摘要
为研究富水地层基坑群开挖空间效应,文章基于民祥路市政道路工程,利用有限元模型,对比分析了依次或同时开挖单侧双坑、对侧双坑和对侧四坑3种工况。结果表明:(1)单侧双坑施工依次和同时开挖对桥梁墩柱的变形影响几乎相同;(2)对侧双坑两坑同步开挖时桥梁墩柱横向水平位移较依次开挖降低,桥梁墩柱的沉降值具有非线性叠加效应;(3)对侧四坑依次开挖和分侧开挖时,后开挖基坑均对桥梁墩柱产生了更大的影响。
In order to study the spatial effect of excavation of foundation pit groups in water-rich strata,based on the municipal road project of Minxiang Road,three working conditions of sequential or simultaneous excavation of single-side double pits,opposite-side double pits,and opposite-side four pits were comparatively analyzed using a finite element model.The results show that:(1)the deformation effects on bridge piers and columns are almost the same for single-side double-pit construction in sequential and simultaneous excavation;(2)the transverse horizontal displacements of bridge piers and columns are reduced when two pits of opposite-side double-pit are excavated synchronously compared with sequential excavation,and the settlement values of bridge piers and columns have a nonlinear superposition effect;(3)when four pits of double-side are excavated in sequential and sub-side excavation,the later excavated pits both have a bigger effect on bridge piers and columns.
作者
邵毅安
蒋超
SHAO Yian;JIANG Chao(Jiangsu Jian&Yan Construction Engineering Quality Safety Appraisal Co.,Ltd.,Nanjing Jiangsu 210008 China)
出处
《土木工程与绿色建筑》
2025年第2期109-113,共5页
CIVIL ENGINEERING AND GREEN BUILDING
关键词
富水地层
基坑群开挖
邻近桥梁
空间效应
water-rich strata
foundation pit groups excavation
adjacent bridge
spatial effect
作者简介
邵毅安,男(1997-),江苏建研建设工程质量安全鉴定有限公司,助理工程师,研究方向为基坑及建筑结构。
