STRUCTURAL CORE OF THE THREE-DIMENSIONAL CONCRETE REINFORCING MAT AND METHOD OF ITS FABRICATION

摘要

The invention applies to the structural core of the three-dimensional concrete reinforcing mat consisting of distribution bars and load-bearing bars, where the distribution bars (1) of folded length equal to the width (W) of the mat, are throughout their length bent forming a meander consisting of a continuous row of incomplete equilateral trapezoids with slanted sides (h w), shorter bases (b) and imaginary longer bases (c). The equilateral trapezoids of the distribution bar (1) are laying in the same plane oriented alternately mutually opposite each other so, that slanted sides (h w) of each two opposing each other trapezoid s are of the same length and are identical. The straight load-bearing bars (2) of the structural core's length, are attached to meandrically bent distribution bars (1) into each corner-bend on inner side of their trapezoids. The distribution bars (1) and load-bearing bars (2 ) form together structural mat-core's longitudinal ribs (R) of regularly by 180.degree. alternating trapezoidal cross-sectional form. The m at based on this structural core is designated for its usage primarily as reinforcement of concrete structures and of miscellaneous precast concret e products used in construction of highrises, bridges and/or in underground structures of civil engineering, as well as for military purpose s, security installations and/or temporary structures, where this structural mat's core due to its formed longitudinal load-bearing ribs (R) would serve mainly without its combination with concrete as a steel structure, that is as a finished product.