段岩质高边坡进行稳定性分析,以计算不收敛为失稳判据判断其稳定性状态,分别考虑了自然状态、强降雨状态、自然+地震作用和强降雨+地震作用这4种外荷载作用状态及高边坡岩体中结构面的影响,计算了三维高边坡整体应力状态及典型剖面局部安全系数。通过计算分析,为该段高边坡的治理提出了合理的建议。
The combination of strength reduction theory and finite element numerical algorithm can simulate the deformation and failure process of high slope. Based on the strength reduction theory of finite element method, the stability analysis of certain rocky high slope on the asbestos-to-Lugu Expressway in Ya’an, Sichuan Province is carried out. The stability of the rock slope is evaluated by the criterion of non-convergence and instability. The natural states , Heavy rainfall condition, natural + earthquake action and heavy rainfall + seismic action, and the influence of structural surface in high slope rock mass, the overall stress state of three-dimensional high slope and the local safety coefficient of typical section are calculated. Through calculation and analysis, reasonable suggestions are put forward for the treatment of this section of high slope.