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边坡桩基受力特性的离心模型试验

, PP. 35-39

Keywords: 道路工程,离心试验,边坡桩基,受力特性,水平荷载,竖向荷载

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Abstract:

鉴于采用常规试验方法对临空面的边坡桩基较难进行分析,利用基于相似理论的土工离心试验机,通过缩小原型尺寸的方式对其进行研究。在土工离心试验中,采用自制的加载系统分别对端承桩与摩擦桩这2种不同形式的桩基施加水平荷载和竖向荷载,给出边坡桩基受力性能的研究方法,并进行了受力机理分析。试验结果表明边坡桩基受较小的水平荷载时,2种桩基形式受力性能相差不大;摩擦桩在承受竖向荷载时承载性能较差,对桩周土体扰动较大,不宜作为边坡桩基的形式。

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