ANALYSIS OF BOX-TYPE STRUCTURES.

Keywords: TRANSPORT AND ROAD RESEARCH LABORATORY, TRRL, ANALYSIS, METHODS, BRIDGES, PROGRESSION, PLATES, MODELS, THEORY, EQUATIONS, FLEXURE, COMBINED, VECTORS, DISPLACEMENT, STRUCTURES, GIRDERS, DECKS, MATRICES, MATRIX, ELEMENTS, PERSPEX, CALCULATIONS, MEMBRANES, ASSEMBLY, INTERNAL, TWO CELL, BOX, MULTI CELLULAR, STIFFNESS, EXPERIMENTS, MODELLING, EQUILIBRIUM, EQUIVALENT, ACTION, LOADS, FORCES