ABSTRACT
Basic approaches for design of FRP structural members include allowable stress design (ASD), limit state design (LSD), load and resistance factor design (LRFD), and performance-based design (PBD). All of these approaches require structural analysis for the designed section, member, or structure. FRP composite materials are brittle and exhibit little or no ductility prior to failure. FRP materials also have higher strength-to-stiffness ratio compared to steel or concrete. This implies that when the strength requirements are satisfied for a design, the requirements for stiffness may not be fulfilled. FRP structural members usually exhibit low resistance in the wall’s through-thickness direction. In an FRP structure, failure may occur locally due to local bucking or wrinkling or due to local damages such as local delamination or cracking. The design of FRP structures shall take into account the basic material characteristics of FRP composites by ensuring that a serviceability limit state is reached prior to its ultimate limit state for the mode of failure being considered or by providing reasonable and adequate warning of failure prior to reaching an ultimate limit state. This
Introduction .................................................................................................................................... 131 Coordinate Systems ....................................................................................................................... 132
Constitutive Behavior of FRP Composite Materials ................................................................. 133 Equivalent Single-Layer Lamination Theories for FRP Structures .......................................... 134 All-Composite FRP Structural Members in Civil Engineering and Their Material Properties .... 135
Analysis of FRP Beams ................................................................................................................. 135 Structural Analysis of FRP Beams ............................................................................................ 136
Axial Tensile Load ............................................................................................................... 136 Axial Compressive Load ...................................................................................................... 137 Transverse Load (Bending) .................................................................................................. 142 Combined Axial and Transverse Loads ................................................................................ 144 Vibration ............................................................................................................................... 144
Analysis of FRP Plates and Panels ................................................................................................ 145 Introduction ............................................................................................................................... 145 Analysis of FRP Plates .............................................................................................................. 146
Bending of FRP Plates ......................................................................................................... 146 Buckling and Vibration of FRP Plates .................................................................................. 150
Analysis of FRP Panels ............................................................................................................. 151 Hygrothermal Effects ..................................................................................................................... 151 Strength of FRP Structural Members: Large-Scale FRP Structures .............................................. 153 References ...................................................................................................................................... 153
requires a good understanding of the mechanical and structural behavior of the FRP structure subjected to the design loads and service environment. This chapter provides bases for the mechanical and structural analysis of FRP structural members, including the determination of deformation, stress, strain, stability analysis (buckling analysis), vibration, and delamination.
