Model test and finite beam element solution of cyclic lateral 
characteristics of piles in sloping ground

PENG Wen-zhe; ZHAO Ming-hua; YANG Chao-wei; ZHAO Heng

doi:10.16285/j.rsm.2022.0186

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Model test and finite beam element solution of cyclic lateral characteristics of piles in sloping ground

更新时间：2026-06-25

- Model test and finite beam element solution of cyclic lateral characteristics of piles in sloping ground
- Vol. 44, Issue 2, Pages: 381-391(2023)
- 作者机构：
  
  1. 湖南大学土木工程学院,湖南,长沙,410082
  2. 湖南大学建筑安全与节能教育部重点实验室,湖南,长沙,410082
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.0186
  CLC： U443.15;U446.1
- Online First：17 February 2023，
  
  Published：2023
- 稿件说明：
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PENG Wen-zhe, ZHAO Ming-hua, YANG Chao-wei, et al. Model test and finite beam element solution of cyclic lateral characteristics of piles in sloping ground[J]. 2023, 44(2): 381-391.
DOI：

PENG Wen-zhe, ZHAO Ming-hua, YANG Chao-wei, et al. Model test and finite beam element solution of cyclic lateral characteristics of piles in sloping ground[J]. 2023, 44(2): 381-391. DOI： 10.16285/j.rsm.2022.0186.

摘要

为了揭示斜坡效应和循环弱化效应共同影响下的斜坡桩水平循环特性，进行了不同循环次数、荷载幅值及坡度下的单向水平循环加载试验，并将水平静载试验作为对照，揭示了桩顶位移、桩身弯矩及地基反力等变化规律。综合考虑二阶效应及桩-土相互作用的影响，对单元刚度矩阵进行了改进，提出了有限杆单元解。将理论预测曲线等与实测曲线及幂级数法计算结果进行了对比，验证了有限杆单元解的合理性。结果表明：桩身弯矩及位移均随循环次数非线性增加，最大弯矩位置逐渐从无量纲深度=1.25下移到=1.75；桩顶无量纲位移与循环次数之间的关系符合幂函数=；当荷载幅值由20 N增加到40 N时，最大无量纲弯矩由0.010增加到0.029，位置均保持在=1.7附近；当坡度由30°增加到60°时，最大无量纲弯矩由0.011（=1）增加到0.025（=2.5）

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