Bewehrungsstöße

Bewehrungsstöße, or reinforcement splices, are crucial elements in reinforced concrete construction. They are used to connect individual reinforcing bars (rebar) when a single bar is not long enough to span the required length. This ensures the continuous transfer of tensile forces throughout the concrete structure. Without proper splices, the integrity of the reinforced concrete could be compromised, leading to premature failure.

There are several common types of Bewehrungsstöße. Lapping is one of the simplest methods, where two bars are overlapped and held together. The length of the lap is determined by design codes and depends on factors such as concrete strength, bar diameter, and the type of stress. Another method is mechanical splicing, which uses specialized connectors to join bars. These connectors can be threaded sleeves, couplers, or other devices that create a strong, reliable connection. Welding is also used in some applications, particularly for smaller diameter bars or in situations where lapping or mechanical splicing is impractical.

The selection of the appropriate Bewehrungsstoß type depends on various factors, including the structural requirements, available space, construction schedule, and cost considerations. Engineers must carefully design and specify the type and location of splices to meet the load-bearing demands of the structure. Proper execution of Bewehrungsstöße during construction is essential to achieve the intended structural performance and long-term durability of the concrete element.