Effects of tunnelling on existing pipelines in layered soils

Zhang, Chenrong; Yu, Jian; Huang, Maosong

doi:10.1016/j.compgeo.2012.01.011

Cited by 58 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figures and show the calculated pipeline settlements and bending moments by the means of the coupling numerical method in this study and the two stages method presented by Zhang et al . Their comparisons with the results computed by finite element software are also provided.…”

Section: Example Verificationsmentioning

confidence: 89%

“…Moreover, the term of

K_{��}^{1}

is rather special to indicate the coupling effects of the interface boundary Γ � and the tunnel opening boundary

Γ_{�}^{1}

. So the term of

K_{��}^{1}

can thus be regarded as an additional term considering the coupling effects, which is the different from the two stages method . For the two stages method, the main assumption is that the presence of the existing pipeline does not affect the tunnel.…”

Section: Displacement Controlled Coupling Numerical Methodsmentioning

confidence: 99%

“…It can be divided to two stages: first, estimating greenfield ground movements caused by tunneling; second, calculating the pipeline response to these ground movements. It should be noted that the greenfield settlements in the two stages method presented by Zhang et al is based on the solutions proposed by Loganathan and Poulos .…”

Section: Example Verificationsmentioning

confidence: 99%

See 2 more Smart Citations

Deformation analysis of tunnel excavation below existing pipelines in multi‐layered soils based on displacement controlled coupling numerical method

Zhang

Huang

Zhang

2012

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

SUMMARY The effect of tunneling on surrounding environments, especially on existing buried pipelines is a problem that engineers designing and practicing in urban geotechnical environments encounter more frequently than in the past. However, previous studies are usually based on the assumption that the soil is homogeneous. How to reflect soil stratification is the main focus for the problem of tunneling in multi‐layered soils. A displacement controlled coupling numerical method is presented for the displacement analysis of tunnel excavation below existing pipelines in multi‐layered soils. On the basis of the layered soil model, to consider the soil nonhomogeneous characteristic, the finite element method and boundary element method are coupled to simulate the deformation of existing pipelines induced by tunneling. The solutions indicate that good agreements are obtained between the proposed coupling numerical method and the commercial software. The accuracy of the proposed numerical method is better than the two stages method based on the existing closed‐form solutions. Moreover, the results discussed in this paper show that the error obtained by the previous method of weighted average on the basis of homogeneous half space converted from layered soils is not negligible for the obvious difference of elastic parameters among successive layers. Copyright © 2012 John Wiley & Sons, Ltd.

show abstract

Section: Example Verificationsmentioning

confidence: 89%

“…Moreover, the term of

K_{��}^{1}

is rather special to indicate the coupling effects of the interface boundary Γ � and the tunnel opening boundary

Γ_{�}^{1}

. So the term of

K_{��}^{1}

Section: Displacement Controlled Coupling Numerical Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Deformation analysis of tunnel excavation below existing pipelines in multi‐layered soils based on displacement controlled coupling numerical method

Zhang

Huang

Zhang

2012

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The underground space in urban areas is frequently congested with utilities, including pipelines and conduits, that are affected by underground tunneling construction. (55) Pipeline failure refers to the situation where leakage or structural damage occurs in the underground buried pipelines, which can affect their normal usage. Fig.…”

Section: Failure Modes Of Underground Buried Pipelinesmentioning

confidence: 99%

Towards a Fuzzy Bayesian Network Based Approach for Safety Risk Analysis of Tunnel‐Induced Pipeline Damage

et al. 2015

View full text Add to dashboard Cite

Tunneling excavation is bound to produce significant disturbances to surrounding environments, and the tunnel-induced damage to adjacent underground buried pipelines is of considerable importance for geotechnical practice. A fuzzy Bayesian networks (FBNs) based approach for safety risk analysis is developed in this article with detailed step-by-step procedures, consisting of risk mechanism analysis, the FBN model establishment, fuzzification, FBN-based inference, defuzzification, and decision making. In accordance with the failure mechanism analysis, a tunnel-induced pipeline damage model is proposed to reveal the cause-effect relationships between the pipeline damage and its influential variables. In terms of the fuzzification process, an expert confidence indicator is proposed to reveal the reliability of the data when determining the fuzzy probability of occurrence of basic events, with both the judgment ability level and the subjectivity reliability level taken into account. By means of the fuzzy Bayesian inference, the approach proposed in this article is capable of calculating the probability distribution of potential safety risks and identifying the most likely potential causes of accidents under both prior knowledge and given evidence circumstances. A case concerning the safety analysis of underground buried pipelines adjacent to the construction of the Wuhan Yangtze River Tunnel is presented. The results demonstrate the feasibility of the proposed FBN approach and its application potential. The proposed approach can be used as a decision tool to provide support for safety assurance and management in tunnel construction, and thus increase the likelihood of a successful project in a complex project environment.

show abstract

“…The additional movements caused by the interaction between tunnels may result in asymmetric settlement troughs. The behaviours of existing structures induced by adjacent tunnelling have also been extensively studied, most of which focus on the influences on existing buildings (e.g., Boscardin and Cording, 1989;Burland, 1995;Boone, 1996;Burd et al, 2000;Mroueh and Shahrour, 2003;Zhang et al, 2013) or pipelines (e.g., Klar et al, 2005;Vorster et al, 2005;Fang et al, 2011;Zhang et al, 2012). Relatively speaking, there are only limited published data related to the response of existing tunnels to new tunnels construction nearby.…”

Section: Introductionmentioning

confidence: 98%

Effects of twin tunnels construction beneath existing shield-driven twin tunnels

Fang

Zhang

et al. 2015

Tunnelling and Underground Space Technology

150

View full text Add to dashboard Cite

Effects of tunnelling on existing pipelines in layered soils

Cited by 58 publications

References 13 publications

Deformation analysis of tunnel excavation below existing pipelines in multi‐layered soils based on displacement controlled coupling numerical method

Deformation analysis of tunnel excavation below existing pipelines in multi‐layered soils based on displacement controlled coupling numerical method

Towards a Fuzzy Bayesian Network Based Approach for Safety Risk Analysis of Tunnel‐Induced Pipeline Damage

Effects of twin tunnels construction beneath existing shield-driven twin tunnels

Contact Info

Product

Resources

About