建筑隔震橡胶柔性管道抗震性能试验研究  

EXPERIMENT STUDY ON SEISMIC PERFORMANCE OF RUBBER FLEXIBLE PIPES FOR SEISMICALLY ISOLATED BUILDINGS

作　　者：曾德民 刘文科[1,2] 解琳琳 李爱群 杜志超[4] 陈曦 耿海刚[6] ZENG De-min;LIU Wen-ke;XIE Lin-lin;LI Ai-qun;DU Zhi-chao;CHEN Xi;GENG Hai-gang(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;School of Civil Engineering,Southeast University,Nanjing 210096,China;Beijing Jiangong Architectural Design and Research Institute,Beijing 100044,China;China Beijing Institute of Architectural Design,Beijing 100045,China;Zhongtu International Architectural Design Co.,Ltd,Shijiazhuang,Hebei 050000,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学“工程结构与新材料”北京市高等学校工程研究中心,北京100044 [3]东南大学土木工程学院,南京210096 [4]北京建工建筑设计研究院,北京100044 [5]北京市建筑设计研究院有限公司,北京100045 [6]中土大地国际建筑设计有限公司,河北石家庄050000

出　　处：《工程力学》2020年第6期92-99,共8页Engineering Mechanics

基　　金：北京市自然科学基金项目(8192008);中国地震局工程力学研究所基本科研业务费专项资助项目(2019D17);北京市教委科技一般项目(KM201910016014);长江学者和创新团队发展计划资助项目(IRT_17R06);北京建筑大学研究生创新项目(PG2019029,PG2019033)。

摘　　要：橡胶柔性管道在隔震建筑中逐渐得到应用,其震后能否正常工作会直接影响建筑的使用功能。该文选取竖向安装的橡胶柔性管道作为研究对象,变形位移需求为400 mm,考虑2种公称内径和4种管道设计长度影响,进行了抗震性能试验,对比分析了该类管道的地震损伤演化模式、变形和承载能力特征。试验结果表明:设计长度较小的管道均无法满足预期变形目标,经历管道绷直以及单侧断裂破坏两个关键状态,震后必须更换;对于设计长度符合规范建议的管道,则可以满足变形需求;回归分析获得了管道公称内径和设计长度与其水平变形能力之间的量化关系;管道设计长度相同时,管道公称内径与其破坏时的水平极限荷载呈正相关关系,但大公称内径和小公称内径管道的极限水平荷载之比小于公称内径比。Rubber flexible pipes have been increasingly used in seismically isolated buildings.Whether it could work normally after the earthquake directly affects the function of the building.The vertical rubber flexible pipeline is selected as the research object.Base on the deformation requirement of 400 mm,the seismic performance test is carried out considering the influence of two nominal inner diameters and four different design lengths.The seismic damage evolution model,deformation and bearing capacity characteristics of this type of pipeline are compared and analyzed.The test results indicate that:The pipes with smaller design length cannot meet the expected deformation target.Such pipes experienced two key states:pipe stretching and single-sided fracture.And such pipes must be replaced after the earthquake;For pipes with a design length consistent with the code recommendations,deformation requirements can be met;The quantitative relationship between the nominal inner diameter and design length of the pipeline and its horizontal deformation ability was obtained through regression analysis;For pipes with an identical design length,the nominal inner diameter of the pipeline and the horizontal ultimate load at the time of failure are positively related.Meanwhile the ratio of ultimate load for the pipe with a large and small nominal internal diameter is smaller than the ratio of correspond inner diameter.

关 键 词：隔震 橡胶柔性管道 抗震性能 损伤状态 变形和承载能力 

分 类 号：TU352.12[建筑科学—结构工程]