Analysing Numerical Modelling Behaviour of Reinforced Concrete Deep Beam with Strut-and-Tie Model

This chapter is concerned with strut-and-tie models (STMs) behaviour as derived from the truss analogy models. STMs are often used to analyze and model a reinforced concrete deep beam structure for internal force distribution from the point load to the supports that carries bending, shearing and torque forces in disturbed regions (D-regions). D-region on structural elements can be more easily analysed where the stress situation occurs idealized as the strut of the concrete, the tie of steel and the nodal area, the action of the strut and tie causes an increase in the strength of the high-reinforced concrete beam structure. Numerical modelling was conducted on the deep beam by compressive loading simulation until its collapse. ANSYS 3D half-span symmetrical Strut-and Tie model deep beams modeling have been done to determine deflection, cracking and destruction of ultimate load, model variation of two diagonal reinforcements, diagonal symmetrical truss reinforcement and diagonal frame truss reinforcement. The variation shape of STMs have been conducted to determine the ultimate bending capacity, load-deformation, ductility, stress behavior, strain, and fracture pattern. The result of numerical modelling shows the signifanct variation of STMs deep beam behaviour.