摘要
为分析隧道形状及埋深对地表沉降的影响,使用FLAC3D研究城市地铁隧道覆跨比和高跨比对地表沉降的影响,得出地铁隧道不同覆跨比和高跨比对地表沉降的影响规律曲线,指出地铁隧道的覆跨比和高跨比均以大于1.0为最佳比值,为城市浅埋地铁隧道的设计提供参考依据。
In order to analyze the influence of the shapes and covers of tunnels on the ground surface settlement, FLAC 3D is used to study the influence of the cover-span ratios and height-span ratios of Metro tunnels on the ground surface settlement and the rule of the influence of different cover-span ratios and height-span ratios of Metro tunnels on the ground surface settlement is obtained. It is proposed that the optimum cover-span ratios and height-span ratios should be more than 1.0. This study results can be served as reference for the design of urban Metro tunnels with shallow covers.
出处
《隧道建设》
2010年第3期242-245,共4页
Tunnel Construction
关键词
地铁隧道
覆跨比
高跨比
地表沉降
Metro tunnel
cover-span ratio
height-span ratio
ground surface settlement
