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Full Description
It has become increasingly important, particularly in an urban environment, to predict soil behaviour and to confine the settlement or deformation of buildings adjacent to construction sites. One important factor is the choice of construction procedure for the installation of piles, sheet pile walls, anchors or for soil improvement techniques, ground freezing and tunnelling methods. The modelling of construction processes, which are frequently associated with large deformations of the soil and with strong changes in the structure of the soil around the construction plant, in the case of, for example, a drill, a bit, a vibrator, or an excavation tool, requires sophisticated and new methods in numerical modelling. Often the simulation of the construction procedure is neglected in the calculations. Such methods are described and discussed in this book, as are examples of the methods applied to geotechnical practice, field and laboratory testing as well as case studies.
This volume provides a valuable source of reference for scientists in geotechnical engineering and numerical modelling, geotechnical engineers, post graduate students, construction companies and consultants, manufacturers of geotechnical construction plants and software suppliers and developers of geotechnical construction methods.
Contents
Preface 1. Deep excavations: Selected topics in numerical simulation of supported excavations; Determination of soil parameters for modeling of deep excavations utilizing an inverse approach; Comparison and feasibility of three dimensional finite element modelling of deep excavations using non-linear soil models; Lessons learned from case studies of excavation support systems through Chicago glacial clays; Influence of the construction procedure on the displacements of excavation walls; 2. Diaphragm walls: Finite element analysis of the excavation of the new Garibaldi station of Napoli underground; The impact of diaphragm wall construction on the serviceability of adjacent strip foundations in soft ground; A comparison between monitoring data and numerical calculation of a diaphragm wall construction in Rotterdam; Small scale model tests on fresh concrete pressure in diaphragm wall panels; Metro line U5 Berlin - Deformation of diaphragm walls; 3. Soil improvement: Vibro stone column installation and its effect on ground improvement; On modelling vibro-compaction of dry sands; FE simulations of the installation of granular columns in soft soils; 4. Tunnelling: Large scale three-dimensional finite element analysis of underground construction; Iterative solution of intersecting tunnels using the generalised Jacobi preconditioner; Numerical modelling of a reinforcement process by umbrella arch; 5. Ground freezing: An elastic-viscoplastic model for frozen soils; Numerical and physical modeling of artificial ground freezing; Freezing of jet-grouted soil - comparison of numerical calculations and field data; FE-analysis of ground freezing for the construction of a tunnel cross connection; Ground freezing: an efficient method to control the settlements of buildings; Underground line U5 'Unter den Linden' Berlin, Germany Structural and thermal FE-calculations for ground freezing design; 6. Piling: Numerical modelling of pile jacking, driving and vibratory driving; Bored and screwed piles, continuum and discontinuum approaches; Numerical simulation of construction-induced stresses around Rammed Aggregate Piers; Numerical modelling of the case history of a piled raft with a viscohypoplastic model; Failure of a micro-pile wall during remodelling of a hotel: a backanalysis; 7. Numerical modelling and miscellaneous: Incorporation of meta-stable structure into hypoplasticity; Numerical simulation of consolidation and deformation of pulpy fine slimes due to re-contouring and covering of large uranium mill tailing ponds at Wismut; Numerical simulation of underground works and application to cut and cover construction; Effects of spatial variability of cement-treated soil on undrained bearing capacity
