The Latest Resources

LimitState: GEO v3.6.1.26217 x64 [Size: 127 MB] ... This is a powerful geotechnical analysis Software. It provides unique geotechnical analysis capabilities to rapidly determine the critical failure mechanism and margin of safety for any problem. It tackles any ultimate limit state analysis or design problem involving slope stability, bearing capacity, walls, foundations, reinforced soil, or complex combined systems.

It can handle design and analysis problems of any geometry and loading conditions. No need to resort to application-specific hand calculations, spreadsheets, or software applications that attempt to automate these. It is as straightforward as conventional Limit Equilibrium methods but can model global soil failure, retaining wall stability, and bending failure. It can model supported and unsupported excavations, considering the effects of surface surcharges. Identify a wide range of failure mechanisms, including base heave and lateral instability.

LimitState: GEO is the only commercially available geotechnical software product to use the ground-breaking Discontinuity Layout Optimization (DLO) limit analysis technology that allows one tool to rapidly and directly evaluate stability, whatever the problem geometry. LimitState: GEO has been designed to be extremely easy to use, fully compatible with Eurocode 7, and output has been validated against a wide range of benchmark problems. Examples of the many applications of the software include: Footings / foundations + Cantilever stem walls + Reinforced soil + Slope stability + Seismic forces + Gabion walls + Gravity retaining walls + Deep excavations.

John Hughes, Robert Whittle ... 352 pages - Language:‎ English - Publisher: ‎CRC Press; (November, 2022) - ISBN-10: ‎1032060948 - ISBN-13: ‎978-1032060941.

High Resolution Pressuremeters and Geotechnical Engineering focuses on pressuremeters with internal transducers that allow measurement of strength, stiffness and in situ reference stress. It outlines the principles and the basics of the technology, gives guidance on good practice and making reliable analysis, provides case studies, and compares the pressuremeter test with similar ones from other devices to enable engineers to make informed choices.

A unique, up-to-date guide to high resolution pressuremeters with internal transducers + Contextualises analyses and advice to enable an informed choice of testing processes + Presents analyses previously unpublished in book form.

This practical guide will suit professionals at the consultancy level, pressuremeter practitioners and site investigation companies.

Mohammed Elshafie, Giulia Viggiani, Robert Mair ... 902 pages - Language: ‎English - Publisher: CRC Press; 2nd edition (November, 2022) - AmazonSIN: B0BDGQBFN3.

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.

Eduardo Rojas ... 372 pages - Language: ‎English - Publisher: ‎Bentham Science Publishers; (October, 2022).

Towards A Unified Soil Mechanics Theory demonstrates mathematical models for saturated and unsaturated soils by defining the effective stress equation. Chapters present hydraulic models that simulate water distribution in pores. Parameters from these models are then used to demonstrate the use of an effective stress equation to understand the mechanics of soils that have different material constitutions.

Key Features: - Sequentially explains soil modeling techniques for easy understanding - Demonstrates the use of an effective stress equation based on data from porous-solid models. - Explains how porous-solid models can simulate the soilwater retention curves of materials. - Establishes an elastoplastic framework for the volumetric behavior of unsaturated soils that is used to simulate the phenomenon of collapse upon wetting and the behavior of expansive soils. - Explains the practical application of fully a coupled hydro-mechanical (critical state) soil model - Includes scientific references for further reading.

The third edition includes additional information on retention curves in deforming curves, the application of a coupled hydro-mechanical model simulating undrained tests and the behavior of soils during static compaction, and the use of a porous-solid model to develop a fully analytical equation for the relative hydraulic conductivity of soils. The new chapters also cover the experimental parameters used to derive the models. This edition also updates material from previous editions, and adds new scientific references. Towards A Unified Soil Mechanics Theory paves the way for a universal theory of soil mechanics that has a wide range of applications. The book is a valuable reference to civil engineers, geotechnical engineers, earth scientists and hydrologists interested in soil mechanics at both academic and professional levels.

B. G. Clarke ... 352 pages - Language: ‎English - Publisher: ‎CRC Press; 2nd edition (November, 2022) - AmazonSIN: B0BLY2VVLD.

The pressuremeter is a versatile piece of ground investigation equipment that can be used to test any type of soil or rock in situ. It quantifies in-situ stress, stiffness, strength and permeability – the essential properties needed to design geotechnical structures. The results are used in pressuremeter specific design methods, empirical design methods and numerical analyses.

This reference book covers the types of pressuremeter and the control equipment, methods of installation, test procedures, methods of analysis including direct and indirect methods of interpretation, and application in design. This is supported by an exemplar specification for field operations with the interpretation of the results. Engineers are given enough detail to apply the results confidently.

This comprehensive and thorough discussion of pressuremeter testing in geotechnical design draws on over forty years’ experience in geotechnical engineering. It is essential for professional and academic engineering geologists and geotechnical, civil and structural engineers involved in ground investigation and geotechnical design.

Lars Grüne,‎ Jürgen Pannek ... 456 pages - Publisher: Springer; 2nd edition (November 11, 2016) - Language: English - ISBN-10: 3319460234 - ISBN-13: 978-3319460239.

This book offers readers a thorough and rigorous introduction to nonlinear model predictive control (NMPC) for discrete-time and sampled-data systems. NMPC schemes with and without stabilizing terminal constraints are detailed, and intuitive examples illustrate the performance of different NMPC variants. NMPC is interpreted as an approximation of infinite-horizon optimal control so that important properties like closed-loop stability, inverse optimality and suboptimality can be derived in a uniform manner. These results are complemented by discussions of feasibility and robustness. An introduction to nonlinear optimal control algorithms yields essential insights into how the nonlinear optimization routine―the core of any nonlinear model predictive controller―works. Accompanying software in MATLAB® and C++ (downloadable from extras.springer.com/), together with an explanatory appendix in the book itself, enables readers to perform computer experiments exploring the possibilities and limitations of NMPC. The second edition has been substantially rewritten, edited and updated to reflect the significant advances that have been made since the publication of its predecessor, including: • a new chapter on economic NMPC relaxing the assumption that the running cost penalizes the distance to a pre-defined equilibrium; • a new chapter on distributed NMPC discussing methods which facilitate the control of large-scale systems by splitting up the optimization into smaller subproblems; • an extended discussion of stability and performance using approximate updates rather than full optimization; • replacement of the pivotal sufficient condition for stability without stabilizing terminal conditions with a weaker alternative and inclusion of an alternative and much simpler proof in the analysis; and • further variations and extensions in response to suggestions from readers of the first edition. Though primarily aimed at academic researchers and practitioners working in control and optimization, the text is self-contained, featuring background material on infinite-horizon optimal control and Lyapunov stability theory that also makes it accessible for graduate students in control engineering and applied mathematics.

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