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目前对于三排桩的研究与应用实例较少。本文利用有限元对某高边坡三排桩的变形和内力性状进行了详细分析,并对后两排桩长度的影响也进行了对比研究。认为前排桩起到关键作用,后两排桩起到反向拉锚作用。根据有限元分析结果,对三排桩的受力机理进行了阐述,认为中排桩的抗侧能力相对较弱,因此提出了基于弹性地基梁法的两种计算模型,并通过理正软件对双排桩模型简化算法进行了校核,验证结果表明该简化算法是可行且有效的。
At present, there are few examples of research and application of three rows of piles. In this paper, the deformation and internal force characters of three rows of piles with a high slope are analyzed in detail by finite element method, and the influence of the length of the two rows of piles is also studied. Think that the front pile plays a key role, and the two rows of piles play the role of pulling the anchor in the opposite direction. Based on the results of finite element analysis, the stress mechanism of three rows of piles is expounded, and the lateral resistance of the mid-row piles is relatively weak. Therefore, two calculation models based on the elastic foundation beam method are proposed. The double-row pile model simplification algorithm is verified, and the verification results show that the simplified algorithm is feasible and effective.