土木与环境工程学报（中英文）2026，Vol.48Issue(3)：128-135,8.DOI:10.11835/j.issn.2096-6717.2025.040
水平荷载下树木迎风区横向单根的大位移模拟方法及其力学特性分析
Modelling and mechanical analysis of large displacement of windward lateral roots of trees under horizontal loads
摘要
Abstract
Windward lateral roots have been shown to play a significant role in the resistance of trees to overturning under typhoons.However,there is a paucity of research focusing on their behaviours under large displacements.Through physical model tests and finite element simulations,the force-displacement curves of root elements under large displacements were obtained.Subsequently,the bilinear softening assumption incorporating the Winkler foundation beam method was used to analyze the response of single windward lateral roots under horizontal loads.Effects of root diameter and length on the peak bending moment and rotational stiffness were investigated.The findings demonstrated that when the root length was less than the critical length,the peak bending moment increased with an increase in diameter and length,and exhibited heightened sensitivity to diameter.Additionally,the overall rotational stiffness and initial rotational stiffness both increased with the increase in diameter;however,the overall rotational stiffness decreased with the increase in length,while the initial rotational stiffness basically remained unchanged.When the root was longer than the critical length,the moment-rotation curve generally no longer changed,so the above indexes were unchanged.The critical length was fitted with root diameter and elastic modulus,which can satisfty the estimation of the critical length of thick roots in engineering.关键词
树木根系/台风/水平荷载/Winkler地基梁/弯矩-转角曲线Key words
tree root/typhoons/lateral load/beam-on-a-nonlinear Winkler foundation/moment-rotation curve分类
建筑与水利引用本文复制引用
王馨怡,张星宇,梁珂,梁腾,杨璐,柯世堂..水平荷载下树木迎风区横向单根的大位移模拟方法及其力学特性分析[J].土木与环境工程学报（中英文）,2026,48(3):128-135,8.基金项目
江苏省自然科学基金(BK20230895) （BK20230895）
国家自然科学基金(52408541、52208326) Natural Science Foundation of Jiangsu Province(No.BK20230895) （52408541、52208326）
National Natural Science Foundation of China(Nos.52408541,52208326) （Nos.52408541,52208326）
