摘要
通过广泛调研分析,系统阐述了输油管道管土相互作用理论模型,归纳了沟埋式管道土压力计算方法;通过系统的参数分析,探明了管土相互作用的主要因素,确定了相应参数在模型中的取值,以此建立三维有限元分析模型。采用该模型对管土相互作用应力进行计算,分析了管顶土体内部应力、管土相互作用土压力及交通荷载作用下土体附加应力。通过与实验对比分析表明:经典理论并不能完全表征管土相互作用模式,有限元在管顶土压力及管周土压力计算值与实测值更为吻合。
Through extensive research and analysis,the author described pipe-soil interaction model,summarizes the buried pipeline trench method of earth pressure;the parameters of the system,the Channel-buried pile-soil interaction,and discovered the main factors that determine the corresponding parameters in the three-dimensional finite element analysis model.Then used this model to calculate the pipe-soil interaction,which analyzed that the top of the soil pipe internal stress、pressure in pipe-soil interaction and the additional stress by traffic loading.By comparison with the experimental analysis which shows that： the classical theory can not fully discover the pile-soil interaction,finite element perform well in earth pressure of top soil and the pipe peritubular.
出处
《公路工程》
2011年第2期164-168,共5页
Highway Engineering
关键词
机场工程
输油管道
力学行为
管土相互作用
airport engineering
oil pipe
mechanical behavior
pipe-soil interaction
