Скачать или смотреть Mechanical Splice is a mechanical piece to create a connection between two rebars

What is a coupling?
(Mechanical Splice) is a mechanical piece to create a connection between two rebars that allows the reinforcement in the joint area to behave like a one-piece rebar, a type of connection that connects the rebars face to face. Provides many benefits of integrated reinforcement.
Important Note: From a structural point of view, the most important advantage of using a coupler is to ensure the path of force within the reinforcing mesh, regardless of the condition and quality of concrete.
The main advantages of the coupler:
Ease of use, reliability, structural integrity, and minimal rebar congestion are the advantages of using a mechanical connection system.
The mechanical patching system meets the needs of its contacts under traction, compression and cyclic loading. Mechanical connection is the most optimal type of rebar connection and satisfies all the rules and regulations of national and international regulations.
A large number of engineers emphasize the superiority of mechanical connection over overlap. They believe that mechanical bonding creates a cohesive structure that overlap is by no means capable of creating.
Mechanical couplings are much more reliable than overlays because they do not depend on concrete to transfer loads.
Mechanical patches (coupler) create more integration in the structure. These joints are far more resistant to overlap in the event of human error, seismic loads, and other natural disasters.
According to the design regulations, the coupler concrete (mechanical patch) should provide more strength than the usual overlap length. This value is typically around 125% to 150% of the overlap resistance.
Working with small size reinforcements increases the dimensions of the column so that it can accommodate more reinforcement. The use of a coupler (mechanical patch) allows the use of larger sizes of reinforcement in the column with smaller dimensions and at the same time minimizes the amount of congestion in the column. This results in cost-effective design and maximum use of space in the plan.
Installation of the coupler is quick and easy and does not require a skilled worker to do so.
Mechanical connection significantly reduces costs by reducing the cost of workers' wages and increasing the speed of progress.
The end coupler prevents congestion at the junction of beams and columns and facilitates the placement of rebars in the network.
Solve the problem of rebar congestion with coupler:
Overlap connection increases the amount of rebar congestion at the junction by 2 times as much as usual. This is the main reason why stone grains get stuck and create holes in concrete. Couplings (mechanical patches) prevent this congestion and reduce the size of the column, resulting in significant economic savings in the project.
Iran's concrete regulations specify a ratio of 6% steel to concrete for the design of concrete columns. Due to the congestion of reinforcement in the overlap area, it is almost impossible to design a balance ratio with a cover connection. However, the coupler (mechanical patch) allows the designer to achieve the ideal concrete cross-section with a steel-to-concrete ratio by removing the additional rebars in the patch area.
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