Publisher's Synopsis
Concrete is assumed as a linear elastic material for stress states which lie inside the initial yield surface. Concrete shows a low tensile strength in comparison to the compressive strength, which grows only less proportionally with increasing compressive strength; at the same time, the brittleness increases. The modeling of reinforced concrete structures has taken advantage of the increasing progress on Computational Mechanics, in such way that complex phenomena, such as cracking and crushing, creep, reinforcement yielding, steel-concrete bond loss, can be modeled in a reasonable realistic way, using the proper set of numerical and computational resources. This volume deals with the finite element analysis of the bond-slip between reinforcing steel and concrete; it integrates state of the art research and reviews which deals with the finite element analysis of the monotonic behavior of reinforced concrete beams, slabs and beam-column joint sub assemblages. This volume provides information of the tensile capacity enhancement of SFRC made of both brick and stone which will be helpful for the construction industry to introduce this engineering material in earthquake design. The FEM analysis presented in this volume uses a combination of resources where the material behavior of concrete is described used to represent steel inside the concrete and take into account the effect of bond-slip. Further, it presents the finite element (FE) analysis and modelling of square concrete-filled steel tube (CFST) members subjected to a flexural load. With the development of finite element method, together with tremendous increases in computing power and convenience, today it is possible to understand structural behavior with levels of accuracy. This was in fact the beyond of imagination before the computer age. Concrete is known for its good compressive strength and low tensile strength. Researchers are continuously striving to improve its tensile capacity, as it is being the most accepted composite used for all structural applications. Hence, shear behavior of high strength concrete beams without web reinforcement, varying shear span to depth ratio and volume fraction of fibers is presented. Recent developments in computer technology have made possible the use of finite element methods for 3D modeling and analysis of reinforced concrete structures. In eighth chapter, the failure behavior and crack formation of an R/C frame under monotonic and reversed-cyclic lateral loading are studied by 3D nonlinear finite element analysis using ANSYS software. Presenting a unified approach for the available mathematical models of concrete, linking them to finite element analysis and to computer programs in which special provisions are made for concrete, this volume shows that the effects of tension-stiffening and bond-slip are very important and should always be included in finite element models of the response of reinforced concrete members.
