Joints for rebars with different diameters made of steel rods hexagonal

摘要

The claimed invention relates to the field of construction of buildings and structures, consisting of a liquid concrete constructions, and is intended for use in the manufacture of reinforcement structures. In the construction of buildings and structures necessary durability under static and dynamic loads is provided mainly due to metal frames in reinforced concrete structures. These frames consist of rebars, size, number and location of which in the amount of reinforced concrete structures are determined by calculations at the design stage of buildings and structures, and the calculations are based on projected static and dynamic loads. In the construction of scaffolds before pouring the concrete there is a need compound rebars. The prior art devices of the claimed analogs (patents RU 133163 and RU 82 465). The main disadvantages of these analogues of the proposed technical solution consists in the limited strength rods compound. Coupling strength provided by the rods compound is defined by the main geometric parameters of the elements forming the structure. Such parameters include the diameters of the rods to be connected, the coupling length, the depth of tapered apertures with tapered thread, also called thread coverage. The technical problem solved by the claimed utility model is a significant improvement of bonding strength reinforcing bars of different diameters provided by coupling, made of steel rod hexagonal section. Said technical problem is solved by choosing the optimum ratio of geometrical parameters of the coupling depending on the diameters of the rods to be connected.