摘要
针对穿黄隧道盾构双衬砌结构特点,采用MARC软件进行考虑接触问题的平面非线性有限元法计算分析。计算中模拟了3重接触:外衬与地基抗力单元之间的接触;外衬管片间的接触;内衬和外衬之间的接触。同时模拟了内、外衬施工过程和荷载施加过程,得出了衬砌结构变形的基本规律和结构细部应力特征,为盾构法隧道的衬砌设计提供参考。
According to the characteristics of double lined shield tunnel of Yellow?River?crossing works,two?dimension nonlinear FEM analysis with MARC was performed considering three contact problems,i.e., contact between the outer lining and reaction unit of the base, contact between the assembled pieces of outer lining and contact between inner and outer linings. The construction process and exerting process of the loads were simulated. The basic regularity of deformation and the features of detailed stresses were obtaind.
出处
《长江科学院院报》
CSCD
北大核心
2002年第B09期61-63,67,共4页
Journal of Changjiang River Scientific Research Institute
关键词
穿黄隧道
双层衬砌结构
接触问题
有限元
Yellow-River-crossing tunnel
double linings
contact problem
FEM
