基于PLAXIS模拟的深基坑支护与开挖工程对周边环境的影响分析  

Analysis on the Influence of Deep Foundation Pit Support and Excavation Engineering on the Surrounding Environment Based on PLAXIS Simulation

作　　者：徐超 吴飞飞 吴昱东 Xu Chao;Wu Feifei;Wu Yudong(Shenzhen Geokey Group Co.,Ltd.,Shenzhen 518055,China)

机构地区：[1]深圳市工勘岩土集团有限公司,深圳518055

出　　处：《绿色建造与智能建筑》2025年第2期52-55,77,共5页Green Construction and Intelligent Building

摘　　要：以深圳市某深基坑支护及土方开挖工程为研究对象,采用三维有限元PLAXIS分析软件,研究基坑支护及土体卸载作用对邻近既有建筑物、市政道路、管线的影响,预测基坑的变形,分析基坑开挖至坑底周边环境的位移场变化,验证支护方案的可行性。数值模拟结果与基坑变形监测数据分析表明,基坑开挖对周边环境的影响较小,满足结构变形控制要求,为施工提供理论依据及变形参考值。This research adopts 3D finite element PLAXIS analysis software and takes a deep foundation pit support and earthwork excavation project in Shenzhen City as the analytical object.Through studying the influence of foundation pit support and soil unloading on adjacent buildings,municipal roads and pipelines,predicting the deformation of foundation pit,and analyzing the displacement field change from foundation pit excavation to the surrounding environment,the feasibility of the support scheme is verified.The results of numerical simulation and deformation monitoring show that the excavation has little influence on the surrounding environment,which can meet the requirements of structural deformation control and provide theoretical basis and deformation reference value for construction.

关 键 词：桩锚支护 PLAXIS 数值模拟 影响分析 

分 类 号：TU17[建筑科学—建筑理论]