Abstract
In huge reinforced concrete structures, it is often difficult to distribute the reinforcing bars, especially at the connection regions, to keep the spacing between bars within the minimum acceptable limits as recommended in the global specifications standard, by using the common methods such as, overlapping or welding, therefore, a new method for bonding was introduced, using mechanical joints and electro fusion bonding method, and comparing these methods with the maximum strength of reinforcing bars without joints and the failure location within maximum strength limits outside the joints.
Highlights
While constructing structures with huge concrete frames, especially within the construction stage, the structural engineer faces some difficulties in applying the structural plans prepared by the designers based on the global specifications standard, because of the minimum limits for spacing between reinforcing bars
The solution is connecting and overlapping between the steel bars in different ways and different factors will affect this like the reinforced steel bar diameter, quantity of the reinforcement steel, grade of steel and high compressive strength of concrete
Procedure to produce the mechanical joint from the steel bars: Outside the structure the machine starts cleaning the bump in the reinforced steel in the area where the serrated part is wanted in an automatic way, Figure 10
Summary
While constructing structures with huge concrete frames, especially within the construction stage, the structural engineer faces some difficulties in applying the structural plans prepared by the designers based on the global specifications standard, because of the minimum limits for spacing between reinforcing bars. The constructing engineer and his technical team must follow other procedures than overlapping or welding such as mechanical joints or electro fusion bonding methods. The solution is connecting and overlapping between the steel bars in different ways and different factors will affect this like the reinforced steel bar diameter, quantity of the reinforcement steel, grade of steel and high compressive strength of concrete
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