# US 10,119,275 B2 · Flat component, shear force reinforcing element, and reinforced concrete/prestressed concrete component with a shear force reinforcement of such shear force reinforcing elements > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,275 B2 - Document ID: US10119275B2 - Status: Granted - Kind: B2 - Application number: 15/307,829 - Filed: 2015-04-29 - Published: 2017-07-20 - Granted: 2018-11-06 - Earliest claimed: 2014-04-30 - Assignees: Technische Hochschule Mittelhessen - Applicants: Technische Hochschule Mittelhessen - Inventors: Gerd Günther - Web page: https://patentgrep.com/patent/US10119275B2 ## CPC - E04C 5/06: of high bending resistance, i.e. of essentially three-dimensional [3D] extent, e.g. lattice girders {(anchorage devices specially adapted for balconies E04B1/0038; supporting devices for connector reinforcing rods for concrete walls E04G21/125)} - E04B 5/32: Floor structures wholly cast in situ with or without form units or reinforcements - E04C 5/0645: {Shear reinforcements, e.g. shearheads for floor slabs} - E04C 5/08: Members specially adapted to be used in prestressed constructions {(production of reinforced objects in general B28B23/00; prestressed structures produced in situ E04G21/12)} - E04C 5/163: {the reinforcements running in one single direction} - E04C 5/166: {the reinforcements running in different directions} - E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) ## Abstract The invention relates to L-shaped sheet metal parts 21 with an angled longitudinal recess 23 as well as a reinforced concrete/prestressed concrete component with at least one upper and at least one lower longitudinal reinforcement layer and a shear force reinforcement guided in its dimension over the uppermost and the lowermost longitudinal reinforcement, which is formed from the L-shaped sheet metal parts 21 according to the invention with stirrups 30 fastened in the longitudinal recess 23. The reinforced concrete/prestressed concrete component according to the invention is suitable for increasing the punching shear resistance in the region of slab columns of flat slabs. ## Claims ### Claim 1 A flat component of metal configured to provide a shear force reinforcing element (Q) and suitable for mounting a stirrup (30) thereto, comprising a lower section, configured for connection with a lower longitudinal reinforcement of a reinforced or prestressed concrete component, wherein the flat component has an angled longitudinal recess (23) ending in a fastening region (BF) and having a feed channel (S) connected thereto and opening to a vertical side edge or an upper horizontal edge of the flat component, wherein the feed channel has a feed angle ζ of between 10° to 120° to the horizontal and the fastening region (BF) is either horizontal or slightly inclined upwards as it extends away from the feed channel and toward a vertical centerline (M) of the flat component, and wherein the feed channel (S) is straight or arcuate and terminates in an opening (29) capable of feeding a stirrup arch (34), and further including a first recess (25a) on a lower edge of the feed channel (S) adjacent the opening (29) and a second (26a) recess on an outer edge of the flat component adjacent the opening (29), the two recesses opening generally in opposite directions so as to enable mounting a clip plate part (24a) for securing the stirrup (30) in the fastening region (BF). ### Claim 2 (depends on 1) The flat component according to claim 1, wherein the feed angle ζ comprises a range of 10° to 110°. ### Claim 3 (depends on 1) The flat component according to claim 1, wherein the feed angle ζ comprises a range of 10° to 80°. ### Claim 4 (depends on 1) The flat component according to claim 1, wherein the feed angle ζ comprises a range of 80° to 110°. ### Claim 5 (depends on 1) The flat component according to claim 1, wherein the feed angle ζ comprises a range of 40° to 50°. ### Claim 6 (depends on 1) The flat component according to claim 1, wherein the feed channel (S) and the fastening region (BF) both have a height of about 8 mm, so that a stirrup (30) having a nominal diameter of 6 mm is freely movable in the angled longitudinal recess (23). ### Claim 7 (depends on 1) The flat component according to claim 1, wherein the fastening region (BF) has an upper recess with a height of 1 mm or a slightly inclination which rises by about 1 mm as it extends in the direction of the center line (M) which supports the fixing of the arches (34). ### Claim 8 (depends on 1) The flat component according to claim 1, wherein the angled longitudinal recess (23) has a depth T=(30±1) mm and the feed channel (S) has a feed angle ζ=45° and a length of (16±1) mm. ### Claim 9 (depends on 1) The flat component according to claim 1, wherein the lower section has a right-angled bend (40). ### Claim 10 (depends on 1) The flat component according to claim 1, wherein the flat component is made of structural steel. ### Claim 11 A shear force reinforcing element (Q) for a reinforced or prestressed concrete component, comprising: a flat component of metal configured to provide a shear force reinforcing element (Q) and suitable for mounting a stirrup (30) thereto, comprising a lower section, configured for connection with a lower longitudinal reinforcement of a reinforced or prestressed concrete component, wherein the flat component has an angled longitudinal recess (23) ending in a fastening region (BF) and having a feed channel (S) connected thereto and opening to a vertical side edge or an upper horizontal edge of the flat component, wherein the feed channel has a feed angle ζ of between 10° to 120° to the horizontal and the fastening region (BF) is either horizontal or slightly inclined upwards as it extends away from the feed channel and toward a vertical centerline (M) of the flat component; and at least one stirrup (30) fastened to the flat component. ### Claim 12 (depends on 11) A shear force reinforcement element (Q) according to claim 11, wherein a stirrup length HB of the at least one stirrup (30), with respect to a minimum stirrup length hB equal to the distance from an upper edge of the fastening region BF recess to the upper edge of an uppermost longitudinal reinforcement layer to which the shear force reinforcing element (Q) mounts plus twice a nominal diameter of the stirrup (30), satisfies the condition hB