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采用离心模型试验,研究近海风电场风机基础中的大直径单桩及加翼单桩的承载机制。加翼单桩是基于近海风电场常见的单桩基础,为进一步利用近地表浅层土的土抗力,在泥面下加装稳定翼钢板的新型基础型式。共开展9组离心模型试验,研究不同翼板的尺寸参数(宽度、长度)和埋深以及加载高度条件下加翼单桩的水平承载力。试验结果表明,翼板的设置可以明显增强单桩的水平承载力,增强的幅度与翼板的尺寸参数及埋深有关。研究成果为指导加翼单桩的设计和施工提供了可靠的试验依据。
Centrifuge model test is used to study the bearing mechanism of large-diameter single-pile and single-wing wing in the wind turbine foundation of offshore wind farms. The wing single-wing is based on the common single-pile foundation of offshore wind farms. In order to further utilize the soil resistance of the near-surface shallow soil, a new type of foundation with stable wing steel plates is installed under the mud surface. A total of 9 sets of centrifugal model tests were carried out to study the horizontal bearing capacity of wing single pile under different wing size parameters (width, length), depth of embankment and loading height. The test results show that the setting of the wing plate can obviously enhance the horizontal bearing capacity of the single pile, and the increasing amplitude is related to the size parameter and depth of the wing plate. The research results provide a reliable test basis for guiding the design and construction of wing single pile.