☆ 4.7 Article

Deformation analysis and protection measures of existing metro tunnels effected by river channel excavation in soft soils

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2024)

Related references

Note: Only part of the references are listed.

Article Construction & Building Technology

Ground and tunnel deformation induced by excavation in pipe-roof pre-construction tunnel: A case study

Songsong Yang et al.

Summary: The tunnel crossing project of Taiyuan Railway Station was constructed using the pipe-roof preconstruction method. The monitoring results showed that the tunnel deformations were safe and had little impact on the passage of trains. These findings are of important reference value.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2023)

Add to Collection

Article Construction & Building Technology

Evolution of tunnel uplift induced by adjacent long and collinear excavation and an effective protective measure

Yanru Zhao et al.

Summary: In this study, an effective anti-floating measure combining shaft excavation with the frictional pile slab (FPS) was proposed for long and collinear foundation pits above existing tunnels. The convergence of the shield segments was measured over 800 days, and numerical simulation was conducted to analyze the effect of shaft excavation width and frictional pile dimensions on tunnel uplift. A multi-objective optimization procedure was used to optimize the anti-floating design considering safety and economy. Compared to the high-pressure jet-grouting pile method, the FPS method proved more effective in controlling tunnel heave. The presented data and methods can provide useful guidance for similar scenarios.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2023)

Add to Collection

Article Engineering, Multidisciplinary

Mathematical modelling for shield tunneling induced displacement effects on in-service tunnel: theoretical solution including shearing deformation of segment and stiffness reduction of circumferential joints

Zhiguo Zhang et al.

Summary: This paper presents a two-stage analysis based on the Timoshenko beam model and Kerr foundation model to estimate the response of in-service tunnel. The accuracy of the method is verified with three engineering cases. Parametric analyses reveal the effects of soil elastic modulus, in-service tunnel embedment depth, diameter, and equivalent bending stiffness on tunnel displacement and internal force responses. The reduction factor has a minimal effect on tunnel displacement and segment moment but impacts local rotation around joints. (c) 2023 Elsevier Inc. All rights reserved.

APPLIED MATHEMATICAL MODELLING (2023)

Add to Collection

Article Construction & Building Technology

Theoretical analysis on the deformation of existing tunnel caused by under-crossing of large-diameter slurry shield considering construction factors

Zhi Ding et al.

Summary: In this study, a simplified analytical method is proposed to evaluate the deformation behaviors of existing tunnels caused by large-diameter slurry shield under-crossing. The method takes into account construction factors such as additional thrust, friction force, and grouting pressure, and calculates the deformation of the existing tunnel in saturated soil. The proposed method is verified with field measurement data and a parametric analysis is conducted to study the influence of different factors. Safe values for shield crossing clearance are recommended based on the analysis. This analytical solution can serve as a reference in predicting potential risks in engineering practices.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2023)

Add to Collection

Article Engineering, Geological

Analytical solution for longitudinal deformation of shield tunnel induced by overcrossing tunnelling considering circumferential joints

Zhiwei Zhang et al.

Summary: This paper presents a new analytical solution for evaluating the longitudinal deformation of shield tunnel in overcrossing tunnelling, taking into consideration circumferential joints. A simplified longitudinal beam-spring model is established to accurately model the longitudinal behavior of the tunnel, considering the opening and dislocation between segmental rings. The proposed method is verified through various cases and compared with other analytical methods, demonstrating its effectiveness in capturing tunnel segmental ring and joint deformation.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING (2023)

Add to Collection

Article Construction & Building Technology

Semi–analytical solution for ultimate bearing capacity of straight–jointed segmental tunnel lining

Zhang Xiaohui et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2023)

Add to Collection

Article Chemistry, Multidisciplinary

Numerical Study on the Effect of Large Deep Foundation Excavation on Underlying Complex Intersecting Tunnels

Xiang Zhao et al.

Summary: In this paper, the effect of large deep foundation excavations on existing tunnels with complex geometry was analyzed using a three-dimensional finite element model. The results showed that excavation of the foundation pit caused heave deformation in the tunnels, which followed a normal distribution. The excavations had minimal horizontal and vertical displacements and convergences in the tunnels, meeting the control requirements. Stress concentration was observed at the intersections of multiple tunnels during construction, but the lining stress slightly decreased as excavation progressed.

APPLIED SCIENCES-BASEL (2022)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Timoshenko-beam-based response of existing tunnel to single tunneling underneath and numerical verification of opening and dislocation

Jian Yu et al.

Summary: This study investigates the longitudinal deformation characteristics and response of shield tunnels, proposing a solution to the shear locking problem of the Timoshenko beam. The proposed method is verified through field cases and finite element models, and design charts for assessing tunnel deformation are established.

COMPUTERS AND GEOTECHNICS (2022)

Add to Collection

Article Multidisciplinary Sciences

A closed form shape function describing 3D settlement field around a deep excavation in sand

Gianpiero Russo et al.

Summary: This paper discusses the issue of soil movements around deep excavations in urban environments and presents various methods for predicting ground movements. It reviews existing 2D semi-empirical methods and modifies and combines them to develop a new 3D analytical description of the subsidence trough. The proposed method is validated through numerical simulations and real case studies in sand, demonstrating its effectiveness.

SCIENTIFIC REPORTS (2022)

Add to Collection

Article Engineering, Civil

Field measurement analysis of the influence of simultaneous construction of river channel and bridge on existing double shield tunnels

Wenhui Yang et al.

Summary: This study investigates the influence of construction of a river channel and a bridge on existing metro tunnels in Changzhou. It proposes a protection scheme based on 3D numerical modelling and evaluates the safety of the tunnel structures through field monitoring. The results provide insights into the construction stages and the mechanism of disturbance during short-distance pile construction.

UNDERGROUND SPACE (2022)

Add to Collection

Article Construction & Building Technology

Monitoring a deep excavation in pyroclastic soil and soft rock

Marco Valerio Nicotera et al.

Summary: This study presents the construction process and monitoring results of the completion of the downtown stretch of Line 1 of the Napoli underground in Italy. It covers measurements of pore water pressures, displacement of retaining structures, ground anchor forces, temperature measurements, and subsidence of surrounding buildings. Valuable lessons are learned from the effectiveness of construction techniques and the relationships among different sets of measurements.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2021)

Add to Collection

Article Construction & Building Technology

Effect of Excavation Sequence on Uplift Deformation of Underlying Existing Metro Tunnel

Tao Yang et al.

Summary: The study focused on the excavation-induced impact on the underlying existing tunnel, analyzing the effects of different excavation sequences and proposing measures to minimize uplift deformation. The research combined numerical simulations with field data analysis to provide practical insights for engineering projects.

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES (2021)

Add to Collection

Article Engineering, Environmental

In situ grouting tests for differential settlement treatment of a cut-and-cover metro tunnel in soft soils

Honggui Di et al.

Summary: This study presents three comparative in situ grouting tests for long-term settlement treatment of a cut-and-cover tunnel. The findings suggest that a bottom-up grouting sequence and a cement and water glass grout mixture are more effective for tunnel settlement treatment, providing useful guidance for similar projects.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Closed-form solution for excavation-induced ground settlement profile in clay

Xiao-zhen Fan et al.

Summary: This study proposes a closed-form solution for predicting excavation-induced ground settlement profile, which is validated and proven effective through comparison with existing methods and case record data.

COMPUTERS AND GEOTECHNICS (2021)

Add to Collection

Article Construction & Building Technology

Centrifuge modeling of effectiveness of protective measures on existing tunnel subjected to nearby excavation

Fanyan Meng et al.

Summary: The study found that soil improvement and grouting around the tunnel can effectively mitigate ground settlements, earth pressure changes, soil heave at the excavation base, tunnel heave, and bending moments. This effectiveness may come from the restriction effects of soil improvement on the diaphragm wall and ground, as well as the strengthening effects of grouting on tunnel-soil interactions.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2021)

Add to Collection

Article Engineering, Civil

Deformation analysis and safety assessment of existing metro tunnels affected by excavation of a foundation pit

Shuaihua Ye et al.

Summary: Excavating a foundation pit can significantly impact adjacent structures and underground pipelines due to changes in soil stress, necessitating simulation-based structural optimization for stability and safety. Factors like distance, earthwork volume, and geological conditions influence the impact on subway tunnels, with results offering valuable guidance for similar projects.

UNDERGROUND SPACE (2021)

Add to Collection

Article Engineering, Geological

Observed long-term differential settlement of metro structures built on soft deposits in the Yangtze River Delta region of China

Honggui Di et al.

CANADIAN GEOTECHNICAL JOURNAL (2020)

Add to Collection

Article Construction & Building Technology

Settlement behaviors of existing tunnel caused by obliquely under-crossing shield tunneling in close proximity with small intersection angle

Hongpeng Lai et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2020)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Analytical solution for the response of an existing tunnel induced by above-crossing shield tunneling

Bo Liu et al.

COMPUTERS AND GEOTECHNICS (2020)

Add to Collection

Article Construction & Building Technology

Observed behaviors of a long and deep excavation and collinear underlying tunnels in Shenzhen granite residual soil

Fan-yan Meng et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2020)

Add to Collection

Article Multidisciplinary Sciences

The Study for Longitudinal Deformation of Adjacent Shield Tunnel Due to Foundation Pit Excavation with Consideration of the Retaining Structure Deformation

Xinhai Zhang et al.

SYMMETRY-BASEL (2020)

Add to Collection

Article Construction & Building Technology

Performance of Existing Subway Tunnels Undercrossed by Four Closely Spaced Shield Tunnels

Dalong Jin et al.

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES (2019)

Add to Collection

Article Construction & Building Technology

Numerical study on responses of an existing metro line to staged deep excavations

Ming-Guang Li et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2019)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Analytical solution for the response of an existing tunnel to a new tunnel excavation underneath

Dong-Mei Zhang et al.

COMPUTERS AND GEOTECHNICS (2019)

Add to Collection

Article Construction & Building Technology

Effect of the excavation clearance of an under-crossing shield tunnel on existing shield tunnels

Minglun Yin et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2018)

Add to Collection

Article Construction & Building Technology

Responses of a Newly Built Metro Line Connected to Deep Excavations in Soft Clay

Ming-Guang Li et al.

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES (2017)

Add to Collection

Article Construction & Building Technology

A simplified method to estimate three-dimensional tunnel responses to basement excavation

Jiangwei Shi et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2017)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Simplified analytical method for evaluating the effects of adjacent excavation on shield tunnel considering the shearing effect

Rongzhu Liang et al.

COMPUTERS AND GEOTECHNICS (2017)

Add to Collection

Article Construction & Building Technology

Differential Settlement and Induced Structural Damage in a Cut-and-Cover Subway Tunnel in a Soft Deposit

Shunhua Zhou et al.

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES (2016)

Add to Collection

Article Construction & Building Technology

Investigation of response of metro tunnels due to adjacent large excavation and protective measures in soft soils

Renpeng Chen et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2016)

Add to Collection

Article Engineering, Geological

Effects of construction sequence and cover depth on crossing-tunnel interaction

Thayanan Boonyarak et al.

CANADIAN GEOTECHNICAL JOURNAL (2015)

Add to Collection

Article Engineering, Geological

Clay hypoplasticity model including stiffness anisotropy

D. Masin

GEOTECHNIQUE (2014)

Add to Collection

Article Construction & Building Technology

Key protection techniques adopted and analysis of influence on adjacent buildings due to the Bund Tunnel construction

Yun Bai et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2014)

Add to Collection

Article Engineering, Geological

Three-dimensional centrifuge modelling of basement excavation effects on an existing tunnel in dry sand

Charles W. W. Ng et al.

CANADIAN GEOTECHNICAL JOURNAL (2013)

Add to Collection

Article Construction & Building Technology

Evaluation of deformation response for adjacent tunnels due to soil unloading in excavation engineering

Zhiguo Zhang et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2013)

Add to Collection

Article Construction & Building Technology

Prediction of tunnel displacement induced by adjacent excavation in soft soil

Jun-Feng Zhang et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2013)

Add to Collection

Article Engineering, Geological

Influence of Deep Excavations on Nearby Existing Tunnels

Xu Huang et al.

INTERNATIONAL JOURNAL OF GEOMECHANICS (2013)

Add to Collection

Article Computer Science, Interdisciplinary Applications

A simplified method for predicting ground settlement profiles induced by excavation in soft clay

Chang-Yu Ou et al.

COMPUTERS AND GEOTECHNICS (2011)

Add to Collection

Article Engineering, Geological

Use of a Line of Piles to Prevent Damages Induced by Tunnel Excavation

Emilio Bilotta et al.

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING (2011)

Add to Collection

Article Construction & Building Technology

Numerical investigation of underlying tunnel heave during a new tunnel construction

Hanlong Liu et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2011)

Add to Collection

Article Engineering, Geological

Responses of single piles to tunneling-induced soil movements in sandy ground

Chung-Jung Lee et al.

CANADIAN GEOTECHNICAL JOURNAL (2007)

Add to Collection

Article Construction & Building Technology

Response of a Taipei Rapid Transit System (TRTS) tunnel to adjacent excavation

CT Chang et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2001)

Add to Collection

Article Construction & Building Technology

Effect of large excavation on deformation of adjacent MRT tunnels

JS Sharma et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2001)

Add to Collection

Article Computer Science, Interdisciplinary Applications

Tunnel complex unloaded by a deep excavation

M Dolezalova

COMPUTERS AND GEOTECHNICS (2001)

Add to Collection

© Peeref 2019-2024. All rights reserved.