文章摘要
薛景宏,王鑫.地震动多点差异输入对架空管道地震响应影响研究[J].地震工程学报,2019,41(6):1426-1431. XUE Jinghong,WANG Xin.Effect of Multi-support Differential Ground Motion Input on Seismic Response of Overhead Pipelines[J].China Earthquake Engineering Journal,2019,41(6):1426-1431.
地震动多点差异输入对架空管道地震响应影响研究
Effect of Multi-support Differential Ground Motion Input on Seismic Response of Overhead Pipelines
投稿时间:2019-08-09  
DOI:10.3969/j.issn.1000-0844.2019.06.1426
中文关键词: 架空管道;相干效应;多点差异输入;地震响应
英文关键词: overhead pipeline;coherence effect;multi-support differential input;seismic response
基金项目:国家自然科学基金面上项目(51178087);黑龙江省教育厅科研专项(2016YSFX-02);中国石油科技风险创新基金(07-06D-01-04-05-03)
作者单位
薛景宏 东北石油大学 土木建筑工程学院, 黑龙江 大庆 163318
黑龙江省防灾减灾及防护工程重点实验室, 黑龙江 大庆 163318 
王鑫 东北石油大学 土木建筑工程学院, 黑龙江 大庆 163318
大庆油田有限责任公司第三采油厂, 黑龙江 大庆 163000 
摘要点击次数: 124
全文下载次数: 85
中文摘要:
      架空管道由于地震波传递、地震动衰减以及场地不均匀产生各支撑点地震动差异,为了研究这种差异对架空管道地震响应的影响,通过有限元软件ADINA建立架空管道有限元模型,利用MATLAB软件编写具有相干效应的人工地震波,计算分析了多点地震动相干函数法输入、行波输入与一致输入下地震响应。结果表明:①随着视波速的增加管道轴向应变变小,有接近一致激励情况的趋势;②同一相干函数模型,考虑和忽略场地效应,管道轴向应变最大值存在差异;不同相干函数模型,管道轴向应变最大值也存在差异。结论认为,如果场地比较均匀且管段较短,可采用行波法进行地震输入;长柔管道应采用相干法进行地震响应分析,场地不均匀的长柔管道,应同时考虑场地效应。
英文摘要:
      Overhead pipeline is a typical, long-flexible structure. Ground motions of different support are distinct due to the seismic wave propagation, seismic wave attenuation, and soil nonuniformity. To analyze the effect of differential inputs on the seismic response of overhead pipelines, seismic responses under coherence function input, traveling wave input, and uniform input were simulated and compared. An overhead pipeline model was established using the finite element software Automatic Dynamic Incremental Nonlinear Analysis (ADINA), and artificial seismic waves with coherence effects were compiled by MATLAB. Results showed that:(1) As the apparent wave velocity increased, the axial strain of the pipe decreased, which was close to the case of a consistent excitation; (2) maximum axial strain of pipelines having the same coherence function model was different with and without the consideration of site effect; and (3) for different coherence function models, the maximum axial strain of the pipeline was also distinct. It is concluded that if the site is uniform and the pipeline is short, the traveling wave method can be used for seismic input, the coherence method should be used for seismic response analysis of long flexible pipelines, and the site effect should be considered simultaneously for long flexible pipelines over an uneven site.
查看全文   查看/发表评论  下载PDF阅读器
关闭

您是第2777869位访问者
版权所有欢迎《地震工程学报》编辑部
主管单位:中国地震局 主办单位:中国地震局兰州地震研究所
清华大学
中国地震学会
中国土木工程学会
地  址: 甘肃省兰州市东岗西路450号 邮编:730000 电话:0931-8275892 E-mail: dzgcxb@gsdzj.gov.cn
本系统由北京勤云科技发展有限公司设计