Dynamic responses of a concrete pipeline with bell-and-spigot joints buried in a silty clay layer to blasting seismic waves

XIA Yuqing; JIANG Nan; YAO Yingkang; ZHOU Chuanbo; LUO Xuedong; WU Tingyao

doi:10.11883/bzycj-2019-0207

Volume 40 Issue 4

Apr. 2020

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Article Navigation > Explosion And Shock Waves > 2020 > 40(4): 043302

XIA Yuqing, JIANG Nan, YAO Yingkang, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Dynamic responses of a concrete pipeline with bell-and-spigot joints buried in a silty clay layer to blasting seismic waves[J]. Explosion And Shock Waves, 2020, 40(4): 043302. doi: 10.11883/bzycj-2019-0207

Citation:

XIA Yuqing, JIANG Nan, YAO Yingkang, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Dynamic responses of a concrete pipeline with bell-and-spigot joints buried in a silty clay layer to blasting seismic waves[J]. Explosion And Shock Waves, 2020, 40(4): 043302. doi: 10.11883/bzycj-2019-0207

Citation:

XIA Yuqing, JIANG Nan, YAO Yingkang, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Dynamic responses of a concrete pipeline with bell-and-spigot joints buried in a silty clay layer to blasting seismic waves[J]. Explosion And Shock Waves, 2020, 40(4): 043302. doi: 10.11883/bzycj-2019-0207

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Dynamic responses of a concrete pipeline with bell-and-spigot joints buried in a silty clay layer to blasting seismic waves

doi: 10.11883/bzycj-2019-0207

XIA Yuqing^1
,,
JIANG Nan^{1, 2, 3
,
,},
YAO Yingkang^{2, 3},
ZHOU Chuanbo¹,
LUO Xuedong¹,
WU Tingyao¹

1.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, Hubei, China
2.
Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430024, Hubei, China
3.
Wuhan Explosion and Blasting Company Limited, Jianghan University, Wuhan 430024, Hubei, China

Received Date: 2019-05-20
Rev Recd Date: 2019-07-28
Publish Date: 2020-04-01

Abstract

Abstract

In order to evaluate the effect of blasting vibration on an adjacent concrete pipeline with bell-and-spigot joints buried in a silty clay layer, four blasting field experiments were conducted by applying the DH5956 dynamic strain testing system and TC-4850 blasting vibration device mounted on the buried pipelines, and the dynamic response characteristics of the concrete pipelines under blasting vibration were studied. The spatial distributions of the dynamic strain and vibration velocity of the pipe bodies and the bell-and-spigot joints were analyzed. Based on the maximum allowable deflection degree of the bell-and-spigot joints in the specification and the criterion of the dynamic tensile stress failure of the concrete, the safety criterion of the blasting vibration velocity for the bell-and-spigot concrete pipelines was proposed. The results show that there is an uncoordinated response between the pipe bodies and bell-and-spigot joints under the action of blasting vibration; the bell-and-spigot joints are the most venerable positions of the pipelines, and the failure of the the bell-and-spigot joints should be noticed when considering the effect of blasting vibration; the blasting vibration velocity control threshold of the the bell-and-spigot concrete pipelines is 5 cm/s, this research can provide a guidance for the pipeline protection in similar construction projects.
- bell-and-spigot concrete pipeline,
- field experiments,
- dynamic response,
- safety criterion

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References(16)

References

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