Concrete member shear transfer bracket

Abstract

A structure is disclosed for mechanically coupling a new concrete member to an existing concrete member to enable transfer of loads such as shear loads from the existing wall to the new wall. In examples, the mechanical structure includes a base which may be affixed to the existing member by a connective interface. A top a segment of the structure is spaced from, and connected to, the base by a number of diagonal segments. The diagonal and top segments of the bracket embed within the new concrete member during fabrication of the new concrete to transfer loads from the existing to the new concrete. A number of such brackets, of varying configurations, may be used depending on the layout of the new and existing members, and the magnitude of the loads to be transferred.

What is claimed is: 
     
         1 . A structure for reinforcing an existing member with a new member, comprising:
 a base affixed to the existing member;   diagonal segments extending at an angle from the base; and   a top segment connected to each of the diagonal segments, wherein the base, diagonal segments and top segment are embedded in the new member.   
     
     
         2 . The structure of  claim 1 , further comprising a connective interface for connecting the base to the existing member. 
     
     
         3 . The structure of  claim 1 , wherein the diagonal segments are provided at an angle less than 90° off of the base. 
     
     
         4 . The structure of  claim 1 , wherein the base is wider than the diagonal segments. 
     
     
         5 . The structure of  claim 1 , wherein the base, diagonal segments and top segment define one or more openings in the structure. 
     
     
         6 . The structure of  claim 5 , further comprising steel rebar embedded within the new member and extending through the openings. 
     
     
         7 . A structure for reinforcing an existing member with a new member, comprising:
 a base affixed to the existing member;   diagonal segments extending from the base; and   a top segment connected to each of the diagonal segments, the diagonal segments spaced from each other to define one or more enclosed openings between the base, diagonal segments and top segment, and wherein the base, diagonal segments and top segment are embedded in the new member.   
     
     
         8 . The structure of  claim 7 , wherein the base, diagonal segments and top segment protruded orthogonally from a surface of the existing member to which the base is attached. 
     
     
         9 . The structure of  claim 7 , further comprising reinforcing rods embedded in the new member, extending through the enclosed openings. 
     
     
         10 . The structure of  claim 7 , wherein the base and top segment are parallel to each other, and the diagonal segments extend at an oblique angle between the base and top segment. 
     
     
         11 . The structure of  claim 10 , wherein first and second diagonal segments extend between the base and top segment at opposite angles 
     
     
         12 . The structure of  claim 7 , further comprising a connective interface for connecting the base to the existing member. 
     
     
         13 . The structure of  claim 7 , wherein the top section and diagonal segments have the same thickness. 
     
     
         14 . The structure of  claim 7 , wherein the top section and diagonal segments have different thicknesses. 
     
     
         15 . A structure for reinforcing a first concrete slab with a second concrete slab, comprising:
 a base affixed to the first concrete slab;   diagonal segments extending from the base; and   a top segment connected to each of the diagonal segments, the diagonal segments spaced from each other to define one or more enclosed openings between the base, diagonal segments and top segment, and wherein the base, diagonal segments and top segment are embedded in the second concrete slab.   
     
     
         16 . The structure of  claim 15 , wherein the base, diagonal segments and top segment protruded orthogonally from a surface of the first concrete slab to which the base is attached. 
     
     
         17 . The structure of  claim 15 , further comprising reinforcing rods embedded in the second concrete slab, extending through the enclosed openings. 
     
     
         18 . The structure of  claim 15 , wherein the base and top segment are parallel to each other, and the diagonal segments extend at an oblique angle between the base and top segment. 
     
     
         19 . The structure of  claim 18 , wherein first and second diagonal segments extend between the base and top segment at opposite angles 
     
     
         20 . The structure of  claim 15 , further comprising a connective interface for connecting the base to the first concrete slab.