数值模拟方法在地铁抽水试验中的应用  

Application of Numerical Simulation in Pumping Tests for Metro

作　　者：陈广峰[1] 陈惠芳[2] 赵蓉[3] 夏世龙[4] 李利侠[4] 

机构地区：[1]清华大学,北京100084 [2]中国矿业大学,江苏徐州221116 [3]北京建筑工程学院,北京100044 [4]中铁建工集团有限公司,北京100070

出　　处：《铁道工程学报》2010年第7期77-82,共6页Journal of Railway Engineering Society

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。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 internal relation between the pumping settlements of different soils have an 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.

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 

分 类 号：U231[交通运输工程—道路与铁道工程]