The Influence Of The Location Of Concrete Joints And Longitudinal Reinforcement On T-Beams At A Distance Of A Quarter Of The Span
The construction of safe and earthquake-resistant infrastructure is one of the main challenges in structural design in Indonesia, which is known as a country with a high level of seismic activity. In this context, T-beams as structural elements play an important role in supporting loads and maintaining the stability of buildings. Therefore, a deep understanding of the behaviour of T-beams, particularly concerning concrete joints and longitudinal reinforcement, is essential to ensure the safety and reliability of the structure. This research aims to explore the influence of the placement of concrete joints and longitudinal reinforcement on T-beams regarding strength and deflection, with a focus on joints located at a distance of 1/4 span[4][8]. The connection between old and new concrete often becomes a weak point in reinforced concrete structures, which can affect the overall performance of the beam. According to SNI 03-2847-2002, the design of reinforced concrete structures must consider the proper use of transverse and longitudinal reinforcement to achieve appropriate values of flexural, shear, and deflection[2]. This research will compare T-beams without joints to T-beams with joints at a distance of 1/4 span to identify differences in flexural strength, shear strength, and deflection behaviour. Thus, the research results are expected to make a significant contribution to the development of better and safer structural designs[6]. Through systematic laboratory testing, this research will analyse experimental data that includes measurements of maximum load, deflection, and crack patterns occurring in T-beams. The results of this research are expected not only to provide insights into the influence of joints on the performance of T-beams but also to offer practical recommendations for planners and project implementers in designing more efficient and dynamic load-resistant reinforced concrete structures, especially in earthquake-prone areas. Thus, this research contributes to efforts to enhance the safety and resilience of buildings in Indonesia.
