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高烈度震区岩质边坡的失稳垮塌已成为制约我国基础设施建设快速发展的重大问题。以成兰铁路沿线大型顺层边坡控制工程为依托,针对地震荷载下顺层岩质边坡响应特性和抗滑桩控制效果,采用ABAQUS有限元分析软件建立数值计算模型,分析了不同振幅、频率及地震波持续时间对不同厚度顺层边坡位移幅值的影响规律。并通过地震作用下有无抗滑桩的顺层岩质边坡的承载特性,分析了抗滑桩的阻滑效应。数值分析结果表明:顺层岩体边坡滑体累积位移随地震荷载振幅呈抛物线式递增,随振动时间线性递增,而随滑体厚度增加线性递减,且高频地震波对顺层边坡的影响越小。此外,双排抗滑桩在顺层岩体边坡加固中的抗震作用明显。
The collapse of the rock slope in the high-intensity earthquake area has become a major issue that restricts the rapid development of China’s infrastructure construction. Based on the control project of the large-scale bedding slope along the Chenglan railway, the numerical simulation model of ABAQUS finite element analysis software was established for the response characteristics of the rock mass slope and the anti-slide pile under seismic load. The effects of different amplitude, Frequency and seismic wave duration on different thickness of bedding slope displacement amplitude. Through the bearing characteristics of bedding rock slope with or without anti-slide piles under earthquake action, the anti-slip effect of anti-slide piles is analyzed. The numerical results show that the cumulative displacements of slide bodies along bedding rock mass slope increase parabolically with the amplitude of seismic load, increase linearly with the vibration time, decrease linearly with the increase of slide thickness, and influence of high frequency seismic waves on bedding slope The smaller. In addition, the anti-quake effect of double-row anti-slide piles in the reinforcement of bedding rock mass is obvious.