Dynamic failure mechanism of HDPE pipelines with a gasketed bell and spigot joint subjected to blasting seismic load

ZHANG Yuqi; JIANG Nan; ZHOU Chuanbo; YAO Yingkang; LI Haibo; CAI Zhongwei; HU Zongyao

doi:10.11883/bzycj-2021-0492

Volume 42 Issue 12

Dec. 2022

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ZHANG Yuqi, JIANG Nan, ZHOU Chuanbo, YAO Yingkang, LI Haibo, CAI Zhongwei, HU Zongyao. Dynamic failure mechanism of HDPE pipelines with a gasketed bell and spigot joint subjected to blasting seismic load[J]. Explosion And Shock Waves, 2022, 42(12): 125101. doi: 10.11883/bzycj-2021-0492

Citation:

ZHANG Yuqi, JIANG Nan, ZHOU Chuanbo, YAO Yingkang, LI Haibo, CAI Zhongwei, HU Zongyao. Dynamic failure mechanism of HDPE pipelines with a gasketed bell and spigot joint subjected to blasting seismic load[J]. Explosion And Shock Waves, 2022, 42(12): 125101. doi: 10.11883/bzycj-2021-0492

Citation:

ZHANG Yuqi, JIANG Nan, ZHOU Chuanbo, YAO Yingkang, LI Haibo, CAI Zhongwei, HU Zongyao. Dynamic failure mechanism of HDPE pipelines with a gasketed bell and spigot joint subjected to blasting seismic load[J]. Explosion And Shock Waves, 2022, 42(12): 125101. doi: 10.11883/bzycj-2021-0492

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Dynamic failure mechanism of HDPE pipelines with a gasketed bell and spigot joint subjected to blasting seismic load

doi: 10.11883/bzycj-2021-0492

1.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, Hubei, China
2.
Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, Hubei, China
3.
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China
4.
China International Water & Electric Corporation, Beijing 100120, China

Received Date: 2021-11-24
Accepted Date: 2022-11-10
Rev Recd Date: 2022-01-04

Available Online: 2022-11-14

Publish Date: 2022-12-08

Abstract

Abstract

Pipelines with a gasketed bell and spigot joint are more vulnerable to external load damage, leading to pipeline failure. To ensure the safe operation of adjacent high-density polyethylene (HDPE) bellows during blasting excavation, control of the influence of blasting vibration load on the pipeline is the main focus. The vibration velocity and dynamic strain response data of the pipeline were collected from the field test of a full-scale embedded single-segment HDPE bellow. The HDPE bellow models without socket contact and with an elastic sealing ring were established using the LS-DYNA numerical simulation software. The reliability of the model parameters of the HDPE bellows without a joint was verified by the field test data, and the response laws and failure mechanisms of the structural displacement, vibration velocity, and effective stress of the HDPE bellows with a gasketed bell and spigot joint were compared and analyzed. The safe vibration velocity of the pipe was determined using the pipeline response law and the allowable rotation angle of the interface in conjunction with the current specification. The research results show that the resultant vibration velocity, resultant displacement, and effective stress of the bellow with a gasketed bell and spigot joint are greater than those of the bellow without a joint. At the same cross-section, the resultant vibration velocity and effective stress on the explosion side of the bellow with a gasketed bell and spigot joint are higher, and the maximum resultant displacement occurs on the back of the explosion side of the cross-section. Along the axis direction of the pipeline, the resultant displacement and the resultant vibration velocity of the pipeline decrease continuously from the center to both ends of the pipeline, and the resultant displacement of the pipeline with a gasketed bell and spigot joint is larger. The safe vibration velocity of the pipeline with a gasketed bell and spigot joint under such working conditions is 24.77 cm/s, according to the allowable rotation angle of the interface.
- gasketed bell and spigot joint,
- HDPE bellow,
- blast vibration loading,
- safety assessment

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References(26)

References

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