| 地铁隧道覆跨比和高跨比对地表沉降的影响 |
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| 引用本文： | 茅为中,王云龙,张念.地铁隧道覆跨比和高跨比对地表沉降的影响[J].隧道建设,2010,30(3):242-245. |
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| 作者姓名： | 茅为中 王云龙 张念 |
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| 作者单位： | 1. 茅以升科技教育基金会， 北京100029； 2. 北京交通大学， 北京100044 |
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| 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。
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| 关 键 词： | 地铁隧道 覆跨比 高跨比 地表沉降 |
| 收稿时间： | 2009-12-21 |
| 修稿时间： | 2010-05-05 |
Influence of Cover-span ratios and Height-span ratios of Metro Tunnels on Ground Surface Settlement |
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| MAO Weizhong,WANG Yunlong,ZHANG Nian.Influence of Cover-span ratios and Height-span ratios of Metro Tunnels on Ground Surface Settlement[J].Tunnel Construction,2010,30(3):242-245. |
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| Authors: | MAO Weizhong WANG Yunlong ZHANG Nian |
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| Affiliation: | 1. Mao Yisheng Science and Technology Education Foundation, Beijing 100029, China;
2. Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | 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. |
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| Keywords: | Metro tunnel cover span ratio height span ratio ground surface settlement |
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