iUP Publications Online
Home About IUP Magazines Journals Books Archives
     
Recommend    |    Subscriber Services    |    Feedback    |     Subscribe Online
 
The IUP Journal of Structural Engineering :
An Analysis of Hydrated Lime Included Fly Ash Concrete Based on SEM
:
:
:
:
:
:
:
:
:
 
 
 
 
 
 

The paper presents the numerical modeling of Reinforced Concrete (RC) exterior beam-column joint with core reinforcement detailing using ANSYS. An experimental study was conducted on exterior RC beam-column joints detailed in three categories, viz., IS: 456 (2000) as Reference Joint (RJ), IS: 13920 (1993) as Ductile Joint (DJ) and core reinforcements as Core Joint (CJ). They were casted and tested under static loading and the results were evaluated in terms of strength, ductility and stiffness degradation. The experimental investigation is validated with the analytical studies carried out by finite element models using ANSYS. The results indicate that the use of core reinforcement at the joints exhibits a better seismic performance compared to other joint configuration.

 
 

Beam-column joint is a crucial zone in Reinforced Concrete (RC) moment resisting frames. RC frames must perform satisfactorily under severe load conditions to withstand large lateral loads preferably without irreparable damage. RC structures are commonly designed to satisfy both serviceability and safety criteria. To ensure the serviceability requirement, prediction of cracking and estimation of deflection under service loads need to be considered. To meet safety or strength requirement, an accurate estimation of the ultimate load is essential, but it is also desirable to understand the load-deformation characteristics of the structure. In nonlinear finite element analysis, the total load applied to the model is divided into a series of load increments, called load steps. At completion of each load increment solution, the stiffness matrix of the model is adjusted using Newton-Raphson equilibrium iterations by the software itself, to reflect the nonlinear changes in the stiffness before proceeding to the next increment. For beam-column joint, the effect of geometric nonlinearity is negligible. The performance of beam-column joint under seismic conditions has been a research topic for many years. A number of experiments and analytical studies were reported in the literature.

 
 

Reference Joint (RJ), Ductile Joint (DJ), Core Joint (CJ), Numerical modeling, ANSYS13, Stiffness, Ductility