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M. Miyata+, M. Nakagawa# and G.G.W. Mustoe#

+Port and Harbour Research Institute, Structural Engineering Division, Ministry of Transport, Yokosuka, Japan
#Particulate Science and Technology Group, Division of Engineering, Colorado School of Mines, Golden, Colorado, United States of America

doi:10.4203/ccp.65.9.3

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M. Miyata, M. Nakagawa, G.G.W. Mustoe, "Design Considerations of Rubble Rock Foundations based on a Discrete Superquadric Particle Simulation Method", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 213-218, 2000. doi:10.4203/ccp.65.9.3

Abstract

We introduce a discrete element modeling suitable for assemblies of non-spherical particles to investigate issues concerning a design criterion of a rubble rock foundation. Uniform distribution of contact forces on the bottom of caisson assures moment balance desired for the criterion. The effects of surface roughness and particle shape on local rearrangement of the particles near the surface of the foundation, the effects of the local rearrangement on settlement characteristics of the foundation, and the evolution of the force transmission in response to the external vertical structural loading are the three issues which are investigated. A loading history of the caisson on the rubble rock foundation is modeled by a uniaxial compression test and simulated by two-dimensional Discrete Element Method (DEM). Non-circular particles are represented by superquadric functions. Some preliminary observations and discussions on the issues described above are given.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 65 FINITE ELEMENTS: TECHNIQUES AND DEVELOPMENTS Edited by: B.H.V. Topping Paper IX.3 Design Considerations of Rubble Rock Foundations based on a Discrete Superquadric Particle Simulation Method M. Miyata+, M. Nakagawa# and G.G.W. Mustoe# +Port and Harbour Research Institute, Structural Engineering Division, Ministry of Transport, Yokosuka, Japan #Particulate Science and Technology Group, Division of Engineering, Colorado School of Mines, Golden, Colorado, United States of America doi:10.4203/ccp.65.9.3 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Miyata, M. Nakagawa, G.G.W. Mustoe, "Design Considerations of Rubble Rock Foundations based on a Discrete Superquadric Particle Simulation Method", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 213-218, 2000. doi:10.4203/ccp.65.9.3 Abstract We introduce a discrete element modeling suitable for assemblies of non-spherical particles to investigate issues concerning a design criterion of a rubble rock foundation. Uniform distribution of contact forces on the bottom of caisson assures moment balance desired for the criterion. The effects of surface roughness and particle shape on local rearrangement of the particles near the surface of the foundation, the effects of the local rearrangement on settlement characteristics of the foundation, and the evolution of the force transmission in response to the external vertical structural loading are the three issues which are investigated. A loading history of the caisson on the rubble rock foundation is modeled by a uniaxial compression test and simulated by two-dimensional Discrete Element Method (DEM). Non-circular particles are represented by superquadric functions. Some preliminary observations and discussions on the issues described above are given. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £80 +P&P)
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