Ateral Force Resistance For Shell Foundation
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Lateral Force Resistance for Shell Foundation
Shell foundation has been increasingly used around the world as an economic alternative to the traditional flat foundation. It provides higher bearing capacity and experience less settlement as compared to its counterpart flat foundation, these beside its high resistance to lateral pressure. The objective of this thesis is to highlight shell foundation superiorities in resisting horizontal loading and accordingly seismic condition. A comprehensive analytical and numerical investigation were conducted. Analytically, a MATLAB code was generated to calculate the lateral resistance for shell and flat foundations. Numerically, a 2-D finite-element model was developed to examine the governing parameters affecting soil-shell structure interaction, using the commercial software "PLAXIS". In this analysis the soil was modeled by the Mohr-Coulomb failure criteria, and the elastic perfectly plastic model. Mesh deformations, displacement vectors and failure points diagrams are presented. The results of this study indicated that shell foundations are superior to resist higher lateral forces than the flat foundations, which may advance its use in seismic zones.
NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures
The 2003 edition of the NEHRP Recommended Provisions contains several significant changes, including: a reformatting to improve its usability; introduction of a simplified design procedure, an updating of the seismic design maps and how they are presented; a modification in the redundancy factor; the addition of ultimate strength design provisions for foundations; the addition of several new structural systems, including buckling restrained braced frames and steel plate shear walls; structures with damping systems has been moved from an appendix to a new chapter; and inclusion of new or updated material industry reference standards for steel, concrete, masonry, and wood.
Rock-socketed Shafts for Highway Structure Foundations
Author: John P. Turner
language: en
Publisher: Transportation Research Board
Release Date: 2006
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 360: Rock-Socketed Shafts for Highway Structure Foundations explores current practices pertaining to each step of the design process, along with the limitations; identifies emerging and promising technologies; examines the principal challenges in advancing the state of the practice; and investigates future developments and potential improvements in the use and design of rock-socketed shafts.