Abstract
The implementation method of reinforced concrete construction has progressed very rapidly. This development aims to speed up time and reduce costs. One of the most widely used methods is the precast method, but the less popular precast method is used for simple storey buildings. Therefore, in this study the semi-precast method, which is easy to implement in a simple storey building, was presented. Parts of columns and beams were cast in place with different casting times. Therefore, the connection become non-monolithic. This study presented a comparison between the deflection and the static load capacity that can be received by the connection of reinforced concrete beam-column which is monolithically connected and non- monolithic. 3 sets of specimens were made to represent monolithic and non-monolithic specimens. The nonmonolithic specimens were made with 2 models, i.e. without and with a notch. The beam-column connections were tested experimentally and compared to the monolithic beam-column connection. The results showed that the notch on non-monolithic test specimens can increase the load capacity and reduce deflection compared to the specimen test without notch. The experimental results also showed that the strength and performance of structural non-monolithic beam-column connections were as good as those of monolithic beam-column joints.
Highlights
The method of implementation of reinforced concrete construction has progressed very rapidly
3.1 Load capacity Based on the result of the test, it was found that in the non-monolithic beam-column joint connection without notches, the maximum acceptable load capacity decreased compared to the monolithic connection
The non-monolithic connection that occurs between the beams and columns lead to decreased load capacity, stiffness, and structural ductility compared with monolithic
Summary
The method of implementation of reinforced concrete construction has progressed very rapidly. This study aims to improve the performance and strength of the non-monolithic beam-columns joint due to separate casting. The application of moving formwork method results in a non-monolithic connection This type of connection resembles a wet connection to a pre-cast system. The research of Ghayeb, et al.[5] showed that in the precast connections reinforced steel plate, displacement, shift ratio, and elastic range were higher when compared with monolithic joints This is seen from the value of tensile stress and high ductility. Strong Connection, when joints between precast elements still behave elastically during a strong earthquake This connection system is proven theoretically and experimentally has the strength and hardness as the monolithic concrete structure. Each condition of the beam columns relationship made 3 specimens
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