Effects of vertical loading on lateral screw pile performance
Effects of vertical loading on lateral screw pile performance
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DOI：
10.1680/jgeen.16.00114
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
T. Al-Baghdadi;Michael Brown;J. Knappett;A. H. Aldefae
中科院分区：
文献类型：
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作者：
T. Al-Baghdadi;Michael Brown;J. Knappett;A. H. Aldefae
随着海上风能进入更深的水域部署，该行业面临着新的挑战。为了应对这些挑战，需要新的高效的基础解决方案。一个潜在的解决方案是提高陆上螺旋桩的档次，但它们需要对新的几何形状和苛刻的加载制度进行性能验证。本文对砂土中螺旋桩在竖向和横向联合荷载作用下的性状进行了三维有限元分析研究。在研究中，对固定芯径的桩，在轴向和横向联合荷载作用下，改变了螺旋桩的长度和螺旋板直径。并将计算结果与相同芯径的直桩进行了比较。分析结果表明，竖向压缩荷载提高了螺旋桩的横向承载能力，而竖向上拔荷载使其水平承载能力略有下降。这种增强的侧向能力的不利之处是...
The offshore wind energy sector faces new challenges as it moves into deeper water deployment. To meet these challenges, new and efficient foundation solutions are required. One potential solution is to upscale onshore screw piles but they require verification of performance for new geometries and demanding loading regimes. This paper presents a three-dimensional finite-element analysis investigation of screw pile behaviour when subjected to combined vertical and lateral loading in sand. In the investigation, the screw pile length and helical plate diameter were varied on piles with a fixed core diameter while subjecting the piles to combined axial and lateral loading. The results were compared with results from straight shafted piles with the same core diameter. The results of the analysis revealed that vertical compression loads increased the lateral capacity of the screw piles whereas vertical uplift loads marginally reduced the lateral capacity. The downside of this enhanced lateral capacity is that t...