潮汐循环荷载下滩涂光伏短桩基础水平承载力原位试验及累积变形分析研究

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DOI：10.19981/j.CN23-1581/G3.2026.12.016

中图分类号： TU753.3

文献标志码：A

文章编号：2095-2945（2026）12-0060-04

Abstract： The foundations of tidal flat photovoltaic （PV） projects face unique challenges from cyclic tidal loading， exhibiting obvious time-dependent and complex bearing characteristics. This study systematically investigates the long-term performance of short pile foundations in tidal flats under cyclic loading through in-situ tests. A precast concrete square pile was used， and four test conditions were designed： static load， one-way cyclic load， reciprocating cyclic load， and variable-amplitude cyclic load. The results indicate that the bearing capacity and stiffness of the pile foundation show significant degradation under cyclic loading. The development of cumulative deformation exhibits a distinct three-stage pattern： rapid growth， stabilization， and accelerated failure. Notably， when the load amplitude ratio exceeds 0.5， the degradation of bearing capacity and the increase in cumulative deformation are significantly exacerbated. Based on these findings， a predictive model for cumulative deformation considering cyclic effects was established， which can effectively describe the evolution of pile deformation in a tidal environment. The findings of this study provide crucial theoretical and technical guidance for the design of short pile foundations for tidal flat PV projects， which is of great practical significance for ensuring project safety and promoting the development of marine renewable energy.

Keywords： short pile foundation; cyclic load; bearing characteristics; cumulative deformation; prediction model

滩涂地区作为高潮线与低潮线之间的特殊地带[1]，其地质条件呈现出软土层厚、含水率高、渗透性差等特点。（剩余4772字）