东南大学学报（自然科学版）2026，Vol.56Issue(9)：1246-1254,9.DOI:10.3969/j.issn.1001-0505.2026.09.002
有限土压力计算方法研究
Study on calculation method of confined earth pressure
摘要
Abstract
Classical earth pressure theories are based on the semi-infinite space assumption,struggling to adapt to the stress conditions of confined soil masses in engineering.Existing studies mostly focus on backfill-type confined soil,with insufficient attention to in-situ confined soil formed by structure penetration.To address this issue,this paper classifies confined soil into two typical working conditions(backfill and struc-ture penetration),establishes a theoretical calculation equation for confined earth pressure based on the hori-zontal layered element method,proposes a modified earth pressure coefficient K2,and verifies the equation's reliability through centrifuge tests.Parameter influence analysis shows significant differences in the evolution of confined earth pressure between the two conditions:the backfill condition is dominated by the soil arching effect,while the penetration condition is governed by stress redistribution.Adopting the at-rest earth pressure coefficient for the penetration condition leads to a deviation of over 35%,which requires correction using K2.This study establishes a dual-working-condition analysis system for confined earth pressure,enriches relevant calculation methods,and provides theoretical support for the design of engineering structures such as retaining walls and large-diameter piles.关键词
有限土压力/有限土体-填土模型/有限土体-结构物贯入模型/理论计算/参数影响分析Key words
confined earth pressure/confined soil-backfill model/confined soil-structure penetration model/theoretical calculation/parameter influence analysis分类
建筑与水利引用本文复制引用
刘润,肖一凡,李成凤,董智超,尹瑞龙,刘一诺..有限土压力计算方法研究[J].东南大学学报（自然科学版）,2026,56(9):1246-1254,9.基金项目
中国交通建设集团有限公司海岸工程水动力学重点实验室开放基金资助项目(2025-11-093-1002) （2025-11-093-1002）
国家自然科学基金资助项目(42207183). （42207183）
