摘要
该文以宜昌某超高层建筑深基坑为例,通过建立三维有限元模型,研究了不同支护组合条件下支护结构内力和基坑的变形演化规律,结合基坑开挖不同阶段的变形监测数据,提出了基于典型部位支护桩位移与锚内力的多量纲空间模型验证方法,进一步揭示了深基坑开挖过程中不同支护组合内力变化规律以及支护组合结构之间的相互影响。研究成果可对深基坑组合支护设计方案的选择提供依据,对深基坑变形控制技术发展具有重要的工程意义。
Taking the deep foundation pit of a super high-rise building in Yichang as an example,by establishing a three-dimensional finite element model,the internal force of the support structure and the deformation evolution law of the foundation pit under different support combinations are studied in this paper.Combined with the deformation monitoring data of different stages of foundation pit excavation,a multi-dimensional space model verification method based on the displacement of support piles and the internal force of anchors in typical parts is proposed.The law of change of internal force of different support combinations and the interaction of support combination structures in the process of deep foundation pit excavation are further revealed according to the calculation results.The research results can provide a basis for the selection of combined support design schemes for deep foundation pits,which is of great engineering significance for the development of deep foundation pit deformation control technology.
作者
姚志伟
樊振华
游祥
李峰
刘闯
Yao Zhiwei;Fan Zhenhua;You Xiang;Li Feng;Liu Chuang(Baoye Hubei Construction Engineering Group Co.,Ltd.)
出处
《勘察科学技术》
2024年第2期16-20,共5页
Site Investigation Science and Technology
基金
湖北省建设科技计划资助项目(2022044)。
关键词
深基坑
基坑开挖
桩-锚组合
结构相互影响
多量纲模型
deep foundation pit
foundation pit excavation
pile-anchor combination
structural interaction
multi-dimensional model verification
