邻近国铁的地铁深基坑底土体加固宽度优化分析  

Analysis on the Width Reinforcement at the Bottom of Deep Pit near National Railways

作　　者：刘振京[1] 闫周福 张云[1] 宋兴海[1] 薛炳勇[1] 

机构地区：[1]河北工程技术高等专科学校土木工程系,沧州教授061001 [2]深圳市勘察测绘院有限公司,深圳518029

出　　处：《城市轨道交通研究》2011年第4期45-48,共4页Urban Mass Transit

摘　　要：根据实际工程,运用FLAC-3D软件建立了深基坑工程的数值分析模型,就基坑坑底加固措施对基坑本身及其周边环境的影响进行了分析。建议坑底加固区的合理宽度为1倍基坑开挖深度左右,从而在较大程度上控制基坑坑壁的位移。In order to ensure the stability of deep excavation pit and the embankment near national railways, this paper has established a numerical analysis model for deep foundation engineering by FLAC- 3D software, carried out a series of comparison and analysis on the impact of pit bottom reinforcement measures on pit itself and the environment based on the actual engineering, puts forward a reasonable bottom reinforced area which is t time the width of the excavating depth, to control more effectively the excavation pit displacement. This method will have a certain practical significance for deep foundation pit design and distortion control in soft soil area.

关 键 词：深基坑开挖 加固宽度 数值分析 

分 类 号：U231.3[交通运输工程—道路与铁道工程]