深基坑咬合桩+锚索结构内力及变形分析  

ANALYSIS OF INTERNAL FORCES AND DEFORMATIONS IN DEEP EXCAVATION WITH INTERLOCKING PILE AND ANCHOR CABLE SUPPORT STRUCTURE

作　　者：王学明 WANG Xueming(Gansu Jianzong Real Estate Development Co.,Ltd.,Lanzhou 730050,China)

机构地区：[1]甘肃建总置业发展有限公司,兰州730050

出　　处：《低温建筑技术》2025年第1期114-117,共4页Low Temperature Architecture Technology

摘　　要：为研究基坑开挖深度对深基坑位移与内力分布的影响,并分析预应力锚索支护结构对基坑稳定性的作用,文中通过理论分析与现场监测相结合的方法进行了深入研究。研究结果表明,基坑开挖深度的增加导致基坑内最大弯矩增大,并向下偏移。预应力锚索能够有效控制基坑侧向位移,显著减小基坑变形。支护桩的变形与桩体深度及其埋置位置密切相关,桩深的变化对桩体变形有显著影响。此外,基坑顶部水平位移呈现中间区域位移较大,两端位移较小的规律。研究成果为深基坑支护系统的优化设计与安全评估提供了重要理论依据和工程参考。Combining theoretical analysis and field monitoring,this paper studies the impact of excavation depth on the displacement and internal force distribution of deep foundation pits and analyzes the role of prestressed anchor cables in supporting the stability of the pit.The results show that as the excavation depth increases,the maximum bending moment inside the pit increases and shifts downward.Prestressed anchor cables can effectively control later⁃al displacement of the foundation pit,significantly reducing its deformation.The deformation of the supporting piles is closely related to the pile depth and its embedment position,with changes in pile depth significantly affecting the pile deformation.Additionally,the horizontal displacement at the top of the foundation pit follows a pattern where the middle region has larger displacements,and the displacements at both ends are smaller.The findings may pro⁃vide important theoretical support and engineering references for the optimization design and safety evaluation of deep foundation pit support systems.

关 键 词：深基坑 咬合桩+预应力锚索 支护结构 

分 类 号：TU753[建筑科学—建筑技术科学]