Centrifuge Modelling for Civil Engineers

Centrifuge Modelling for Civil Engineers

by Gopal Madabhushi

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Overview

Centrifuge Modelling for Civil Engineers by Gopal Madabhushi

Solve Complex Ground and Foundation Problems

Presenting more than 25 years of teaching and working experience in a wide variety of centrifuge testing, the author of Centrifuge Modelling for Civil Engineers fills a need for information about this field. This text covers all aspects of centrifuge modelling. Expertly explaining the basic principles, the book makes this technique accessible to practicing engineers and researchers.

Appeals to Non-Specialists and Specialists Alike

Civil engineers that are new to the industry can refer to this material to solve complex geotechnical problems. The book outlines a generalized design process employed for civil engineering projects. It begins with the basics, and then moves on to increasingly complex methods and applications including shallow foundations, retaining walls, pile foundations, tunnelling beneath existing pile foundations, and assessing the stability of buildings and their foundations following earthquake-induced soil liquefaction. It addresses the use of modern imaging technique, data acquisition, and modelling techniques. It explains the necessary signal processing tools that are used to decipher centrifuge test data, and introduces the reader to the specialist aspects of dynamic centrifuge modelling used to study dynamic problems such as blast, wind, or wave loading with emphasis on earthquake engineering including soil liquefaction problems.


  • Introduces the equipment and instrumentation used in centrifuge testing
  • Presents in detail signal processing techniques such as smoothing and filtering
  • Provides example centrifuge data that can be used for sample analysis and interpretation

Centrifuge Modelling for Civil Engineers effectively describes the equipment, instrumentation, and signal processing techniques required to make the best use of the centrifuge modelling and test data. This text benefits graduate students, researchers, and practicing civil engineers involved with geotechnical issues.

Product Details

ISBN-13: 9780415668248
Publisher: Taylor & Francis
Publication date: 08/06/2014
Pages: 324
Product dimensions: 6.00(w) x 9.00(h) x 0.70(d)

About the Author

Dr Gopal Madabhushi is a professor of civil engineering at the University of Cambridge, UK and the director of the Schofield Centre. He has over 25 years of experience in the area of soil dynamics and earthquake engineering. His expertise extends from dynamic centrifuge modelling to the time domain finite element analyses of earthquake engineering problems, and has an active interest in the areas of soil liquefaction, soil-structure interaction, and liquefaction-resistant measures and their performances. Among other works he authored the geotechnical chapters in the book Seismic Design of buildings to Eurocode 8 (also published by Taylor & Francis).

Table of Contents

Modern geotechnical engineering design in civil engineering

Introduction

Complex role of geotechnical engineers

Role of centrifuge modelling

Need for numerical and physical modelling

Introduction

Use of numerical modelling in foundation design

Need for physical modelling

Benefits of centrifuge modelling

Benefits of numerical modelling

Complementarity of centrifuge modelling and numerical modelling

Summary

Uniform circular motion

Introduction

Uniform circular motion

Basic definitions: centripetal and centrifugal forces

Use of polar coordinates in uniform circular motion

Coriolis force and Euler force

Summary

Principles of centrifuge modelling

Introduction to centrifuge modelling

Principles of centrifuge modelling

Concepts of a field structure, prototype and the centrifuge model

Scaling laws in centrifuge modelling

Modelling of models

Summary

Examples

Geotechnical centrifuges: Some design considerations

Introduction to geotechnical centrifuges

Beam centrifuges

Drum centrifuges

Summary

Errors and limitations in centrifuge modelling

Introduction

Variation in gravity field

Radial gravity field

Particle size effects

Strain rate effects

Coriolis accelerations

Summary

Centrifuge equipment

Model containers

Model preparation techniques

In-flight actuators

In-flight soil characterization techniques

Summary

Centrifuge instrumentation

Introduction

Types of instruments

Deformation measurement

Summary

Centrifuge data acquisition systems

Introduction

Analog to digital conversion

Fundamentals of digital data logging

Time and frequency domains

Signal-to-noise ratio

Aliasing and Nyquist frequency

Filtering

Summary

Shallow foundations

Introduction

Bearing capacity of shallow foundations

Modelling of a shallow foundation in a laboratory

Centrifuge modelling of shallow foundations

Modelling of models

Summary

Retaining walls

Introduction

Retaining wall models at laboratory scale

Simulating retaining walls in a centrifuge

Centrifuge testing of cantilever retaining walls

Anchored retaining walls

Centrifuge testing of L-shaped walls

Centrifuge modelling of propped walls

Summary

Pile foundations

Introduction

Laboratory testing of pile foundations

Centrifuge modelling of pile foundations

Centrifuge modelling of pile installation

Centrifuge modelling of laterally loaded piles

Centrifuge modelling of tension piles

Negative skin friction in piles

Large-diameter monopiles

Summary

Modelling the construction sequences

Advanced centrifuge modelling

Construction sequence modelling

Modelling of staged excavations in front of a retaining wall

Modelling the interaction between a retaining wall and a building

Influence of diaphragm walls on a pile foundation

Modelling of propped retaining wall

Tunneling below an existing pile foundation

Tunneling below existing pipelines

Tunneling below a masonry structure

Summary

Dynamic centrifuge modelling

Modelling of dynamic events

Dynamic scaling laws

Discrepancies between general and dynamic scaling laws

Earthquake simulation in centrifuges

Saturation of centrifuge models

Centrifuge modelling of the dynamic soil-structure interaction problems

Centrifuge modelling of liquefaction problems

Summary

References

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