Changsha DLADTO Rebar Splice Co., Ltd

In the field of construction and engineering, ensuring structural stability is of paramount importance. One crucial aspect of achieving this is through the implementation of reliable and efficient   mechanical connections . In this blog post, we will explore the significance of mechanical connection, specifically focusing on the application of mechanical couplers. What is a Mechanical Connection? A mechanical connection refers to the joining of two or more structural elements using mechanical means. This method significantly enhances the load-bearing capacity and overall stability of the structure. A well-designed mechanical connection ensures a secure and rigid coupling, reducing the risk of structural failure. The Role of Mechanical Couplers: Mechanical couplers are an essential component of mechanical connections. These devices are specifically engineered to provide a strong and durable joint between reinforcing bars or steel components. By using mechanical couplers, the need fo...

Although the advantages of   mechanical splices   are well recognized, a major concern has been their high cost for applications where the codes permit the use of lap splices. But is the perception that mechanical splices cost more than lap splices a reality? By using couplers, contractors can be more cost efficient, able to achieve from 20-50% of cost savings compared to lap splicing. Apart from that, there are many other savings which can be anticipated such as; Reduction no. of joints 6 meters length will be most ideal for joining and this would result in reduction of no. of laps by, Assuming height of building: 100 metres Typical floor height: 3.2 metres No. of laps: 100 / 3.2 = 31 laps No. of coupler joints: 100 / 6 = 16 joints Therefore reduction in no. of laps: [(31-16)/31] x 100% = 48% Minimal wastages of HTDBs Assuming floor height of 3.2m and lap length of 1.275m Length of steel bar per floor is : 3.2m + 1.275m = 4.475m For a 12metres steel bar, two nos of 4.475metre...

The   mechanical connection   methods of steel bars include: ribbed steel sleeve extrusion connection, steel bar taper thread connection and steel bar equal-strength thread sleeve connection. 1. Sleeve extrusion connection joint: the joint formed by the plastic deformation of the steel sleeve of the connecting piece and the tight bite of the ribbed steel bar through extrusion force. 2. Tapered thread connection joint: a joint formed by the special tapered thread at the end of the steel bar and the tapered thread of the connecting piece. 3. Equal-strength straight thread connection joints: The quality of the joints is stable and reliable, and the connection strength is high, which can be compared with the sleeve extrusion connection joints, and it also has the characteristics of convenient and fast construction of the tapered thread joints. Changsha DLADTO Rebar Splice Co., Ltd  as a division of  ADTO Group . We are a professional rebar coupler producer, we have been ...

1. The joint should be set at less stress place of steel bar. Two joints should not be set in a steel bar. The joints of longitudinally stressed steel bars in the same reinforcement members should be staggered from each other. 2. It is strictly forbidden to use overlapping joints diameter over 16mm steel bars, which should take welded connection or  mechanical connection . Illustrate: 1. Lap joint connection: The lap joint length should meet the design and specification requirements, and the adjacent steel bar joints should be staggered by 50%; the joint stagger height should be 1.3 times over the lap joint length. 2. Mechanical connection: the finished concrete surface of the joint should over 50cm, and the joints of adjacent steel bars should be staggered by 50%; the height of joint stagger should not be less than 35d. 3. Welding connection: the finished concrete surface of the joint should not be less than 50cm, and the adjacent steel bar joints should be staggered by 50%; the h...

Types of rebar connection: binding, welding, mechanical connection. 1. Binding and overlapping: the overlapping of steel bar is tie two steel bars with wire bindling. The connection method is suitable for the connection of steel bars with smaller diameters. It is used for reinforcement mesh in concrete, the warp and weft are evenly arranged. 2. Welding connection: welding connection of steel bars is divided into three types: arc welding, electroslag pressure welding and flash butt welding. Each type of welding must be sent for trial welding. In principle, the test welding problem requires all welding specifications and types used in this project, and each welder must make a set of test pieces. 3. Mechanical connection: mechanical connection generally refers to the  rebar sleeve  connection, which is mostly used for wall columns and beams. It is to process the end of the steel bar into a straight thread by rolling process, and connect the two steel bars with rebar coupler.

There is no specific standard for the length of   rebar coupler , the JGJ107-2016 "Technical Regulations for Mechanical Connection of Steel Bars" also does not clearly stipulate the length and outer diameter of rebar coupler. The JG/T163--2013 (Technical Regulations for Mechanical Connection of Reinforced Bars) specified the yield and outer diameter of rebar coupler, and the small size table of standard cylindrical straight threaded sleeves made of No. 45 steel material is supplemented, the length of the steel bar sleeve produced by it is: 16:40mm, 18:45mm, 20:50mm-55mm, 25:60mm, 28:70mm, 32:75mm. The above is the lenght requirement of rebar coupler, if you interest in other topic of rebar coupler, welcome to email us for your advice.

Mechanical connection   processes of steel bars: upsetting straight thread coupler connection and rolling straight thread connection. Steel bar upsetting straight thread coupler connection The upsetting straight thread coupler connection is to upset the end of the steel bar and cut it into a straight thread, then use a sleeve with a straight thread to tighten the steel bar at both ends. Steel bar rolling straight thread coupler connection Steel bar rolling straight thread coupler connection is utilizes the characteristics of plastic deformation of metal materials, cooling and hardening to enhance the strength of metal materials, so that the joint and the base metal are equally strong. According to the rolling straight thread forming method, it can be divided into three types: direct rolling thread, extruded rib rolling thread, and stripped rib rolling thread.

Mechanical connection  processes of steel bars: extrusion connection and taper thread sleeve connection. Rebar coupler extrusion connection The extrusion connection of ribbed steel bar sleeve is to insert two steel bars to be connected into the sleeve, and squeeze the steel sleeve along the radial direction with the extrusion connection equipment, so that the deformed steel sleeve and the longitudinal and transverse ribs of the connected steel bar are produced. A method of connecting steel bars that are integrated as a whole. This kind of joint has good quality stability and can be as strong as the base metal, but the operator has lots work, and sometimes it may cause the hydraulic oil contaminates the steel bar, and the composite cost is high. Rebar extrusion connection requires a minimum center-to-center spacing of 60mm. Rebar taper thread sleeve connection Rebar taper thread sleeve connection is a steel bar connection method in which the ends of two steel bars are made of tapere...

Both straight thread rebar coupler and   cold extrusion rebar coupler   are steel mechanical connection. The cold extrusion rebar coupler is deformation connection after the sleeve is extruded, and it bite the steel bar through cold plastic deformation to form a plum-blossom toothed sleeve cold-pressed joint. Its strength exceeds that of the base metal. And the reliability and plasticity are better than electric welded joints. Advantages (1) The performance of the joint is reliable and it is less affected by environmental and human operating factors. (2) The operation is simple and easy, and the opertator can take up the operation after fast training. (3) The speed of deformation connection is 3 to 5 times faster than electric welding and it takes only 3 minutes to connect a 32 joint.