Reinforcing Bar Couplers for the Construction Industry
1 / 32ページ

UILDING PRODUCTS

Reinforcing Bar Couplers Simplify the design and construction of concrete Lapped joints are not always an appropriate means of connecting reinforcing bars. The use of laps can be time consuming in terms of design and installation and can lead to greater congestion within the concrete because of the increased amount of rebar used. the concrete could significantly affect the performance of the joint. The strength of a mechanical splice is independent of the concrete in which it is located and will retain its strength despite loss of cover as a result of impact damage or seismic event. Ancon...

Comprehensive Range Eurocode 2 compliant reinforcement required Dedicated sales Available through major approved distributors Technical approval Tapered Thread Couplers BUILDING PRODUCTS

Reinforcing Bar Couplers For many years the use of mechanical couplers to join reinforcing bars has been regarded as a means of reducing the use of long bars. Engineers and contractors now recognise the benefits of using couplers to accelerate the speed of construction, increase productivity and simplify design details. Sales Support Ancon’s ‘Products for Structural Concrete’ Division provides assistance for clients who require products which are used in structural concrete construction. These include, but are not restricted to, reinforcing bar couplers, reinforcement continuity systems,...

Coupler Selection The four types of Ancon reinforcing bar couplers require different fixing methods. This, together with the quantity will determine which is the most particular situation. Tapered Thread The Tapered Thread coupler is designed to suit the majority of applications which require the joining of reinforcing bars. The ends of the rebar are cut square and a tapered thread is cut onto the bar to suit the tapered thread coupler. The sleeve is tightened onto the threaded bar end using a calibrated torque wrench. Tapered Thread Standard Tapered Thread Positional Tapered Thread...

Reinforcing Bar Couplers Coupler Selection Range Type Tapered Thread Standard Positional Transition Weldable Bar Dia. (mm) 12-50 12-50 12-50 12-50 12-50 12-50 12-50 12-50 12-50 12-50 12-50 10-40 10-40 10-40 10-40 Bar End Prep Threaded Threaded Threaded Threaded Threaded Threaded Threaded Threaded Threaded Threaded Threaded No No No No Bar Rotation Yes No Yes Yes Yes Yes Limited No Yes Limited No No No No No Installation Torque Wrench Wrench Wrench Wrench or Nut Runner Method Minimum Full Strength up to 575N/mm2 Full Strength up to 650N/mm2 Full Strength up to 650N/mm2 Full Strength up to...

Typical Coupler Application Guide The following table provides a guide when selecting the most appropriate couplers for specific applications. Recommendations are based upon typical usage. Please contact Ancon for further assistance on the correct selection and specification of couplers. Application Wall to slab connection Wall to pre-cast beam connection Column construction Extension / repairs to existing structures Pre-cast element to pre-cast element connection Closing of access openings Rebar cage pre-fabrication Hook bars to pile connection Fatigue applications Bar end terminations...

Reinforcing Bar Couplers Tapered Thread The Ancon range of Tapered Thread couplers is designed to suit the majority of applications which call for the joining of reinforcing bars. Available to suit bar sizes 12mm to 50mm, the couplers are installed quickly and easily on site without the need for specially trained personnel or specialised, expensive machinery. The compact design of each coupler ensures suitability for use in confined situations where space is restricted or where the loss of cover must be minimised. The couplers are normally supplied fitted to the end of threaded bar,...

Installation Tapered Thread Standard Series 1 The coupler is normally supplied fixed to the reinforcing bar, ready to be installed and cast in concrete. Continue to screw the bar into the coupler until tight. After casting the concrete and when ready to extend, remove the plastic end cap from the coupler. Position the continuation bar in the sleeve and rotate the bar into the coupler. To ensure correct installation, tighten the joint to the specified torque using a calibrated torque wrench on the continuation bar. Tightening torques are shown in the table opposite.

Reinforcing Bar Couplers Positional Coupler The Ancon Tapered Thread Positional coupler is designed to be used in applications in which neither bar can be rotated. Having a degree of adjustability, the Positional coupler can also be used as a closer between two fixed bars. Installation Tapered Thread Positional Series 1 The Positional coupler comprises three components, a male section, a female section and a locking nut. The male component has an internal tapered thread and an extended external parallel thread. The female component has a parallel thread and a tapered thread, both of which...

Using a torque wrench tighten the male component on the continuation bar to the specified torque, whilst holding the continuation bar with a second wrench. Run the locknut along the threaded barrel of the male component to abut the female section. Using the torque wrench, tighten the locknut to the specified torque. Tightening torques are shown in the table opposite. At this point the groove in the parallel threaded section of the male component must be completely covered by the locknut. If any part of the groove is visible beyond the locknut, the degree of adjustability has been exceeded...

Reinforcing Bar Couplers Transition Coupler The Ancon Tapered Thread Transition coupler is used to join reinforcing bars of different diameters where one coupler can be rotated. With all the benefits of the Standard range, Transition couplers are designed to achieve failure loads greater than 115% of the characteristic strength of the smaller diameter grade 500 reinforcing bar. The Transition coupler comprises an internally threaded sleeve with two right hand threads both of which are tapered towards the middle of the coupler. The diameter of each thread corresponds to the appropriate bar...