In the last decades, ductility of the joints becomes one of the most relevant issues in seismic design. Experiments show that the joints ductility is enhanced using additional transverse reinforcements. Thus, the design codes set requirements to attain the required level of ductility of joints including high amount of transverse reinforcement. However, the assemblage of many types of reinforcements causes implementations difficulties. This paper focuses on improving ductility of exterior beam-column joint (BCJ) using ultra-high performance concrete (UHPC) while dispensing the transverse reinforcements in the joint to overcome the implementations difficulties. A 3-D non-linear model using the finite element program ABAQUS is constructed and validated using published experimental data. After that, the model is used to conduct a parametric study that includes the main parameters affecting the behavior which include the beam to column depth ratio, the axial load ratio, and the longitudinal reinforcement ratio in column. The results of the parametric study are used to compare the behavior of sway-special joints and the joints strengthened with UHPC in terms of strength, ductility and the mode of failure. The results assure the ability of UHPC-strengthened joints to attain the required level of ductility and strength when compared to SMRF.

accepted, revised before publishing 

Title

Mohammad A. Samaaneh

Publisher

Elsevier

Publisher Country

Netherlands

Indexing

Scopus

Impact Factor

2.983

Publication Type

Both (Printed and Online)

Volume

36

Year

2022

Pages

979-996