Composite Multiscale Mechanics For Composite
Enhanced Concrete Structures
Author(s)
C. C. Chamis & P. K. Gotsis
Abstract
A new and effective method is described for designing composites to repair
damage or enhance the overload strength of concrete infrastructures. The method
is based on composite mechanics, which is available in computer codes. It is
used to simulate structural sections made from reinforced concrete, which are
typical in infrastructure, as well as to select reinforced concrete structures. The
structural sections are represented by a number of layers through the thickness
where different layers are used in concrete, and for the composite. The reinforced
concrete structures are represented with finite elements where the element
stiffness parameters are from the structural sections, which are represented by
composite mechanics. The load carrying capability of the structure is determined
by progressive structural fractural. Results show improvements of up to 40% for
damage and for overload enhancement with relatively small laminate thickness
for the structural sections and up to three times for the composite enhanced select
structures (arches and domes).
Keywords: arches, domes, finite element, composite mechanics, displacements,
stresses, buckling modes, vibration modes.
1 Introduction
Reinforced concrete is widely used in the construction industry. Concrete tends
to crack, chip and be damaged as a result of inadvertent loads or overloads that
may not have been accounted for in the initial design. The damage in concrete
structures may extend to a state where the safety of that structure becomes a
major concern. Recently, considerable effort has been expended on repairing
damaged or upgrading concrete structures by using fiber-reinforced composites.
Keywords
arches, domes, finite element, composite mechanics, displacements,stresses, buckling modes, vibration modes.
Related Book
Other papers in this volume
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