华东交通大学学报2025，Vol.42Issue(6)：82-90,9.
有限土体基坑围护结构侧移及地表沉降规律试验研究
Experimental Study on Lateral Displacement and Surface Settlement Law of Foundation Pit Retaining Structures with Limited Soil
摘要
Abstract
To explore the variation laws of horizontal displacement of foundation pit retaining piles and surface settlement outside the pit under finite soil conditions,an excavation model test was carried out on a foundation pit with semi-infinite soil mass on one side and finite soil on the other three sides.The variation laws of internal force,deformation of retaining piles and surface settlement outside the pit under the condition of limited soil mass were obtained and the relationship between the horizontal displacement of retaining piles and surface settle-ment was further analyzed.The results show that the horizontal displacement of retaining piles is positively cor-related with the soil width B,and the reduction of soil width can effectively reduce the horizontal displacement at the top and along the body of retaining piles;the maximum surface settlement increases first and then decreas-es with the increase of soil width B.Under the condition of limited soil width,the soil width has a significant in-fluence on the surface settlement outside the foundation pit,and there is a critical value of soil width B;the maxi-mum bending moment of the retaining pile body is positively correlated with the soil width B,and the soil width has a small influence on the position of the maximum bending moment.The research can provide theoretical ba-sis and basis for the design and construction of limited soil foundation pit in the future.关键词
有限土体基坑/模型试验/水平位移/地表沉降Key words
limited soil foundation pit/model test/horizontal displacement/surface settlement分类
建筑与水利引用本文复制引用
方焘,朱晓杰,方文苑,欧阳沛琦,夏良利..有限土体基坑围护结构侧移及地表沉降规律试验研究[J].华东交通大学学报,2025,42(6):82-90,9.基金项目
国家自然科学基金项目(52168048) （52168048）
