基于CDP模型光伏竹节桩水平承载性能数值分析

王宇轩; 龚晓南; 周佳锦; 张日红

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

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (1) : 55-63. DOI: 10.19912/j.0254-0096.tynxb.2024-1484

基于CDP模型光伏竹节桩水平承载性能数值分析

王宇轩¹, 龚晓南¹, 周佳锦¹, 张日红²

作者信息 +

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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文章历史 +

摘要

基于浙江某光伏工程的现场静载试验,利用ABAQUS有限元软件建立使用混凝土塑性损伤（CDP）模型的预应力高强混凝土（PHC）竹节桩三维数值模型,分析了竹节直径、竹节间距和竖向荷载对水平承载性能影响。研究表明：桩身弯矩主要集中在地面以下0~10d（d为桩身直径）的范围,桩身最大弯矩出现在地面以下3.5d~5.0d处,且随水平荷载增大而下移;竹节直径不大于1.5d时,竹节直径每增加10%,水平承载性能约上升3%;竹节间距小于5.0d有助于保持优良的承载性能,小直径桩设置竹节间距为1 m是较为合理的;竖向荷载增大到其设计值可提高水平承载力18%。

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%.

导出引用

王宇轩, 龚晓南, 周佳锦, 张日红. 基于CDP模型光伏竹节桩水平承载性能数值分析[J]. 太阳能学报. 2026, 47(1): 55-63 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1484

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

中图分类号： TU473

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