Safety Evaluation of Underground Gas Pipe under Blasting of Subway Connected Aisle: A Case Study

doi:10.1007/s12205-021-0399-9

	Safety Evaluation of Underground Gas Pipe under Blasting of Subway Connected Aisle: A Case Study
	Yang, Yumin 3; Cai, Zhongwei 2; Jiang, Nan 3; Zhou, Chuanbo 3; Li, Haibo 1
刊名	KSCE JOURNAL OF CIVIL ENGINEERING
	2021-10-27
页码	12
关键词	Blasting vibration Gas pipe Numerical simulation Dynamic response Safety criteria
ISSN号	1226-7988
DOI	10.1007/s12205-021-0399-9
英文摘要	How to ensure the underground gas pipe's safety under blasting construction of subway connected aisles is a key problem in tunnel construction. Based on the blasting excavation project of Wuhan Rail Transit Line 8 phase II, the numerical model whose reliability is verified by field monitoring data is established by ANSYS/LS-DYNA to analyze the dynamic underground gas pipe's dynamic characteristics under blasting excavation of the connected aisle. According to the piping design code, the allowable effective stress control standard of underground pipe is proposed to evaluate the underground pipe's safety under the blasting. The results show that: with the advance of blasting excavation, the position of the most dangerous section will change constantly and the pipe's peak particle velocity (PPV) will appear an obvious amplification phenomenon in both sides of metro tunnels. The pipe's PPV is greater than the ground surface's PPV. A mathematical model is established to predict the pipeline's PPV based on the linear relationship between the pipeline and the ground surface. According to the correlation between PPV and von-Mises stress of gas pipeline, a mathematical model between the pipe's von-Mises stress and distance is established to predict the pipeline's safety, which can provide guidance for actual blasting engineering.
资助项目	National Natural Science Foundation of China[41807265] ; National Natural Science Foundation of China[41972286] ; National Natural Science Foundation of China[42072309] ; Hubei Key Laboratory of Blasting Engineering Foundation[HKLBEF202001] ; Hubei Key Laboratory of Blasting Engineering Foundation[HKLBEF202002]
WOS研究方向	Engineering
语种	英语
出版者	KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
WOS记录号	WOS:000712501000001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28382]
专题	中科院武汉岩土力学所
通讯作者	Jiang, Nan
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.China Int Water & Elect Corp, Beijing 100120, Peoples R China 3.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yumin,Cai, Zhongwei,Jiang, Nan,et al. Safety Evaluation of Underground Gas Pipe under Blasting of Subway Connected Aisle: A Case Study[J]. KSCE JOURNAL OF CIVIL ENGINEERING,2021:12.
APA	Yang, Yumin,Cai, Zhongwei,Jiang, Nan,Zhou, Chuanbo,&Li, Haibo.(2021).Safety Evaluation of Underground Gas Pipe under Blasting of Subway Connected Aisle: A Case Study.KSCE JOURNAL OF CIVIL ENGINEERING,12.
MLA	Yang, Yumin,et al."Safety Evaluation of Underground Gas Pipe under Blasting of Subway Connected Aisle: A Case Study".KSCE JOURNAL OF CIVIL ENGINEERING (2021):12.