深基坑施工对邻近建筑变形影响分析
摘要:结合昆明某基坑项目，采用有限元软件MIDAS GTS进行数值建模，设立周边无建筑物、建筑纵墙平行于基坑、建筑纵墙垂直于基坑3种情形，对基坑地表沉降及邻近建筑变形进行数值模拟。研究结果表明：（1）邻近建筑物底板靠近基坑的一侧沉降较大，建筑物整体呈现向基坑倾斜，底板宽度方向两端同步下沉、对称凹陷，相比之下，纵墙垂直于基坑时建筑沉降值较小；（2）对于无建筑或建筑物纵墙平行于基坑情形，基坑地表最大沉降出现在距坑边约5~7.5 m范围处，约为（0.5~0.75）H（H为基坑深度）；对于建筑物纵墙垂直于基坑情形，基坑地表最大沉降出现在距坑边约9~12 m处，约为（0.9~1.2）H。
Abstract:Combined with a foundation pit project in Kunming, numerical modeling was established using finite element software MIDAS GTS. Three numerical simulations were carried out on the surface settlement of the foundation pit and deformation of the neighboring buildings, including no buildings in the surrounding, the longitudinal wall of the building parallelling to the foundation pit, and the longitudinal wall of the building being perpendicular to the foundation pit. The results show that: (1) the settlement of the floor plate of the neighboring building near the pit is larger, the building as a whole is tilted to the pit, and the two ends of the floor plate in the width direction are synchronously sinking and symmetrically concave, compared to the settlement of the building when the longitudinal wall is perpendicular to the pit, and (2) in the case of the no building or building with longitudinal wall parallel to the pit, the maximum settlement of the surface of the pit occurs in the range of 5~7.5 m from the edge of the pit, which is approximately (0.5~0.75)H (H is the depth of the pit); for the case where the longitudinal wall of the building is perpendicular to the pit, the maximum settlement of the surface of the pit occurs at a distance of about 9~12 m from the edge of the pit, which is about (0.9~1.2)H.
中文标题：
深基坑施工对邻近建筑变形影响分析
Impact Analysis of Deep Foundation Pit Construction on Deformation of Adjacent Buildings
作者：
关艳丽,李育红,,李家艳,段志超,徐永兵
Guan Yanli,Li Yuhong,,Li Jiayan,Duan Zhichao,Xu Yongbing
作者简介:关艳丽，女，1982年生，云南曲靖人，大学本科，高级工程师，主要从事岩土工程设计与研究。E-mail：233257126@qq.com通讯作者:李育红，男，1974年生，陕西长安人，大学本科，正高级工程师，主要从事岩土工程及公路工程设计与研究。E-mail：1136185944@qq.com
通讯地址：
云南建投第一勘察设计有限公司，云南昆明 650102
YunnanConstructionInvestmentFirstSurveyandDesignCo.,Ltd.,Kunming650102,Yunnan,China
中图分类号:TU470
doi:10.3969/j.issn.1007-2993.2024.04.010
出版物：岩土工程技术
收稿日期:2023-03-28
修回日期:2023-06-28
录用日期:2023-11-08
网络出版日期:2024-08-09
刊出日期:2024-08-09
关键词:深基坑施工,邻近建筑物,有限元技术,沉降变形
Key words:deep foundation construction,adjacent buildings,finite element technique,settlement deformation
文档包含图片数量：图片(9)张
文档包含表格数量：表格(1)个
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