湖南大学学报（自然科学版）2024，Vol.51Issue(5)：46-55,10.DOI:10.16339/j.cnki.hdxbzkb.2024046
基于应变楔模型的堆载下被动斜桩受力变形分析
Analysis on Stress and Deformation of Passive Battered Piles under Surcharge Based on SW Model
摘要
Abstract
Passive battered piles are mostly applied in the supporting engineering of the excavation foundation pit but are rarely used in the anti-skid engineering of filling bodies,and the engineering character is not yet clear.To analyze the mechanical deformation characteristics of passive battered piles under lateral surcharge,based on the strain wedge model(SW model)and combined with the Boussinesq solution,this paper establishes the deflection differential equation of passive battered piles under lateral surcharge,derives the finite difference solution of the corresponding internal force and lateral displacement of the piles,and then verifies the effectiveness of this method by comparing the results of field tests and indoor model tests.The results show that under the same surcharge,the top lateral displacement and the bending moment of the straight pile are the largest,followed by the positive battered pile,and the negative battered pile is the smallest.The top lateral displacement and the bending moment of the positive and negative battered pile decrease with the inclination angle increase.Under lateral surcharge,the battered pile undergoes"translating and rotating".Within the range of conventional pile body inclination angle(≤20°),the pile at the foot of the slope set as a negatively battered pile with a larger inclination angle towards the center of the pile load can achieve a better engineering effect.关键词
路基工程/堆载/被动斜桩/应变楔模型Key words
roadbed engineering/surcharge/passive battered pile/strain wedge model分类
建筑与水利引用本文复制引用
周德泉,朱沁,王创业,周毅..基于应变楔模型的堆载下被动斜桩受力变形分析[J].湖南大学学报（自然科学版）,2024,51(5):46-55,10.基金项目
国家自然科学基金资助项目(52278329),National Natural Science Foundation of China(52278329) （52278329）
湖南省交通运输厅科技项目(202019,202247),Scientific Research Fund of Hunan Provincial Department of Transportation(202019,202247) （202019,202247）
湖南省研究生科研创新项目(CX20200835),Hunan Provincial Innovation Foundation for Postgraduate(CX20200835) （CX20200835）
