重庆大学学报2025，Vol.48Issue(8)：14-27,14.DOI:10.11835/j.issn.1000-582X.2024.273
砂土中梅花型桩水平承载特性
Bearing characteristics of plum-blossom pile under lateral loads in sand
摘要
Abstract
Plum-blossom pile is a novel kind of new cross-sectional shaped pile,and at present,there is no relevant research on the bearing characteristics of plum-blossom pile under lateral load.Based on the theory of circular hole expansion,the calculation method of soil displacement around plum-blossom pile in sand during pile sinking is established.With considering the special-shaped effect of plum-blossom pile section,the soil squeezing displacement in the positive direction of coordinate axis is obtained by using the principle of coordinate transformation and superposition on the basis of Hooke's law.The differential equation of pile deflection curve is derived by using m method and its difference solution,and the reliability of the established theoretical method is verified by comparing with the experimental results.The results show that the horizontal displacement of soil between plum-blossom pile and circular pile with equal cross-section is similar.With the increase of horizontal load,the horizontal displacement first increases and then decreases,and the horizontal displacement of soil near plum-blossom pile is about 73.5%of that of circular pile with equal cross-section.The vertical squeezing force of plum-blossom pile on the soil facing surface under horizontal load is small,and the vertical displacement fluctuates with the increase of horizontal load.With the increase of horizontal load,the horizontal displacement of soil in the middle of plum-blossom pile first increases and then decreases,and the maximum horizontal displacement is about 75%of that of circular pile with equal cross section.关键词
梅花型桩/承载特性/水平荷载/m法/模型试验Key words
plum-blossom pile/bearing characteristics/lateral loads/m method/model test分类
建筑与水利引用本文复制引用
邓友生,李龙,肇慧玲,张克钦..砂土中梅花型桩水平承载特性[J].重庆大学学报,2025,48(8):14-27,14.基金项目
国家自然科学基金项目(51878554) （51878554）
陕西省自然科学基础研究计划重点项目(2018JZ5012).Supported by the National Natural Science Foundation of China(51878554),and the Key Project of Shaanxi Natural Science Basic Research Plan(2018JZ5012). （2018JZ5012）
