Inverse Analysis Approach to Identify the Loads on the External TBM Shield Surface and Its Application

doi:10.1007/s00603-019-01759-y

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Inverse Analysis Approach to Identify the Loads on the External TBM Shield Surface and Its Application
	Liu, Quansheng ; Liu, He ; Huang, Xing ; Pan, Yucong ; Luo, Ciyou ; Sang, Haomin
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019
卷号	52 期号:9 页码:3241-3260
关键词	Inverse analysis Loads identification TBM (tunnel boring machine) Newton iteration Numerical simulation
ISSN号	0723-2632
DOI	10.1007/s00603-019-01759-y
英文摘要	Identifying the surrounding rock loads acting on the external shield surface is critical to the safe construction of deep and long tunnels excavated by TBMs (tunnel boring machines). However, it is rather difficult or even impossible to carry out monitoring outside the TBM shield to directly determine the surrounding rock loads. In the present paper, based on modified Newton iteration and numerical simulation, an inverse analysis approach to identify the surrounding rock loads is proposed. This inverse problem is solved by minimizing the objective function that incorporates the difference between the monitored and calculated strains of discrete points on the internal TBM shield surface. During the inverse analysis, the external TBM shield surface is discretized into rectangular regions, and the nodal loads of each region are taken as the inverse parameters. Then, the distributed loads are approximately calculated by the interpolation of the nodal loads of each region. The proposed approach is calibrated with two numerical examples and then applied to analyze in situ monitoring data. The results show that the proposed approach is robust and efficient for identifying the distribution and magnitude of surrounding rock loads, and it is possible to carry out timely countermeasures to avoid shield jamming according to the identified loads.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000488875700022
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14893]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Wuhan Univ, Key Lab Safety Geotech & Struct Engn Hubei Prov, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Quansheng,Liu, He,Huang, Xing,et al. Inverse Analysis Approach to Identify the Loads on the External TBM Shield Surface and Its Application[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(9):3241-3260.
APA	Liu, Quansheng,Liu, He,Huang, Xing,Pan, Yucong,Luo, Ciyou,&Sang, Haomin.(2019).Inverse Analysis Approach to Identify the Loads on the External TBM Shield Surface and Its Application.ROCK MECHANICS AND ROCK ENGINEERING,52(9),3241-3260.
MLA	Liu, Quansheng,et al."Inverse Analysis Approach to Identify the Loads on the External TBM Shield Surface and Its Application".ROCK MECHANICS AND ROCK ENGINEERING 52.9(2019):3241-3260.