Experimental study on dynamic response of high-density polyethylene bellows under blasting seismic load

ZHANG Yuqi; JIANG Nan; JIA Yongsheng; ZHOU Chuanbo; LUO Xuedong; WU Tingyao

doi:10.11883/bzycj-2019-0399

Volume 40 Issue 9

Sep. 2020

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ZHANG Yuqi, JIANG Nan, JIA Yongsheng, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Experimental study on dynamic response of high-density polyethylene bellows under blasting seismic load[J]. Explosion And Shock Waves, 2020, 40(9): 095901. doi: 10.11883/bzycj-2019-0399

Citation:

ZHANG Yuqi, JIANG Nan, JIA Yongsheng, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Experimental study on dynamic response of high-density polyethylene bellows under blasting seismic load[J]. Explosion And Shock Waves, 2020, 40(9): 095901. doi: 10.11883/bzycj-2019-0399

Citation:

ZHANG Yuqi, JIANG Nan, JIA Yongsheng, ZHOU Chuanbo, LUO Xuedong, WU Tingyao. Experimental study on dynamic response of high-density polyethylene bellows under blasting seismic load[J]. Explosion And Shock Waves, 2020, 40(9): 095901. doi: 10.11883/bzycj-2019-0399

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Experimental study on dynamic response of high-density polyethylene bellows under blasting seismic load

doi: 10.11883/bzycj-2019-0399

ZHANG Yuqi^1
,,
JIANG Nan^{1, 2, 3
,
,},
JIA Yongsheng^{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 Engineering Blasting, Jianghan University, Wuhan, 430024, Hubei, China
3.
Wuhan Explosion & Blasting Co., Ltd, Wuhan, 430023, Hubei, China

Received Date: 2019-10-18
Rev Recd Date: 2020-05-24

Available Online: 2020-08-25

Publish Date: 2020-09-01

Abstract

Abstract

The dynamic response of buried high density polyethylene (HDPE) bellows under blasting seismic load was studied. First, the blasting test of buried pipeline was carried out by combining the blasting seismic test and dynamic strain test. Secondly, the dynamic response characteristics of buried pipeline under blasting seismic load were analyzed. Then, the characteristics of vibration velocity and dynamic strain distribution were studied. Finally, the pipe safety was evaluated based on the von Mises yield criterion, and the blasting vibration velocity control standard was proposed. The experimental results show that the vibration velocity of pipeline and ground and the dynamic strain of pipeline increase with the decrease of core distance and the increase of explosive quantity. The dominant frequency of blasting seismic wave is higher. The dominant frequency of pipeline is higher than the surface. Under the same blasting condition, the ground vibration velocity above the pipeline is generally higher than that of the pipeline. The peak axial strain on the back explosion side of the pipeline section is mainly tensile strain, and the peak circumferential strain on the front explosion side is mainly compressive strain. The vibration velocity of the pipeline can be safely controlled by 20 cm·s⁻¹, and the pipeline is in a safe state.
- blasting earthquake,
- HDPE bellows,
- field test,
- response characteristics,
- safety control

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References(24)

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