This book is the first attempt to summarize and present, in one volume, the major developments achieved to date in the field of cavity expansion theory and its applications in geomechanics. Pdf cavity expansion analysis for the interpretation of cpt data in. Cavity expansion methods in geomechanics by haisui yu school of civil engineering, university of nottingham, u. Cavity expansioncontraction analysis in soil or rock is concerned with the. Mining engineering ms 173, mackay school of mines, university of nevada, reno, reno, nevada, 8955709. The problem is formulated by assuming smallstrain deformation in the elastic zone and largestrain deformation in the plastic zone. Largedeformation analysis for cavity expansion in strain. Cavity expansion analyses, field test data, and theoretical relationships from the literature are used to evaluate the selfpenetration potential in different soil types.
Fully elasticplastic solutions to the cavity expansion are obtained and they are compared. Cavity expansion methods in geomechanics cavity expansion methods in geomechanics by haisui yu school ofcivil engineering, university. Analytical solution for undrained plane strain expansion of a. Within this framework, a simple flow theory of strain gradient plasticity for frictional materials like sand is developed first by incorporating a secondorder strain gradient into the mohrcoulomb yield function, and then it is applied to the quasistatic cavity expansion analysis in order to capture the commonly observed sizestrengthening. Elasticplastic solutions for expanding cavities embedded. On the contrary, the cavity remains spherical or cylindrical throughout the displacementcontrolled cavity expansion process. Predicting soil expansion force during static pipe bursting.
The constitutive relationship of thermoplasticity is described by lalouis advanced and unified constitutive model for environmental geomechanical thermal effect acmeg. Cavity expansion methods in geomechanics springerlink. You can read online cavity expansion methods in geomechanics here in pdf, epub, mobi or docx formats. Although it is intended primarily as a reference book for civil, mining, and petroleum engineers who are interested in cavity expansion methods, the solutions presented in the book will also be of interest to students and researchers in the fields of applied mechanics and mechanical engineering. Cavity expansion analysis for the interpretation of cpt data in layered soils. The sizedependent pressure expansion response during quasistatic cavity expansions is analysed first by using the method outlined in section 3.
Cavity expansion methods in geomechanics 2000 edition, kindle edition. Cavity expansion in soil or rock is an important area in theoretical geomechanics because it provides a useful and simple tool for modelling many complex geotechnical problems. Zou jinfeng 1,2, luo heng 1, peng jianguo 2, an aijun 1, zhang jinhua 2. During continuous expansions of a cavity from a 0 to a, a a 0 reflects the cumulative deformation level. This paper focuses on a novel approach for the quasiplane strainsoftening problem of the cylindrical cavity expansion based on generalized hoekbrown failure criterion. Cavity expansion theory is a simple theory that has found many applications in. Cavity expansion methods in geomechanics ebook, 2000. Pdf cavity expansion methods in geomechanics diego.
May 09, 2012 use of this new equation provides an improved fit between theoretical prediction and experimental results compared with the existing equations based on rigidplastic models and cavity expansion models. Jun 03, 2016 as a major component of the total pull force, soil expansion prediction is also important. This study evaluates the dimensions required for selfpenetration of an idealized bioinspired probe consisting of a radially expanding shaft and a penetrating tip. Aalborg universitet interpretation of piezocones in silt, using cavity expansion and critical state methods bakmar, christian leblanc. The analytical method in geomechanics mcgill university. Geomechanics with more of a geotechnical engineering flavor followed, notably with works by ladanyi 1963, who was interested in cavity expansion in clays, and palmer 1972, who studied applications of cavity expansion analyses to the pressuremeter test. International journal for numerical and analytical methods in geomechanics 42 1. Sizedependent finite strain analysis of cavity expansion. Evaluation of selfpenetration potential of a bioinspired.
Because the intermediate principal stress is deformationdependent, the quasiplane strain problem is defined to implement the numerical solution of the intermediate principal stress. Sizedependent finite strain analysis of cavity expansion in. This paper presents an analytical solution for cavity expansion in thermoplastic soil considering non. In particular, it has been used widely to analyse problems relating to deep foundations. The pressuremeter test is one of the most important. Cavity expansion of a gradientdependent solid cylinder jidong zhao, daichao sheng, scott w.
Cavity expansion of a gradientdependent solid cylinder. Cavity expansion methods in geomechanics nhbs academic. Subsequently, the pdes are transformed into a system of first. Timoshenko and goodier 6 attribute the first application of the method to runge, who in 1908 used it for the solution of torsion problems. In situ testing in geomechanics download ebook pdf, epub.
Cavity expansion methods in geomechanics kindle edition by haisui yu. No mathematical theories can completely describe the com. In this paper, three cavity expansion solutions were used to predict soil expansion pressure acting upon the expander bursting head during static pipe bursting. Click download or read online button to get in situ testing in geomechanics book now. Cavity expansion methods in geomechanics haisui yu. Cavity expansion theory is a simple theory that has found many applications in geotechnical engineering.
Cavity expansion methods in geomechanics 2000, haisui yu. Analysis of cylindrical cavity expansion in anisotropic. The procedures that make use of cavity expansion theory in solving practical problems are termed cavi ty expansion methods. Cavity expansion analyses of crushable granular materials.
Although much research has been carried out in this field, all the major findings are reported in the form of reports. Although it is intended primarily as a reference book for civil, mining, and petroleum engineers who are interested in cavity expansion methods, the solutions presented in the book will also be of interest to students and researchers in the fields of applied mechanics and. Similarity solution for cavity expansion in thermoplastic. Use features like bookmarks, note taking and highlighting while reading cavity expansion methods in geomechanics. This book is the first attempt to summarize and present, in one volume, the major developments achieved to date in the field of cavity expansion theory and its applications in geomechanics 2 in stock cavity expansion methods in geomechanics quantity. Request this item to view in the librarys reading rooms using. Buy a discounted hardcover of cavity expansion methods in geomechanics online from australias leading online bookstore. Undrained cylindrical cavity expansion in a camclay medium 43 is, hence, 2. Buy cavity expansion methods in geomechanics 9780412799907. Cavity expansion methods in geomechanics by haisui yu. Predicting soil expansion force during static pipe. A parametric study is undertaken using axisymmetric cavity expansion theory to investigate the effect of soil. Cavity expansion methods in geomechanics book, 2000. Expansion of cavities in layered elastic system sayed.
Although it is intended primarily as a reference book for civil, mining, and petroleum engineers who are interested in cavity expansion methods. In particular, it has been used widely to analyse problems relating to deep foundations, in situ testing, underground excavation and tunnelling, and wellbore instability. Cylindrical cavity expansion in elastoplastic medium with a. International journal for numerical and analytical methods in geomechanics, 16 1 1992, pp. The nsw research award australian geomechanics society. The software is characterized by an intuitive interface and face every single geological problem in 2d. Cavity expansion methods in geomechanics haisui yu auth. The medium surrounding the cavity is assumed to consist of several layers, and each is idealized as a linear elastic solid. Undrained cylindrical cavity expansion in a camclay medium 41 4 undrained cylindrical cavity expansion in a camclay medium 4. This paper presents a comparison of the solutions for cavity expansion in cohesive frictional soils, which are modelled as elastic perfectly plastic materials obeying the mohr coulomb failure.
Elasticplastic solutions for expanding cavities embedded in two. Largedeformation analysis for cavity expansion in strainsoftening soil. The second application is for the hydromechanical response of an expanding cavity in crushable granular soil. Numerical and analytical methods in geomechanics published by john wiley. Prediction method for overconsolidation ratio of marine. Pdf geomechanics ii download full pdf book download. Sloan centre for geotechnical and materials modelling, school of engineering, the university of newcastle, nsw 2308, australia. Theoretical formulations to the problem of expansion of spherical and cylindrical cavities in a layered elastic system are presented. An analytical model dealing with the problem of an expanded cylindrical cavity in an elastoplastic medium is presented. In this case, the incremental velocity approach first used by hill 7 to analyze cavity expansion in tresca materials may be extended to derive a solution for limiting pressure of cavity expansion in mohr. Cavity expansion theory is concerned with the stress and displacement fields around cavities embedded in either linear or nonlinear media. Although it is intended primarily as a reference book for civil, mining and petroleum engineers who are interested in cavity expansion methods, the solutions presented in the book will also be of interest to students and researchers in the fields of applied mechanics and mechanical engineering. To facilitate applications and further development of cavity expansion theory, there is a need for the geotechnical community to have a single volume presentation of cavity expansion theory and its applications in solid and rock mechanics.
Tunnelpile interaction analysis using cavity expansion methods. A numerical shooting method, together with broydens iteration procedure, is developed to. International journal for numerical and analytical methods in geomechanics. Analytical solution of undrained cylindrical cavity expansion. Pdf comparison of solutions for cavity expansion in. Second, the governing equations for cavity expansion in crushable granulates are introduced, in which the state. Cavity expansion methods in geomechanics edition 1 by. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Cavity expansion methods in geomechanics yu, haisui. The development of an analytical cavity expansion method for application to geotechnical.
Analytical solution of undrained cylindrical cavity. Geostru geomechanics software software for rocks mechanics. The constitutive material is assumed to be weightless, homogeneous, and isotropic. Discrete element modelling of cavity expansion and. London wikipedia citation please see wikipedias template documentation for further citation fields that may be required. Download it once and read it on your kindle device, pc, phones or tablets. The ultimate expanding pressure is derived by the cavity expansion theory, and then, the expression of the cone tip resistance is determined.
Chaney hsaiyang fang 3 abstract various forms of analytical methods and models have been proposed in the literature to explain the behavior of a cavity in soil as it undergoes expansion into the surrounding medium. Booktopia cavity expansion methods in geomechanics by. A numerical approach for the quasiplane strainsoftening. Cavity expansion methods in geomechanics by haisui yu, 9780412799907, available at book depository with free delivery worldwide. In this case, the incremental velocity approach first used by hill 7 to analyze cavity expansion in tresca materials may be extended to derive a. Review of cavity expansion models in soil and its applications by nitin s. The 12 th international conference of international association for computer methods and advances in geomechanics publication date. As a major component of the total pull force, soil expansion prediction is also important. The development of an analytical cavity expansion method for.
Aalborg universitet interpretation of piezocones in silt. Spatial distribution of pressure expanding the cavity is uniform throughout the pressurecontrolled cavity expansion process and is a function of time only, regardless of the deforming shape of the cavity. A unified critical state model for geomaterials with an application to. Pdf cavity expansion analysis for the interpretation of. Pdf cavity expansion analysis for the interpretation of cpt. Cavity expansion problems are also of interest in poroelastic mod.
The paper demonstrates the role of the analytical method in geomechanics. Pdf download cavity expansion methods in geomechanics free. Solutions to the response parameters of cavity expansion stress, excess pore pressure, and displacement can then be obtained by solving the odes numerically using mathematical software. This site is like a library, use search box in the widget to get ebook that you want. Elasticplastic solutions for expanding cavities embedded in. Haisui yu cavity expansion theory is a simple theory that has found many applications in geotechnical engineering. Nottingham centre for geomechanics, university of nottingham, uk. Cavity expansion methods in geomechanics haisui yu springer.
Elasticplastic solutions for expanding cavities embedded in two different cohesivefrictional materials. Abstract the problem of cavity expansion from zero radius has no characteristic length and therefore possesses a similarity solution, in which the cavity pressure remains constant and the continuing deformation is geometrically selfsimilar. Pdf elasticplastic solutions for expanding cavities embedded in. Drained cavity expansion analysis with a unified state. Cavity expansion in strain hardening frictional soils under drained condition. This paper describes the simulation of cylindrical cavity expansion and pressuremeter testing of granular materials using the discrete element method dem. Geostru software among the most successful software worldwide highly advanced software products and services in the following fields. Read pile driving by numerical cavity expansion, international journal for numerical and analytical methods in geomechanics on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Booktopia has cavity expansion methods in geomechanics by haisui yu. School of civil engineering and architecture, central south university, changsha 410075, hunan, china. Cavity expansion methods in geomechanics semantic scholar. The method is the oldest among the numerical methods in geomechanics and was used even before the arrival of computers. The expanding process of the cptu probe penetrating into the soil can be considered as the onedimensional boundary value problem of the small cavity expansion in the geomechanics.
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