建筑输液管道地震反应分析  

Seismic response analysis of liquid pipes in building

作　　者：郝润霞[1] 袁鹏程 Hao Runxia;Yuan Pengcheng(Civil Engineening School,Inner Mongolia University of Science&Technology,014010,Baotou,China)

机构地区：[1]内蒙古科技大学土木工程学院,包头014010

出　　处：《应用力学学报》2020年第5期2120-2126,I0020,共8页Chinese Journal of Applied Mechanics

基　　金：包头市科技计划项目(2019C3003-1-6);大连理工大学海岸和近海工程国家重点实验室开放基金项目(LP1807)。

摘　　要：建筑物内输液管道作为依附在各楼层的非结构构件,对保障建筑物正常使用具有重要意义。基于主体结构各楼层对管道的二次输入影响,分别分析了管道与建筑结构耦合和管道多点激励下的地震反应,通过比较两个模型的计算结果,研究管道地震反应的实用分析方法。通过对主体结构弹塑性时程分析,得到楼层加速度放大系数变化规律,并建立楼面反应谱分析楼层反应谱相对地面反应谱的放大效应以及楼层对管道的地震作用。利用多点激励分析方法分析了主体结构类型及管径对管道应力的影响,结果表明:地震作用下管道的最大应力发生在与楼层连接处,2层、3层为管道薄弱层;侧向刚度较大的框架-剪力墙结构中的管道应力值较框架结构管道应力偏小;管径为150mm的管道应力约为管径为25mm管道的6倍。The liquid pipes in the building are used as non-structural members attached to each floor, which is of great significance for ensuring the normal use of buildings. Based on the influence of each floor of the main structure on the pipelines, the main structure-pipe coupling model and the pipeline multi-point excitation model are established to analyze the seismic responses of the pipelines, the results of the two are compared and a multi-point excitation pipeline seismic response analysis method is proposed. Based on the elastic-plastic time history analysis of the main structure, the variation law of the floor acceleration amplification factor is obtained, and the floor response spectrum is established to analyze the amplification effect of the floor response spectrum relative to the ground response spectrum and the seismic effects of the floor on the pipelines. Finally, the influences of main structure type and pipe diameter on the internal force response of pipeline are analyzed by multi-point excitation analysis method. The results show that the maximum internal force of pipeline occurs at the connection with floor, the second and third layers are weak layers of pipelines, and the internal force of pipeline in frame-shear wall structure with larger lateral stiffness is smaller than that of frame structure, the stress of pipe with diameter of 150 mm is about 6 times of that of 25 mm.

关 键 词：非结构构件 输液管道 多点激励 楼层反应谱 内力反应 

分 类 号：TU352[建筑科学—结构工程]