福州大学学报（自然科学版）2017，Vol.45Issue(2)：190-198,9.DOI:10.7631/issn.1000-2243.2017.02.0190
相邻双基坑开挖相互影响二维性状分析
Two-dimensional characteristic analysis on interaction effect of twin adjacent excavations
摘要
Abstract
A two-dimensional finite element model for the actual twin adjacent foundation pits was es-tablished by PLAXIS software, in which the Hardening Soil model was used as the soil constitutive model. The impacts of synchronous excavation on the displacement of surrounding soils, internal forces and deformations of supporting structures of the adjacent foundation pits were discussed. Also, the range of influenced surrounding soils of adjacent excavations and the deformation features of supporting structures were investigated by considering excavation sequence and different distance between adja-cent excavations. Further, the deformations of supporting structures under synchronous excavation were measured. The results indicate that the uploading due to ajacent excavation exerts significant impacts on soil settlement between the twin adjacent excavations, basal-heave, surface settlement outside the excavations, internal force and deformation of supporting structures. The distance between adjacent ex-cavations, excavation sequence and supporting pattern are the main influencing factors.关键词
相邻基坑/相互影响/同步开挖/基坑间距/开挖工序Key words
adjacent foundation pits/interaction/synchronous excavation/distance between adjacent excavations/excavation sequence分类
建筑与水利引用本文复制引用
叶建峰,林海,颜桂云..相邻双基坑开挖相互影响二维性状分析[J].福州大学学报（自然科学版）,2017,45(2):190-198,9.基金项目
国家自然科学基金资助项目(41272299) （41272299）
福建省高校专项基金资助项目(JK2011034) （JK2011034）
福建省教育厅重点资助项目(JA14210) （JA14210）
福建省自然科学基金资助项目(2014J01171) （2014J01171）
