基于ADNIA的基坑渗流有限元分析  

The Finite Element Analysis of Foundation Seepage Based on ADNIA

作　　者：张冬冬[1] 孙瑞瑞 袁新明[3] 王刚[4] 

机构地区：[1]上海交通大学船建学院安全与防灾工程研究所,上海200240 [2]上海市地矿工程勘察院,上海200072 [3]扬州大学水利科学与工程学院,江苏扬州225009 [4]山东农业大学水利土木工程学院,山东泰安271000

出　　处：《水利与建筑工程学报》2016年第4期21-24,共4页Journal of Water Resources and Architectural Engineering

摘　　要：基坑工程许多事故是地下水引起的,船坞基坑中常采用防渗设施来减小地下水的危害,而对渗流规律的分析研究尚未明确。为了进一步研究基坑防渗设施对渗流场的影响,应用温度场数学模型来模拟渗流计算,通过ADINA-T进行渗流模拟,得到不同工况下船坞基坑典型断面的渗透水头及坡降的分布变化规律,防渗设施对渗透水头和压力均有明显的下降作用,形成了较大的渗径长度,有效的缩小了渗透坡降,分析研究结果有利于进一步认识基坑在防渗设施下的渗流规律,为基坑渗流和防渗设施的研究提供理论依据。Deep excavation is often affected by groundwater that results in many accidents. Seepage control facilities were adopted in dry dock foundation to reduce the harm of groundwater seepage,yet the seepage law is not yet clear. In order to further study the effect of foundation seepage prevention facilities of seepage field and temperature field mathematical model to simulate the seepage,a three-dimensional mathematical model was developed by using ADNIA- T,which could provide us the distribution of seepage head and grade on typical section under different working condition. The results indicate that arrangement of anti-seepage dock has increased the seepage path length,reduced the seepage slope,and prevented the occurrence of piping and flow soil. This research is helpful to further recognize the seepage law of foundation pit under seepage control facilities,and could provide the reliable theory basis for foundation pit seepage and facilities design.

关 键 词：三维水动力 船坞基坑 渗透水头 防渗设置 渗流控制 

分 类 号：TU44[建筑科学—岩土工程]