Geotechnical Aspects of Underground Construction in Soft Ground comprises a collection of 112 papers, the Fujita Lecture, three Special Lectures and the Bright Spark Lecture presented at the Tenth International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, held in Cambridge, United Kingdom, 27-29 June 2022. This second edition includes four general reports on the symposium themes.
The symposium is the latest in a series which began in New Delhi in 1994, and was followed by symposia in London (1996), Tokyo (1999), Toulouse (2002), Amsterdam (2005), Shanghai (2008), Rome (2011), Seoul (2014) and Sao Paulo (2017). This was organised by the Geotechnical Research Group at the University of Cambridge, under the auspices of the Technical Committee TC204 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE).
Geotechnical Aspects of Underground Construction in Soft Ground includes contributions from more than 25 countries on research, design and construction of underground works in soft ground. The contributions cover:
Field case studies
Sensing technologies and monitoring for underground construction in soft ground
Physical and numerical modelling of tunnels and deep excavations in soft ground
Seismic response of underground infrastructure in soft ground
Design and application of ground improvement for underground construction
Ground movements, interaction with existing structures and mitigation measures
The general reports give an overview of the papers submitted to the symposium, covered in four technical sessions. The proceedings include the written version of the five invited lectures covering topics ranging from developments in geotechnical aspects of underground construction, tunnelling and groundwater interaction (short and long-term effects), the influence of earth pressure balance shield tunnelling on pre-convergence and segmental liner loading (field observations, modelling and implications on design).
Similar to previous editions, Geotechnical Aspects of Underground Construction in Soft Ground represents a valuable source of reference on the current practice of analysis, design, and construction of tunnels and deep excavations in soft ground. The book is particularly aimed at academics and professionals interested in geotechnical and underground engineering.
Author(s): Mohammed Elshafie, Giulia Viggiani, Robert Mair
Publisher: CRC Press
Year: 2022
Language: English
Pages: 876
City: Boca Raton
Cover
Half Title
Title Page
Copyright Page
Table of contents
Preface to the current edition
Organisation
Sponsors
Field case studies and sensing technologies
Ovalisation of cast-iron tunnels in response to nearby tunneling work
Lubrication characteristics of pipejacking in soft alluvial deposits
Arecent subway construction incident in soft alluvial deposits of Taiwan
Settlements due to tunneling in the City of São Paulo
Evaluation of geological/geotechnical geostatistical models for tunneling applications
Pillar uplift observed in braced excavation of asubway station
Solution implementation for atunnel collapse in aweak embankment soil: The case of the Ali Boumendjel Metro station, Algiers, Algeria
Design of large twin-wall cofferdams for ship impact
Design of large temporary works ship impact protection structures
Large-scale improvement work of subway stations in soft ground
Comparison between predicted and measured performance of adeep excavation in soft clay in Gothenburg, Sweden
Grouting for the rescue of stuck TBM in conglomerate boulder layer
Tunnelling in urban areas and pile interception challenges – a case study: Bank station upgrade project (BSCU)
Impacts of new development on existing underground assets using greenfield model
Cementitious systems with carbon nanomaterials for underground infrastructure
Pipe jacking tunnel construction crossing the Bang Pakong River
Nine Elms Station substructure– implementation of the Observational Method by progressive modification
Evaluation of InSAR data for measuring the surface settlement during shield tunnel construction of the North-South Line in Amsterdam
Deep excavations for buildings in the Sabana Formation Bogota
EPB tunneling and shaft construction in soft deltaic deposits for arailway link to Barcelona airport
Use of jet grouted columns for deepening of basements and underpinning existing structures at Valkyrien in Oslo
Settlements induced by EPB TBMs tunneling, acase study of theoretical and monitoring values
Monitoring of an existing concrete-lined tunnel at CERN excavated in the molasse rock
Achieving sustainability in tunnelling through innovation
Measured post-construction ground response to EPBM tunnelling in London Clay
Gilgel Gibe II hydropower project in Ethiopia; TBM Tunnelling, when the rock turns into mud: Analysis of amajor collapse, its causes and solutions
Modelling and testing of tunnels and deep excavations in soft ground
Torque estimation for tunnel boring machine design in soft ground
Variability of soil stress-strain non-linearity for use in MSD analyses evaluated using databases of triaxial tests on fine-grained soils
Asymmetric pressure distribution in EPB shields: Evaluation of measurements and numerical simulations
Pore pressures in front of aslurry TBM, the influence of plastering mechanisms
Face pressure and volume loss relationships for pressurized tunneling in granular soils
Albert Embankment: Design of deep excavations in the River Thames foreshore
Centrifuge and numerical modelling of the influence of structural stiffness on basement heave in over-consolidated clay
Influence of TBM geometry on lining loads of deep tunnels
Development of anew excavation technique for centrifuge testing in sand
Interpretation of soil parameters used for numerical analysis with small strain model for deep excavation in loose to medium dense sand
Prediction of damage intensity of reinforced concrete tunnels and soil against blast loading
EPB-TBM tunnel under internal pressure: Assessment of serviceability
Arisk assessment of downdrag induced by reconsolidation of clays after upwards pipe jacking
Small-scale modelling of pile drilling in sand– investigation of the influence on surrounding ground
Excavation of an artificial tunnel using compressed air
The use of adaptive smoothed finite-element limit analysis to seismic stability of tunnels
Upper bound analysis of seismic stability of tunnels using cell-based smoothed finite element
Investigation of the seismic performance of the complicated tunnel sections with non-uniform heights
Influence of the annulus grout on the soil-lining interaction for EBP tunneling
Long term additional load on ashield tunnel in soft clay due to clay consolidation with water leakage
Astudy of a strut-free excavation system in deep excavations
Increasing the passive resistance of deep excavations in very soft soils to mitigate ground movements through centrifuge modelling
Machine learning algorithms applied to the blowout susceptibility estimation around pressurized cavities in drained soil
Specifying and testing fibre reinforced sprayed concrete: Advantages and challenges of some testing methods
Undrained seismic response of tunnels
Preliminary evidences on the influence of grains micro-structural features on the TBM tools wear
Front-face pressure drop during the standstill phase for EPB mechanized tunnelling in coarse-grained soils
Aminiature EPB TBM for use in ageotechnical centrifuge
Urban tunnelling in glacial soils: Tunnel de Champel, Geneva
Simplified stress-strain models applied to data from triaxial and pressuremeter tests on London Clay
Propped cantilever wall stability design with the ‘What You Design Is What You Get’ method– background and development
Multi-objective optimisation design for composite tunnel linings using non-dominated sorting genetic algorithm
Support pressure transfer at aslurry supported tunnel face due to time dependent decrease of soil permeability
SEM deformation prediction and observation by 3D numerical analysis
Face stability of slurry shield-driven tunnel in an aquifer
Numerical analysis of Double-O-Tube shield tunneling in Shanghai
Physical modelling of transient processes at the slurry supported tunnel face during shield excavation
Ground movements, interaction with existing structures and mitigation
measures
Interaction between anewly excavated underground ramp and deep existing tunnels
Pile driving interaction with existing tunnel
Numerical modelling of framed structures with masonry infills affected by tunnelling-induced deformation and damage
Analytical investigation for the circumferential behavior of the shield-driven tunnel adjacent to abraced excavation
Winkler model for axial deformation of compressible piles due to tunnelling
Bayesian inference for deep excavations
An underground excavation in Barcelona and its interaction with existing structures
Equivalent frame model for the assessment of tunnel-induced damage to masonry buildings
Use of underpinning, horizontal jet grouting and ground freezing for ground stabilization to control settlement of existing MRT tunnels during construction of a link-way and railway tunnels for anew MRT line in Singapore
Tunnel lining behaviors of close proximity large diameter parallel shield tunnels
Bolu NATM Tunnel, changes to the support system due to soft ground conditions and deformation
Use of spile umbrellas to reduce deformation
Modified gap method for prediction of TBM tunnelling-induced soil settlement in sand - acase study
Long-term behaviour of ground around tunnel due to groundwater level fluctuations
Numerical investigation into time-dependent effects on short-term tunnelling-induced ground response in London Clay
Semi-coupled modelling of soil-structure interaction during tunnel construction: Two case studies from Bank Station Capacity Upgrade
Centrifuge tests on tunnel-building interaction in liquefiable soil
The effect of deep excavation on existing railway tunnel
Simplified modelling of the transient response of underground structures due to dynamic loads generated from underground tunnels
Mapping the risk of building damage due to excavation-induced displacements
Anew approach for compensation grouting in highly permeable gravel
Acase study on the effects of anchor drilling in soft, low sensitive clay and sandy, silty soils
Prediction of long-term settlement in shield tunnel using GA-BP neural network
Tunnelling through apiled foundation: Interaction effects
The use of protective structures to reduce tunnelling induced damage to buildings
Evaluation method on ground movement using continuum ground model
The response of the Europier Terminal Building to the excavation of the T2B basement at Heathrow Airport
Longitudinal structural deformation of shield tunnels induced by overlying excavation
Simulating the water-soil leakage induced deformation around the shield tunnel with material point method
Influencing factors and protection technologies of underground diaphragm wall and deep foundation pit construction on metro station
Acentrifuge modelling study on the effect of foundation configuration on tunnel-frame interaction
Modelling ground response to TBM tunnelling with active face support
Tunnel face stability considering drainage and surface settlements
Impact of subsoil spatial variability on deformations of immersed tunnel
Coupled elastoplastic analysis of the soil-pile foundation interaction induced by deep excavations
Design and application of ground improvement for underground
construction
Microcapsule-based self-healing cement stabilised clay
Application of biopolymer hydrogel for ground hydraulic conductivity control under pressurized conditions
Soil enhancement via microbially induced calcite precipitation
Base grouting against uplifting water for adeep excavation in Taipei basin
The largest tunnels in freshly consolidated soft soil: Tuen Mun Chek Lap Kok Link Subsea tunnels, Hong-Kong
Soil conditioning for EPB tunnelling in coarse grained soils based on laboratory model tests
Influence of mineral or polymeric modification on bentonite-based tunnel face support
Compensation grouting for conventional tunnelling with low overburden at the Oberau Bypass Tunnel
Parameter selection for ground improvement works: Lessons from aninstrumented site and numerical analysis
Jet grouting for tunnelling at London Victoria station
Unconfined compressive strength of sand-fines mixtures treated with chemical grouts
Permeability characteristics of coarse-grained soil conditioned with foam for EPB shield tunnelling
Stabilisation of Singapore soft marine clay using anovel sustainable binder for underground construction
Experimental study of pore water pressure development in soil when foam infiltrates into saturated sand
Author Index
Copyright
Title Page
Dedication
Contents
Chapter 1: ‘I’m thinking’ – Oh, but are you?
Chapter 2: Renegade perception
Chapter 3: The Pushbacker sting
Chapter 4: ‘Covid’: The calculated catastrophe
Chapter 5: There is no ‘virus’
Chapter 6: Sequence of deceit
Chapter 7: War on your mind
Chapter 8: ‘Reframing’ insanity
Chapter 9: We must have it? So what is it?
Chapter 10: Human 2.0
Chapter 11: Who controls the Cult?
Chapter 12: Escaping Wetiko
Postscript
Appendix: Cowan-Kaufman-Morell Statement on Virus Isolation
Bibliography
Index
