NUMERICAL ANALYSIS OF LATERAL RESPONSE OF PHOTOVOLTAIC NODULAR PILES BASED ON CDP MODEL

Wang Yuxuan; Gong Xiaonan; Zhou Jiajin; Zhang Rihong

doi:10.19912/j.0254-0096.tynxb.2024-1484

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (1) : 55-63. DOI: 10.19912/j.0254-0096.tynxb.2024-1484

NUMERICAL ANALYSIS OF LATERAL RESPONSE OF PHOTOVOLTAIC NODULAR PILES BASED ON CDP MODEL

Wang Yuxuan¹, Gong Xiaonan¹, Zhou Jiajin¹, Zhang Rihong²

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Abstract

Based on field static load tests from a photovoltaic project in Zhejiang, a three-dimensional numerical model of prestressed high-strength concrete （PHC） nodular piles are established using ABAQUS finite element software, incorporating the concrete damaged plasticity （CDP） model. The study analyzes the effects of nodular diameter, spacing between nodules, and vertical load on their lateral load-bearing performance. The findings reveal that the bending moment of the pile body is mainly concentrated within the range of 0~10 pile diameters （d） below ground level, with the maximum bending moment occurring at 3.5d~5.0d below the surface, and progressively shifting downward as the horizontal load increases. The nodular diameter not exceeding 1.5d, with each 10% increase, enhances lateral load-bearing capacity by approximately 3%. Spacings less than 5d between nodules are conducive to sustaining superior load-bearing performance, with a 1 m nodular spacing for smaller diameter piles deemed optimal. Elevating the vertical load to its designed capacity augments horizontal load-bearing ability by 18%.

Key words

offshore PV power / PHC nodular piles / ABAQUS numerical simulation / lateral load-bearing capacity / concrete damaged plasticity model / nodule size

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Wang Yuxuan, Gong Xiaonan, Zhou Jiajin, Zhang Rihong. NUMERICAL ANALYSIS OF LATERAL RESPONSE OF PHOTOVOLTAIC NODULAR PILES BASED ON CDP MODEL[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 55-63 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1484

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