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依托岩质边坡坡顶建筑工程实例,利用FLAC3D软件建立数值计算模型,分析了桩端进入潜在破裂面以下和位于潜在破裂面以上两种情况下,建筑岩质边坡沿潜在破裂面滑移的安全系数。通过强度折减法改变潜在破裂面的内摩擦角和黏聚力的取值,模拟计算在强度参数不同取值情况下,建筑岩质边坡的安全系数。结果表明:桩端进入潜在破裂面以下时,建筑岩质边坡的安全系数比桩端位于潜在破裂面以上时提高4倍以上。对本工程而言,桩端进入潜在破裂面以下和桩端位于潜在破裂面以上两种情况都可以满足规范对边坡安全系数要求,本工程设计具有较大的安全度。
Relying on the example of rock slope construction project, FLAC3D software was used to establish the numerical calculation model. Under the circumstances that the pile tip is below the potential fracture surface and above the potential fracture surface, the rock slope of the building slides along the potential fracture surface The safety factor. Through the strength reduction method to change the value of the internal friction angle and cohesion of the potential fracture surface, the safety factor of the rock slope is simulated and calculated under different values of the strength parameters. The results show that when the pile tip enters the potential rupture surface, the safety coefficient of the rock slope is more than 4 times higher than that when the pile tip is above the potential rupture surface. For the project, the pile end below the potential rupture surface and the pile tip located above the potential rupture surface both meet the requirements of the code for the slope safety factor, and the project design has greater safety.