CAJ | 학술논문

基于某工业地下管道建立有限元模型，考虑管土相互作用和行波效应，综合分析在三向地震动一致激励与非一致激励下的管道动力响应结果，并且简单分析部分相关因素对管道动力响应结果的影响。结论如下：对于地下管道来说，非一致激励与一致激励作用下的位移响应曲线在峰值和形状方面存在较为明显的不同，具体表现为：非一致作用水平向位移远大于一致作用，而竖直向位移稍大于一致作用；对于应力响应，不管一致还是非一致激励，同一截面各处的应力响应有明显不同，并且总体来说非一致作用下较大；位于管道走向变化段、土层变化处和管道弯曲段的截面的位移响应峰值和应力响应一般会产生突变，说明这些因素对管道的动力响应具有较为明显的影响。
기우모공업지하관도건립유한원모형，고필관토상호작용화행파효응，종합분석재삼향지진동일치격려여비일치격려하적관도동력향응결과，병차간단분석부분상관인소대관도동력향응결과적영향。결론여하：대우지하관도래설，비일치격려여일치격려작용하적위이향응곡선재봉치화형상방면존재교위명현적불동，구체표현위：비일치작용수평향위이원대우일치작용，이수직향위이초대우일치작용；대우응력향응，불관일치환시비일치격려，동일절면각처적응력향응유명현불동，병차총체래설비일치작용하교대；위우관도주향변화단、토층변화처화관도만곡단적절면적위이향응봉치화응력향응일반회산생돌변，설명저사인소대관도적동력향응구유교위명현적영향。
Based on one industrial underground pipeline,with soil-pipe interaction and traveling wave effect taken into consideration,a finite element model was built to study the dynamic re-sponse of pipelines under uniform and non-uniform excitation,and the influence of some relative factors was analyzed.The results are:the peak value of the displacement response curve under non-uniform excitation,as well as shape,differs from that under uniform excitation.Horizontal displacement under non-uniform excitation is apparently greater than that under uniform excita-tion,while vertical displacement under non-uniform excitation is slightly greater than that under uniform excitation.The stress response of one monitor point differs from that of other points on the same section under both uniform and non-uniform excitation,and the stress response under non-uniform excitation is more intense compared to that under uniform excitation.Displacement and stress of a pipeline in the subsurface is usually influenced by the change in soil properties and pipe trend and bucking under seismic excitation.