锈蚀对承插式接头管道震害预测结果影响的分析  

Analysis on the effect of corrosion on the impact of seismic damage prediction of socket and spigot joint pipe

作　　者：孙士华[1] 卢韬[2] 王心义[1] 

机构地区：[1]河南理工大学资环学院,河南焦作454000 [2]防灾科技学院,河北廊坊065201

出　　处：《供水技术》2012年第1期46-49,共4页Water Technology

基　　金：国家自然科学基金重点资助项目(40638040);国家自然科学基金资助项目(40972164);"十一五"国家科技支撑计划重点项目(2007BAK24B04)

摘　　要：介绍了地下管道震害分析的方法、管道锈蚀作用的原因及危害,并从数值分析的角度出发,分析了震害预测中埋深、壁厚、水压力等参数变化对预测结果的影响。结果表明,管道的组合轴向变形与管长和水内压呈线性正相关,与管道埋深呈线性负相关;地下管道的锈蚀作用使管道壁厚变小,地震发生时更易遭到破坏,需要采取相应的措施减小管道锈蚀带来的震害影响。The analysis method of seismic damage for underground pipeline, reasons of pipe corrosion and harmfulness were introduced, and the influencing factors of depth, wall thickness, water pressure on the result of prediction were analyzed from point of view of numerical analysis. The result showed that the combined axial deformation presented linear positive correlative property with length and internal water pressure, and presented linear negative correlation with depth. Wall thickness became thin due to pipe corrosion and the pipeline was easily damaged in the earthquake, therefore measures should be taken to reduce seismic damage of pipe corrosion

关 键 词：锈蚀作用 抗震分析 可靠性分析 震害预测 组合拉伸 

分 类 号：TU991.38[建筑科学—市政工程]