基于大数据分析的城市地下管线地震安全性分析-华南地震

文章信息/Info

Title:: Seismic Safety Analysis of Urban Underground Pipelines Based on Large Data Analysis

Author(s):: ZHOU Yongbo; (Shandong Zhengyuan Geophysical Information Technology Co.,Ltd.,Jinan 250000,China)

Keywords:: LargedataanalysisUrbanundergroundpipelinesSeismicsafetyanalysisElastic-plasticspringSparsedistributedgridFiniteelementmodeling

摘要:: 针对传统城市地下管线地震安全性分析方法放大拟合性能较差的问题 , 提出一种基于大数据分析的城市地下管线地震安全性分析方法 , 通过有限元分析软件：ANSYS 对城市地下管线实施有限元建模 , 其中地下管线直管部分采用可以改变方向的管道 , 在改变方向处 , 通过弯管对直管进行连接 , 利用构建的城市地下管线有限元模型对城市地下管线进行地震位移响应分析 , 根据地震位移响应分析结果 , 构建地震下的土 - 管互相作用模型 , 基于大数据分析对城市地下管线进行地震安全性分析。为了验证基于大数据分析的城市地下管线地震安全性分析方法的放大拟合性能较强 , 将传统城市地下管线地震安全性分析方法与该方法进行对比,实验结果证明该方法的放大拟合性能优于传统方法,说明该方法更适用于城市地下管线地震安全性分析。

Abstract:: Aiming at the problem of poor amplification and fitting performance of traditional seismic safety analysis methods for urban underground pipelines, a seismic safety analysis method for urban underground pipelines based on large-scale data analysis is proposed. The finite element model of urban underground pipelines is established by ANSYS, in which the underground pipelines directly adopt pipelines that can change direction. At the same time, the seismic displacement response of urban underground pipelines is analyzed by using the finite element model of urban underground pipelines. According to the results of seismic displacement response analysis, the soil-pipe interaction model under earthquake is constructed, and the seismic safety of urban underground pipelines is analyzed based on large data analysis. In order to verify the strong magnification and fitting performance of the seismic safety analysis method for urban underground pipelines based on large data analysis, the traditional seismic safety analysis method for urban underground pipelines is compared with this method. The experimental results show that the magnification and fitting performance of the method is better than the traditional method, which shows that the method is more suitable for seismic safety analysis of urban underground pipelines.