摘要
为提高双线顶管隧道施工中对管土相互作用模拟的准确性,提出了一种基于位移控制的动态仿真方法,克服了传统刚度迁移法在处理管土接触滑移变形时的局限性,更加真实地模拟了顶管施工过程中的动态行为。通过ABAQUS平台构建仿真模型,重点分析了施工过程中地层变形与管片受力的动态变化。研究结果表明:基于位移控制的动态仿真法在预测地表沉降方面与理论计算吻合良好。顶管施工过程中,管道与周围土体的相互作用导致地表沉降、土体位移,管片应力表现出明显的动态波动特征。提出的数值仿真方法可为优化顶管施工设计、预测顶管施工引起的地层变形及管片内力等提供帮助。
To improve the accuracy of pipe-soil interaction simulation in dual-line pipe jacking tunnel construction,this study proposes a displacement-controlled dynamic simulation method.This method overcomes the limitations of the traditional stiffness transfer method in handling pipe-soil contact slip deformation,providing a more realistic simulation of the dynamic behavior during the pipe jacking process.A simulation model was developed on the ABAQUS platform,focusing on the dynamic variations in ground deformation and pipe segment stresses during construction.The results indicate that the displacement-controlled dynamic simulation method exhibits good agreement with theoretical calculations in predicting surface settlement.During the pipe jacking process,the interaction between the pipe and the surrounding soil induces dynamic changes in surface settlement and soil displacement,while the pipe segment stresses display distinct dynamic fluctuations.The proposed numerical simulation method provides valuable insights for optimizing pipe jacking design,predicting soil deformation induced by pipe jacking,and analyzing internal forces in pipe segments.
作者
姜雪峰
JIANG Xuefeng(China Railway 18th Bureau Group 2nd Engineering Co.,Ltd.,Tangshan 064000,China)
出处
《国防交通工程与技术》
2025年第2期6-10,共5页
Traffic Engineering and Technology for National Defence
关键词
顶管施工
数值仿真
动态模拟
位移控制法
刚度迁移法
管土界面接触
pipe jacking construction
numerical simulation
dynamic modeling
displacement-controlled method
stiffness transfer method
pipe-soil interaction
