地震作用下综合管廊内管道动力响应试验研究  

Experimental study on the dynamic responses of pipes inside a utility tunnel under seismic action

作　　者：黄德龙 宗钟凌 黄子渊 汤爱平[2] HUANG Delong;ZONG Zhongling;HUANG Ziyuan;TANG Aiping(School of Civil and Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]江苏海洋大学土木与港海工程学院,江苏连云港222005 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《振动与冲击》2023年第18期250-258,294,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金委面上项目(41672287,51778197);海南省重点研发计划(ZDYF2022SHFZ089);江苏省重点研发计划(BE2021681)。

摘　　要：在地震作用下,虽然埋地综合管廊可以有效保护其内部管道,但是往往因为管道的支座设计不合理,而造成管廊内部管道发生较大变形。针对地下综合管廊内部管道地震响应问题,设计管廊及其内部管道试验模型,敷设相应传感器,并置于剪切箱内进行振动台加载。首先研究了管廊内部管道加速度响应,得出了管道的加速度峰值响应衰减效应和传至管道能量的衰减规律。然后对管道与管廊纵向和横向相对滑移以及管道支座形式、管道材质等对管道变形的影响进行了研究,发现传至管廊内部管道的能量衰减程度基本都在80%以上;若输入加速度较大段对应的持时较长,则其所带来管道纵向相对滑移一般较大;侧壁角钢支架对管道的隔振效果要强于混凝土墩支座,而将管道直接置于管槽的抗震效果最差。通过该文结论,不仅可为管廊内部管道抗震设计提供依据,还可以在地震发生后快速判断内部管道伤损情况,有利于震后救援的开展。During an earthquake,although internal pipes could be protected by an external utility tunnel,they are often damaged due to an unreasonable design of pipe supports.In the study,aiming at analysing the seismic responses of the internal pipes inside the utility tunnel,the test model of the utility tunnel as well as the internal pipes was designed,the corresponding sensors were installed.The utility tunnel model was placed in a shear box on the shaking table and loaded with the seismic waves.The acceleration responses of the internal pipes were investigated,and the attenuation of peak acceleration responses and the energy transmitted to pipes were expounded.The effects of longitudinal and transverse slippages of the pipes and the tunnel,the form of pipe supports and the material of the pipes on the deformation of the pipes were then investigated.It is found that the degree of energy attenuation transmitted to the pipes inside the utility tunnel is basically above 80%.If the input seismic with large acceleration lasts longer,the longitudinal relative slippage of the pipe is generally larger.The vibration isolation effect of the angle steel support on the tunnel side wall is stronger than that of the concrete pier support,and the anti-seismic effect of placing the pipe directly in the pipe groove is worst.The conclusions not only provide a basis for the seismic design of internal pipes inside the utility tunnel,but also can be used to quickly judge the damage of internal pipes after an earthquake,which is beneficial to the development of post-earthquake rescue.

关 键 词：综合管廊 内部管道 振动台试验 相对滑移 管道支座 隔振 

分 类 号：TU352[建筑科学—结构工程]