摘要
基于ABAQUS通用有限元软件平台,利用黏弹性人工边界实现无限域的有限化,采用摩尔-库伦模型考虑土体的非线性,建立了埋地管道的数值仿真模型。首先,论文讨论了土-管相互作用参数对管道应变的影响,建议了数值仿真分析中接触面摩擦系数的合理取值;其次,通过与埋地管道振动台试验结果的对比,验证了埋地管道振动台试验中模型边界处理的有效性,进而讨论了埋地管道模型试验中的相似律问题;最后,进行了管道应变响应分析,并简单分析了类河谷地层埋地管道的应变响应。通过本文的研究,获得了埋地管道地震响应的一些规律性成果,为更深一步的研究奠定了基础。
Based on the finite element software of ABAQUS,a numerical simulation model for seismic response of a buried pipeline was determined,where the viscous-spring artificial boundary was used to simulate the boundary condition of the calculation area,and the Mohr-Coulomb model was employed to consider the nonlinearity of the deposit soil. Firstly,the parameter of the SSI is studied; we found that the numerical simulation was good when the contact pair with friction coefficient equals 0. 3 to 0. 6. Secondly,the simulation results were compared with the test results of buried pipeline in shaking table test,which indicated that the boundary of the model in shaking table test was reasonable. At the same time,some similarity laws in shaking table test were discussed. Finally,the seismic response of a pipeline-soil system was studied,and the influence of the river valley stratum on the strain response of buried pipeline was also analyzed briefly.
出处
《地震工程与工程振动》
CSCD
北大核心
2015年第6期106-113,共8页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目(51278017
51215301)
国家"973"计划项目(2011CB01300)~~
关键词
埋地管道
数值仿真
地震响应
振动台试验
buried pipeline
numerical simulation
seismic response
shaking table test
