数值模拟方法在地铁抽水试验中的应用

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摘要研究目的：抽水沉降是由于地壳表层土体压缩而导致区域性地面标高降低或损失的一种环境地质现象。作为世界各国日趋严重的主要地质灾害之一,如何在室内真实模拟现场抽水沉降,以及不同土体抽水沉降之间的内在关系的研究,具有十分重要的理论意义和工程应用价值。

研究结论：结合南京地铁工程实际工况,采用三维有限元软件ADINA进行建模分析,得出了该工程抽水沉降的模拟结果,结论与现场抽水和室内实验所得结果基本吻合,为抽水引发沉降预测提供了科学的数值依据和较为精确的预测。

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	陈广峰
	陈惠芳
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	李利侠

关键词 ： ADINA8. 3, 数值模拟, 现场抽水试验, 室内失水试验, 土层沉降

Abstract：Research purposes: Pumping settlement is a kind of environmental and geological phenomena that causes lowering and loosing the elevation of the regional surface due to compression of the soil of crust surface and it is one of increasingly serious major geological disasters in the world．How to do the indoor simulation of the field pumping settlement and doing the study on the intemal relation between the pumping settlements of different soils have all important theoretical meaning and applicable value in engineering．

Research conclusions: According to the real engineering conditions of Nanjing metro，the three—dimensional finite element software ADINA was used for simulation analysis and the simulation result of the pumping settlement of this engineering project was obtained．The simulation result basically tallied with the results of the field pumping and the indoor experiment．So application of the numerical simulation can provide the scientific numerical data for prediction of pumping settlement．

Key words： ADINA8．3 numerical simulation field pumping test indoor water loss test soil settlement

收稿日期: 2010-03-16

PACS:

U231

作者简介: 陈广峰, 1971年出生,男,助理研究员,清华大学城市规划设计研究院环境岩土与地下空间研究所所长。

引用本文:

陈广峰，陈惠芳，赵蓉，夏世龙，李利侠. 数值模拟方法在地铁抽水试验中的应用[J]. 铁道工程学报, 2010, 27(7): 77-82.
CHEN Guang—feng，CHEN Hui—fang，ZHAO Rong，XIA Shi—long，LI Li—xia. Application of Numerical Simulation in Pumping Tests for Metro. 铁道工程学报, 2010, 27(7): 77-82.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2010/V27/I7/77

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