中南大学学报（自然科学版）2012，Vol.43Issue(1)：308-314,7.
隧道穿越方式对地表建筑物变形影响的数值分析
Numerical analysis of deformation influence of tunnel crossing types on ground building
摘要
Abstract
Based on the project of a metro tunnel passing through ground building, a 3D elastic-plastic computational model was established. Numerical calculation of different conditions of tunnel crossing angle and eccentricity ratio were carried out, and the regularities distribution of the building foundation settlement and the structure deformation was analyzed. The results show that foundation deformation process and distribution are obviously different when the tunnel passes through the building with different crossing types and eccentricity ratios. With the decrease of crossing angle, the settlement of foundation rises by 37.3% at most, and the surface settlement of foundation changes from symmetrical distribution to lateral tilt, and the differential settlement of adjacent plinth increases obviously. Tilt displacements of building increase significantly at different crossing angles, and it can rise 10 times at most. With the increase of eccentricity ratio, the settlement of one side foundation rises 1.64 times, and the other side declines 1.24 times. The surface settlement of foundation changes from symmetrical distribution to lateral tilt, and the transverse differential settlement of adjacent plinth remains the same, while the longitudinal differential settlement increases obviously. The most unfavorable condition appears in the eccentricity ratio of 0.8. The influence of lateral tilt of the building is greater than vertical tilt with the change of eccentricity ratio.关键词
隧道/地表建筑/有限元法/数值分析/变形Key words
tunnel/ ground building/ finite element method/ numerical analysis/ deformation分类
建筑与水利引用本文复制引用
彭立敏,丁祖德,黄娟,雷明锋,孙欢欢..隧道穿越方式对地表建筑物变形影响的数值分析[J].中南大学学报（自然科学版）,2012,43(1):308-314,7.基金项目
铁道部科技研究开发计划项目(2005K002-D-3) （2005K002-D-3）
湖南省研究生创新基金资助项目(CX2010B094) （CX2010B094）
