地震作用下柔性无面板加筋路堤失效模式研究

Study on Failure Mode of Flexible Panelless Reinforced Embankment under Earthquake

针对岩土工程领域边坡防护抗震问题,建立柔性无面板加筋路堤有限元计算模型,重点讨论柔性无面板加筋路堤在地震作用下的失效模式,从中提炼总结地震作用下柔性无面板加筋路堤潜在破裂面的分布规律,提出一种适用于柔性无面板加筋路堤的多折线简化破裂面,并与有面板加筋土挡墙破裂面的3种传统假定进行比较分析。结果表明:对于柔性无面板加筋路堤失效模式的确定方法,采用多折线简化破裂面更为合适,该破裂面为岩土工程领域边坡防护抗震问题提供了一种新的设计思路,为今后的工程推广提供了理论基础。

Aiming at the seismic protection problem of slope protection in geotechnical engineering,the finite element calculation model of flexible non-panel reinforced embankment is established,and the failure mode of flexible non-panel reinforced embankment under earthquake action is discussed and summarized.Based on the distribution law of potential rupture surface,a simplified rupture surface suitable for flexible non-panel reinforced embankment is proposed and compared with the three traditional assumptions of rupture surface of panel reinforced soil retaining wall.The results show that the method for determining the failure mode of the non-panel reinforced embankment is more suitable by simplifying the rupture surface with multi-fold line.The rupture surface provides a new design idea for the seismic protection of slope protection in geotechnical engineering field,and provides a theory basis for future engineering promotion.