铁道科学与工程学报2011，Vol.8Issue(1)：67-72,6.
新建隧道盾构下穿施工对既有隧道影响的三维数值模拟
3 -D numerical simulation of influence of undercrossing shield construction on existing tunnel
摘要
Abstract
By means of 3D -FEM, the construction process of undercrossing construction is simulated and the influence of shield tunneling on settlement of the ground surface and displacement and internal forces of the existing tunnel are analyzed. Then, the influence of undercrossing construction on displacement of the existing tunnel under different covering soil condition is studied. The results show that the displacement of the existing tunnel caused by shield tunneling points to the new tunnel, the major of the existing tunnel displacement is longitudinal settlement which is normal distribution, and the normal stress of the existing tunnel have a great change. The thickness of overlay soil, the net distance between the tunnels and the compression modulus of soil have great influence on the interaction between tunnels.关键词
交叉隧道/盾构/下穿/三维有限元分析Key words
undercrossing tunnel/ shield - driven method/ passing through/ 3 D - FEM analysis分类
交通工程引用本文复制引用
房明,刘镇,周翠英,史海欧..新建隧道盾构下穿施工对既有隧道影响的三维数值模拟[J].铁道科学与工程学报,2011,8(1):67-72,6.基金项目
国家高技术研究发展计划项目(863计划)(2007AA11Z112) （863计划）
国家自然科学基金项目(40672194) （40672194）
高等学校博士学科点基金项目(20060558060) （20060558060）
广东省自然科学基金重点项目(06104932) （06104932）
中山大学后备重点课题(1132169) （1132169）
