Unified Theory of Concrete Structures

Unified Theory of Concrete Structures develops an integrated theory that encompasses the various stress states experienced by both RC & PC structures under the various loading conditions of bending, axial load, shear and torsion. Upon synthesis, the new rational theories replace the many empirical formulas currently in use for shear, torsion and membrane stress. The unified theory is divided into six model components: a) the struts-and-ties model, b) the equilibrium (plasticity) truss model, c) the Bernoulli compatibility truss model, d) the Mohr compatibility truss model, e) the softened truss model, and f) the softened membrane model. Hsu presents the six models as rational tools for the solution of the four basic types of stress, focusing on the significance of their intrinsic consistencies and their inter-relationships. Because of its inherent rationality, this unified theory of reinforced concrete can serve as the basis for the formulation of a universal and international design code. * Includes an appendix and accompanying website hosting the authors' finite element program SCS along with instructions and examples * Offers comprehensive coverage of content ranging from fundamentals of flexure, shear and torsion all the way to non-linear finite element analysis and design of wall-type structures under earthquake loading. * Authored by world-leading experts on torsion and shear

Table of Contents:
About the Authors. Preface. Instructors' Guide. 1 Introduction. 1.1 Overview. 1.2 Structural Engineering. 1.3 Six Component Models of the Unified Theory. 1.4 Struts-and-ties Model. 2 Equilibrium (Plasticity) Truss Model. 2.1 Basic Equilibrium Equations. 2.2 Interaction Relationships. 2.3 ACI Shear and Torsion Provisions. 2.4 Comments on the Equilibrium (Plasticity) Truss Model. 3 Bending and Axial Loads. 3.1 Linear Bending Theory. 3.2 Nonlinear Bending Theory. 3.3 Combined Bending and Axial Load. 4 Fundamentals of Shear. 4.1 Stresses in 2-D Elements. 4.2 Strains in 2-D Elements. 4.3 Reinforced Concrete 2-D Elements. 5 Rotating Angle Shear Theories. 5.1 Stress Equilibrium of RC 2-D Elements. 5.2 Strain Compatibility of RC 2-D Elements. 5.3 Mohr Compatibility Truss Model (MCTM). 5.4 Rotating Angle Softened Truss Model (RA-STM). 5.5 Concluding Remarks. 6 Fixed Angle Shear Theories. 6.1 Softened Membrane Model (SMM). 6.2 Fixed Angle Softened Truss Model (FA-STM). 6.3 Cyclic Softened Membrane Model (CSMM). 7 Torsion. 7.1 Analysis of Torsion. 7.2 Design for Torsion. 8 Beams in Shear. 8.1 Plasticity Truss Model for Beam Analysis. 8.2 Compatibility Truss Model for Beam Analysis. 8.3 Shear Design of Prestressed Concrete I-beams. 9 Finite Element Modeling of Frames and Walls. 9.1 Overview. 9.2 Material Models for Concrete Structures. 9.3 1-D Fiber Model for Frames. 9.4 2-D CSMM Model for Walls. 9.5 Equation of Motion for Earthquake Loading. 9.6 Nonlinear Analysis Algorithm. 9.7 Nonlinear Finite Element Program SCS. 10 Application of Program SCS to Wall-type Structures. 10.1 RC Panels Under Static Load. 10.2 Prestresed Concrete Beams Under Static Load. 10.3 Framed Shear Walls under Reversed Cyclic Load. 10.4 Post-tensioned Precast Bridge Columns under Reversed Cyclic Load. 10.5 Framed Shear Walls under Shake Table Excitations. 10.6 A Seven-story Wall Building under Shake Table Excitations. Appendix. References. Index.

About the Author :
Thomas Hsu & Yi-Lung Mo, University of Houston, USA Thomas Hsu is Moores Professor of Civil Engineering in the department of civil and environmental engineering at the University of Houston. Professor Hsu has been Principal and Co-Principal Investigator on funded projects for over 30 years, and has received project funding amounting to over $3.5 million, including 14 grants from National Science Foundation totaling $2.2 million. He established the University of Houston's Structural Research Laboratory, which is widely recognized and has supported over thirty Ph. D., M. S., and post-doctoral students. His research work has formed the basis for the shear and torsion design provisions in the American concrete Institute Building Code. His current research interests are in concrete, concrete structures, and structural mechanics. He has won numerous awards for his teaching and research, and has authored? or edited 3 books on reinforced concrete. Yi-Lung Mo is Professor of Civil Engineering in the Department of Civil and Environmental Engineering at the University of Houston. His primary research interests are related to the behavior and design of reinforced/ pre-stressed concrete, steel, hybrid and composite structures subjected to seismic and blast loads. He has authored or edited 3 books on the topics of construction materials and concrete.