摘要
基于ABAQUS软件平台进行了地下管线-土体动力相互作用的有限元建模与分析。模型中采用粘弹性人工边界来模拟无限域介质对计算区域的影响,利用等效荷载波动输入方法来实现斜入射地震波作用下人工边界上的波动输入,采用主从接触面单元来模拟管线-土体之间的动力相互作用。在此基础上对地下管线进行了计算分析,并研究了斜入射角度、地震波峰值、管径、埋深和接触面摩擦系数等多方面因素对地下管线地震反应的影响。
Numerical modeling and analysis of underground pipeline-soil dynamic interaction have been carried out using ABAQUS as a platform. Visco-elastic artificial boundary is used to simulate the effect of infinite field. Equivalent load wave motion input method is applied to realizing the wave input for obliquely incident seismic waves. The master-slave contact model is used to simulate the dynamic interaction between underground pipeline and soil. Based on the above study, the seismic responses of underground pipeline are studied, and the multiple factors such as obliquely incident angle, peak value of earthquake wave, pipeline diameter, embedded depth and frictional factor are investigated.
出处
《华中科技大学学报（城市科学版）》
CAS
2008年第4期283-286,共4页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金(50621062)
关键词
斜入射
地下管线
有限元法
地震反应分析
obliquely incident seismic wave
underground pipeline
finite element method
seismic response analysis
