【摘要】 管土相互作用是影响埋地管道抗震性能的关键因素之一,分析管土相互作用是城市地下管道建设中面临的突出问题。在应用ADINA软件实现地下管道与土体融合有限元建模的基础上,通过定义管土接触来设定管土相互作用;介绍了管土接触设定、地震荷载加载时间函数、模型参数选择与求解步骤,并依据所建模型计算了埋地管道的变形和应力分布。根据计算结果,分析了管土相互作用对埋地管道抗震性能的影响,并给出了几点工程建议。更多还原

【Abstract】 Pipe-soil interaction is one of the primary factors in earthquake resistance of buried pipeline,and the analysis of pipe-soil interaction is the key of underground pipeline construction.On the basis of finite element modeling,pipe-soil contact is simulated by Boolean Body Operators,and pipe-soil interaction is defined by the pipe-soil Contact Control Operators in ADINA.Pipe-soil contact definition,time function of earthquake load,model preferences and solution are introduced.The distribution of displacement and stress on buried pipeline is calculated.Influence of pipe-soil interaction on earthquake resistance of buried pipeline is investigated based on the results of numerical simulation.Finally,some advice for earthquake lifeline engineering is proposed.更多还原