摘要
为监测埋地长输管道在冲击荷载作用下的动力响应,制作土箱-管道缩尺模型,将标定好的压电陶瓷传感器粘贴在管道上进行冲击试验。根据压电陶瓷传感器输出的加速度值,得到埋地管道在冲击荷载作用下的动力响应规律,并分析管道壁厚、管径、埋深、冲击高度等参数对管道动力响应的影响。利用有限元分析软件ABAQUS对该过程进行非线性有限元模拟,将有限元分析结果与试验结果进行对比,二者吻合程度较好。结果表明:在冲击荷载作用下,冲击高度增加,管道振动加速度峰值增大;相同工况下,大管径和薄壁管道振动加速度峰值较大,管道覆土越深,管道振动加速度峰值越小;压电陶瓷能够有效监测埋地管道的动力响应,为管道工程抗震设计和安全性评估提供参考依据。
To monitor the dynamic response of buried long-distance pipeline under impact load, a soil box-pipe scale model is made, and the calibrated piezoelectric ceramic sensor is pasted on the pipeline for impact test. According to the acceleration value of piezoelectric ceramic sensor, the dynamic response law of buried pipeline under impact load is obtained, and the influence of pipe wall thickness, pipe diameter, buried depth and impact height on the dynamic response of pipeline is analyzed. The nonlinear finite element simulation of the process is carried out by using the finite element analysis software ABAQUS. The results of the finite element analysis are compared with the experimental results and the results are in good agreement with each other. The results show that the impact load Under the action of load, the peak value of vibration acceleration of pipeline increases with the increase of impact height, and the peak value of vibration acceleration of large diameter and thin-walled pipeline is larger under the same working condition, and the deeper the soil is, the smaller the peak value of vibration acceleration of pipeline is. Piezoelectric ceramics can effectively monitor the dynamic response of buried pipelines and provide a reference for seismic design and safety assessment of pipeline engineering.
作者
田江平
董飞飞
徐晋东
廖恒
杜国锋
TIAN Jiangping;DONG Feifei;XU Jindong;LIAO Heng;DU Guofeng(School of Civil Engineering, Yangtze University, Jingzhou 434023, China)
出处
《地震工程与工程振动》
CSCD
北大核心
2019年第2期159-168,共10页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51778064)
湖北省自然科学基金项目(创新群体)(2016CFA022)
中国石油科技创新基金项目(2016D-5007-0605)~~
关键词
压电陶瓷传感器
冲击荷载
长输管道
动力响应
加速度
piezoelectric ceramic sensor
impact load
long distance pipeline
dynamic response
acceleration
