Geotechnical Aspects of Underground Construction in Soft Ground

Ng, Charles W.W.; Huang, Hongwei; Liu, G.B.

doi:10.1201/9780203879986

2008

DOI: 10.1201/9780203879986

|View full text |Cite

Geotechnical Aspects of Underground Construction in Soft Ground

Charles W.W. Ng¹,

Hongwei Huang²,

G.B. Liu³

Abstract: Association for Geotechnical Engineering under the auspices of TC204 of ISSMGE. The book includes contributions from more than 15 countries on the research, design, and construction of underground works in soft ground. The theme of IS-Macau 2024 is "Tunnelling and Underground Construction for Smart Cities". The contributions cover the following topics:

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2017

2023

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

References 150 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Finite element-based geotechnical risk analysis for anchor-supported deep excavations

Bozkurt

Akbas

2023

Arab J Geosci

View full text Add to dashboard Cite

Evaluation of the reliability of deep excavation support systems requires the inclusion of the soil variability in conjunction with probabilistic analysis. This is often considered a complicated process; therefore, the method is usually not followed in routine engineering practice. Recent developments in finite element modelling now enable probabilistic analyses to be performed more conveniently. As an illustrative example, the case history of a 20 m-deep excavation supported by anchored drilled shafts in the Sogutozu district of Ankara was investigated. Experimental results indicate that saturated sand-gravel bands, which are common within Ankara Clay, have the potential to cause a significant decrease in the anchor capacity. Ergo the excavation performance, including structural capacity and wall lateral displacements, was evaluated taking into regard the probabilistic nature of the effect of these bands and the variability of the soil parameters. Back-analysis was performed and compared with inclinometer readings to examine the capability of the numerical model to simulate the field behaviour. Later, additional finite element analyses were carried out through Python scripting software to investigate the reliability of the excavation. Geotechnical parameters of the Ankara Clay produced by Monte Carlo simulation method were used in these analyses. The results were evaluated within the context of recommended acceptable reliability levels. The reliability of the system was determined to be relatively low when taking into account the adverse impact of sand and gravel bands.

show abstract

Finite element-based geotechnical risk analysis for anchor-supported deep excavations

Bozkurt

Akbas

2023

Arab J Geosci

View full text Add to dashboard Cite

show abstract

Structural Responses of a Tunnel Lining Due to an Adjacent Loaded Pile

Lueprasert

Jongpradist

et al. 2023

Int J Civ Eng

View full text Add to dashboard Cite

Analysis of Pipe‐Roof in Tunnel Exiting Portal by the Foundation Elastic Model

Luo

Chen

Bao³

et al. 2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The Pasternak double-parameter elastic foundation model of pipe-roof during the construction of tunnel exits is first established. Based on the portal project of Hanjiashan highway tunnel, an inclinometer is adopted to measure the settlement deformation of a pipe-roof and demonstrates the deformation law in tunnel exiting portals. The formulas for calculating the deflection and internal forces are derived to analyze the deformation of the pipe-roof in each excavation stage, and the results are compared with field monitoring data. Finally, the influences of excavation height, excavation footage, and stiffness of the pipe-roof on the support effect are investigated. Analysis indicates that the longitudinal settlement curve shows a groove distribution, which can be divided into five stages: micro, rapid, continuous, resilience, and stable deformation. Moreover, the subsidence rate reaches its maximum at the tunnel face. The influence of tunnel excavation on the deformation mainly has a range of 1.5 times the excavation height. To control the deflection of the pipe-roof, excavation height should be controlled in the range of 3.5 m, excavation footage should be controlled in the range of 1-1.4 m, and the diameter and thickness of the selected pipe-roof should be in the ranges of 89-159 mm and 5-8 mm, respectively.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Geotechnical Aspects of Underground Construction in Soft Ground

Cited by 5 publications

References 150 publications

Finite element-based geotechnical risk analysis for anchor-supported deep excavations

Finite element-based geotechnical risk analysis for anchor-supported deep excavations

Structural Responses of a Tunnel Lining Due to an Adjacent Loaded Pile

Analysis of Pipe‐Roof in Tunnel Exiting Portal by the Foundation Elastic Model

Contact Info

Product

Resources

About