华东交通大学学报Issue(1)：9-15,7.
类矩形土压平衡盾构掘进引起的地层变形三维数值分析
Three-dimensional Numerical Analysis of Ground Deformation Induced by Quasi Rectangle EPB Shield Tunneling
汤继新 1王柳善 2季昌 2寇晓勇3
作者信息
- 1. 宁波市轨道交通集团有限公司，浙江 宁波 315101
- 2. 同济大学道路与交通工程教育部重点实验室，上海 201804
- 3. 上海隧道工程有限公司，上海 200232
- 折叠
摘要
Abstract
Taking the first project of quasi rectangle subway shield tunnel as the research background, this paper adopted three-dimensional finite element software ABAQUS to build 3D simulation model, which included the shield machine, segment and grouting layer. The step-by-step construction process of the quasi rectangle tunnel advance was simulated and calculated to analyze the ground deformation induced by the quasi rectangle shield tunneling under the condition of middle burial. The parameters of influence including face pressure and grouting material properties on ground surface deformation were studied. Results indicated that the curve of the surface subsidence induced by quasi rectangle shield tunneling was similar to Peck curve and the width of surface sub-sidence was about 30 m, while the layered settlement had the shape of the letter W. The maximum horizontal soil displacement induced by shield tunneling was 6.1mm at the point about 3.5 m away from the edge of tunnel. In-creasing the face pressure and selecting synchronous grouting materials with short initial setting time and high initial setting modulus was helpful to control the ground deformation.关键词
类矩形盾构/数值模拟/地层变形/参数分析Key words
quasi rectangle shield/numerical simulation/ground deformation/parameter studies分类
交通工程引用本文复制引用
汤继新,王柳善,季昌,寇晓勇..类矩形土压平衡盾构掘进引起的地层变形三维数值分析[J].华东交通大学学报,2016,(1):9-15,7.
