湖南大学学报（自然科学版）2025，Vol.52Issue(9)：28-37,10.DOI:10.16339/j.cnki.hdxbzkb.2025084
考虑土体非均匀收敛的成层地基中基坑旁侧桩基响应分析
Analysis on Pile Response Adjacent to Foundation Pit in Layered Ground Considering Non-uniform Soil Convergence
摘要
Abstract
To address the response of adjacent piles caused by foundation pit excavation,this study first adopts the image source method to deduce the calculation expression for the soil free displacement field around a foundation pit from the deformation curve of the retaining wall using non-uniform soil convergence mode.Subsequently,through incorporating the layering property of soil ground and introducing the Vlasov foundation model,the differential equation governing the response of adjacent piles induced by foundation pit excavation is established using the two-stage approach,and then its theoretical solution and calculation method are developed based on the finite difference method.Finally,two typical case studies are performed and discussed to verify the reliability of the developed theoretical solution,and the influences of elastic modulus of layered soils and the non-uniform convergence coefficient on the response of adjacent piles are calculated and discussed.The results indicate that the change of soil parameters in the soil layer at the bottom of the foundation pit has the most significant impact on the response of adjacent piles.At the interface of layered ground,the shearing force of adjacent piles has a turning point,while the corresponding foundation reaction shows an abrupt change.With the increase of the non-equal soil convergence coefficient,both the horizontal displacement of adjacent piles and foundation reaction gradually increase at the upper part while decreasing at the lower part.In addition,the influence at the upper part is more remarkable than that at the lower part,while the influence on the shear force and bending moment of adjacent piles show opposite patterns.关键词
基坑开挖/邻近桩/土体非均匀收敛/成层地基Key words
excavation of foundation pit/adjacent piles/non-uniform soil convergence/layered ground分类
资源环境引用本文复制引用
黄明华,陆锦斌,王克平,钟煜轩,周苏华..考虑土体非均匀收敛的成层地基中基坑旁侧桩基响应分析[J].湖南大学学报（自然科学版）,2025,52(9):28-37,10.基金项目
国家自然科学基金资助项目(52378339),National Natural Science Foundation of China(52378339) （52378339）
湖南省自然科学基金资助项目(2023JJ30135),Natural Science Foundation of Hunan Province(2023JJ30135) （2023JJ30135）
长沙市自然科学基金资助项目(kq2208031,kq2402 072),Changsha Natural Science Foundation(kq2208031,kq2402072) （kq2208031,kq2402 072）
