Evaluation of Member Contributions in Concrete Connections using the Digital Image Correlation Technique

Abstract

The Digital Image Correlation Technique (DICT) was recently proposed as an alternative instrumentation to conventional Linear Strain Conversion devices due to the superior characteristics of the former in accurately capturing the deformation in structures. In this research, the DICT was used to calculate the member contributions of slotted-beam column connections tested under quasi-static loading. The slottedbeam system is primarily used in the design of concrete structures prone to highmagnitude earthquake motions. It possesses exceptional minimal beam elongation and non-tearing action to the concrete slabs, and thus, maintains a rigid diaphragm of building floors. The detailed procedure of calculating the member contributions using the DICT method is outlined in this paper. Analysis results indicate the domination of beam flexural bending to the total drift with smaller contribution of the joint distortion and column bending.