| 天津地铁既有线改造工程中的控制差异沉降研究 |
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| 引用本文： | 郑刚,裴颖洁.天津地铁既有线改造工程中的控制差异沉降研究[J].岩土力学,2007,28(4):728-732. |
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| 作者姓名： | 郑刚 裴颖洁 |
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| 作者单位： | 天津大学建筑工程学院,天津,300072 |
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| 摘 要： | 天津地铁一号线改造工程是在原有地铁线路的基础上对车站和部分隧道进行重建，为了列车的运行安全，必须严格控制新旧隧道结构交接处的差异沉降。通过有限元数值分析，对所要采用的高压旋喷加固地基方案进行数值模拟，确定了加固方式和厚度。现场实测结果表明，此次数值模拟是符合实际的，所选取的方案是经济合理的。
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| 关 键 词： | 差异沉降 高压旋喷桩 地基加固 数值分析 有限元 现场实测 |
| 文章编号： | 1000-7598-（2007）04-0728-05 |
| 收稿时间： | 2005-05-25 |
| 修稿时间： | 2005-05-25 |
Numerical analysis of means for reducing differential settlements of primary subway's modification work in Tianjin |
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| ZHENG Gang,PEI Ying-jie.Numerical analysis of means for reducing differential settlements of primary subway''''s modification work in Tianjin[J].Rock and Soil Mechanics,2007,28(4):728-732. |
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| Authors: | ZHENG Gang PEI Ying-jie |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The modification work of the subway #1 in Tianjin is the project reconstructed the stations and some tubes on the base of primary subway. The differential settlement at the juncture of new and old tubes must be controlled strictly for the sake of safety The technique of high-pressure chemical churning piles is employed to consolidate the foundation. The consolidating means and thickness are determined by the result of FEM; by contrast to the measured data in-situ, the result of numerical calculation is testified to be proper and the design proposal is rational accordingly. |
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| Keywords: | differential settlement high-pressure chemical churning pile foundation improvement numerical analysis finite element method in-situ measurement |
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