| 双圆盾构隧道施工引起的地面沉降预测 |
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| 引用本文： | 魏纲,陈伟军,魏新江.双圆盾构隧道施工引起的地面沉降预测[J].岩土力学,2011,32(4):991-0996. |
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| 作者姓名： | 魏纲 陈伟军 魏新江 |
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| 作者单位： | 1. 浙江大学城市学院,杭州,310015
2. 浙江大学城市学院,杭州,310015;浙江大学,岩土工程研究所,杭州,310058 |
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| 基金项目： | 国家自然科学基金资助，浙江省自然科学基金资助项目，杭州市重点学科资助 |
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| 摘 要： | 将随机介质理论应用于双圆盾构隧道施工引起的地面沉降计算,假定开挖后土体移动模式为不均匀收敛,推导了土体损失引起的地面沉降计算公式。算例分析结果表明:预测结果与实测值比较吻合;双圆叠加模型计算结果明显偏大,原因是没有考虑双圆盾构重叠部分减少的土体开挖面积,仍按两个单圆的土体开挖面积来计算,导致土体损失量比实际大;将双圆叠加模型计算结果按实际土体开挖面积相应折减,发现其计算结果仍比实测值大,表明双圆盾构隧道不能简单地采用两个单圆叠加得到。对双圆叠加模型进行修正,提出修正系数取值,修正后的双圆叠加模型计算值与实测值较吻合。
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| 关 键 词： | 双圆盾构 隧道 地面沉降 随机介质理论 |
| 收稿时间： | 2010-01-13 |
Prediction of surface settlement induced by double-o-tube shield tunnel excavation |
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| WEI Gang,CHEN Wei-jun,WEI Xin-jiang.Prediction of surface settlement induced by double-o-tube shield tunnel excavation[J].Rock and Soil Mechanics,2011,32(4):991-0996. |
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| Authors: | WEI Gang CHEN Wei-jun WEI Xin-jiang |
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| Institution: | 1. City College Zhejiang University, Hangzhou 310015, China; 2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | Stochastic medium theory is first applied to calculate the surface settlement induced by double-o-tube shield tunneling construction.Assuming the soil movement after excavation is non-uniform convergence mode,the calculation formula for surface settlement induced by ground loss is deduced with stochastic medium theory.As shown in analytical calculation,the predicted surface settlements are in good agreement with the observed settlements.The results of double circle overlay model method are obviously bigger ... |
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| Keywords: | double-o-tube shield tunnel surface settlement stochastic medium theory |
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