SHEAR CAPACITY MODELING OF SELF- CONSOLIDATING CONCRETE BEAMS

Development of self-consolidating concrete, SCC is a very desirable achievement in the RC structures for overcoming problems associated with many problems such as congestions of steel reinforcement. This nonvibrating concrete is not affected by the skill of workers, and shape and amount of reinforcing bar arrangement of a structure. Due to high-fluidity and resisting power of reinforcing of SCC, it can be pumped longer distances. In this research, the finite element, F.E modeling of three SCC beams in shear while taking into account, the flexural tensile strength of concrete is performed and the results are compared with the available experimental tested reinforced SCC beams. The stirrups are located at 75 mm apart from the end of beams up to the loading point. The electrical strain gauges have been embedded on the stirrups and their strain readings are taken for every step of load increment. For modeling longitudinal steel bars and concrete, the 2-node and 8-node 3-D elements, are used respectively. The comparison of results obtained by two methods is indicated that a good satisfactory agreement is achieved.

کلیدواژه ها:

Self-consolidating concrete ، Shear capacity ، Finite element modeling ، Electrical strain gauges