摘要
本文基于某沿海城市地下异形建筑基坑工程,通过数值模拟讨论了地下异形建筑基坑的两种基坑开挖方案:逐步挖掘方案和同步挖掘方案。根据不同的挖掘方案,分析基坑周边土壤的变形特征、支护结构的横向变形以及支撑轴向力的分布情况。不仅揭示了地下异形建筑基坑的变形规律,确定了安全经济的挖掘方法,也通过现场监测试验,揭示了地下异形建筑基坑支撑结构的变形特征和应力演化行为。得出的结论是:同层同步分区对称开挖的施工方法更有利于控制基坑整体变形,而且圆形支护结构不仅变形均匀,“拱顶效应”对基坑也具有一定的约束作用。研究结果可为类似工程的设计与建造提供指导。
Based on a coastal city's underground irregular building foundation pit project,this article discusses two excavation schemes for underground irregular building foundation pits through numerical simulation,namely gradual excavation scheme and synchronous excavation scheme.Based on different excavation plans,this article analyzes the deformation characteristics of the soil around the foundation pit,the lateral deformation of the support structure,and the distribution of the axial force of the support.It not only reveals the deformation law of underground irregular building foundation pits,but also determines safe and economical excavation methods.Through on-site monitoring experiments,the deformation characteristics and stress evolution behavior of the support structure of underground irregular building foundation pits were also revealed.The conclusion is that the construction method of synchronous and symmetrical excavation in the same layer is more conducive to controlling the overall deformation of the foundation pit,and the circular support structure not only has uniform deformation,but also has a certain constraint effect on the foundation pit due to the"arch effect".The research results can provide guidance for the design and construction of similar projects.
作者
马乐强
MA Le-qiang(South China University of Technology,Guangzhou 510640,China)
出处
《价值工程》
2023年第32期108-110,共3页
Value Engineering
关键词
沿海城市
异形建筑
基坑开挖
coastal cities
irregular building
excavation of foundation pit
作者简介
马乐强(1989-),男,河南洛阳人,中级职称,硕士研究生,研究方向为大型复杂性项目群管理。
