| 隧道穿越引起地下管线竖向位移的能量变分分析方法 |
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| 引用本文： | 刘晓强,梁发云,张浩,褚峰.隧道穿越引起地下管线竖向位移的能量变分分析方法[J].岩土力学,2014,35(Z2):217-222. |
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| 作者姓名： | 刘晓强 梁发云 张浩 褚峰 |
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| 作者单位： | 1. 同济大学 地下建筑与工程系，上海 200092；2. 上海陆家嘴金融贸易区联合发展有限公司，上海 200127 |
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| 基金项目： | 国家自然科学基金资助项目（No. 50708078）；上海市青年科技启明星计划（No. 12QB1402700）。 |
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| 摘 要： | 隧道穿越引起的地层位移可能造成地下管线变形过大或断裂等事故,引起工程界的高度关注。基于假定的地下管线竖向位移分布模式,通过能量方法建立变分控制方程,提出了求解隧道穿越地下管线竖向位移的能量变分解法,运用叠加原理将单线隧道解答延拓至双线隧道中。与离心机试验和工程实例的对比,验证了方法的正确性。通过参数计算,分析了管材弹性模量、管线埋深、地层损失率等相关因素对地下管线竖向位移的影响规律,研究结论具有工程参考价值。
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| 关 键 词： | 隧道穿越 土体自由位移场 地下管线 竖向位移 能量变分方法 |
| 收稿时间： | 2014-05-30 |
Energy variational solution for settlement of buried pipeline induced by tunneling |
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| LIU Xiao-qiang,LIANG Fa-yun,ZHANG Hao,CHU Feng.Energy variational solution for settlement of buried pipeline induced by tunneling[J].Rock and Soil Mechanics,2014,35(Z2):217-222. |
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| Authors: | LIU Xiao-qiang LIANG Fa-yun ZHANG Hao CHU Feng |
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| Institution: | 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Shanghai Lujiazui Finance and Trade Zone Development Co., Ltd., Shanghai 200127, China |
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| Abstract: | Ground movement induced by tunneling may cause excessive deformation or breakage accident of buried pipelines. Therefore, these problems arouse great concerns of engineers. Based on assumed distribution form of the vertical displacement of buried pipeline, the governing variational equations are established based on the energy method. The energy variational solutions of the vertical displacement of buried pipeline causes by tunneling are obtained accordingly. Using the principle of superposition, further results are extended to solve the twin-track tunnels. The validation of the proposed method is demonstrated through comparison with the centrifuge tests and cases studies. Meanwhile, factors that affect the vertical displacement of buried pipeline are also analyzed. The conclusions can be applied to practical engineering. |
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| Keywords: | tunnel excavation free soil movement buried pipeline vertical displacement energy variational solution |
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