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高速公路坡面滚石自由飞落分析模型

, PP. 14-17

Keywords: 路基工程,岩质边坡,坡面滚石,滚石轨迹方程,防护网

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Abstract:

为了有效防治高速公路边坡坡面滚石破坏,建立了滚石运动自由飞落分析模型,计算了滚石落地后的水平运动距离,由能量守恒定律推导了滚石在防护栏处的撞击能,并由撞击能确定合理的防护方式。计算结果表明滚石撞击坡面后的水平运动距离(2.156m)小于撞击点到公路路缘的水平距离(2.820m),滚石飞落至地面的撞击能为132kJ,设计采用型号为AXI-015(防护能级为150kJ)的被动防护网,可对高速公路坡面滚石灾害进行有效防护。

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