地震作用下综合管廊内管道动力响应试验研究

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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。本文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。通过本文结论，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。

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	黄德龙1
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	宗钟凌1
	黄子渊2
	汤爱平2

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

Abstract：During an earthquake, although internal pipes could be protected by external a utility tunnel, they are often damaged due to an unreasonable design of pipe supports. In this study, aiming at the seismic response of the internal pipes of the utility tunnel, the test model of the utility tunnel and its internal pipes were designed, the corresponding sensors were laid. The utility tunnel model was placed in the shear box on the shaking table and loaded with the seismic waves. Firstly, the effect of accelerations was studied, and the attenuation law of acceleration peak and energy transmitted to pipes was obtained. The effects of longitudinal and transverse slippages of the pipes and the tunnel, as well as the forms of pipe supports and the materials of the pipes on the deformation of the pipes were then investigated. It was found that the degree of energy attenuation transmitted to the pipes inside the utility tunnel was basically above 80%. If the corresponding duration of the input seismic with large acceleration was long, the longitudinal relative slippage of the pipe was generally large. The vibration isolation effect of the angle steel support on the tunnel side wall was the stronger than that of the concrete pier support, and the seismic effect of placing the pipe directly in the pipe groove was the worst. The conclusions of this paper can not only provide the basis for the seismic design of internal pipes of a utility tunnel, but also quickly judge the damage of internal pipes after an earthquake, which is beneficial to the development of post-earthquake rescue.

Key words： utility tunnel internal pipe shaking table test relative slippage pipe support vibration isolation

收稿日期: 2022-08-23 出版日期: 2023-09-28

引用本文:

黄德龙1,2，宗钟凌1，黄子渊2，汤爱平2. 地震作用下综合管廊内管道动力响应试验研究[J]. 振动与冲击, 2023, 42(18): 250-258.
HUANG Delong1,2,ZONG Zhongling1,HUANG Ziyuan2,TANG Aiping2. Experimental study on the dynamic responses of pipes inside a utility tunnel under seismic action. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(18): 250-258.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I18/250

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