Grouted rebar dowel splice

Abstract

Disclosed herein is a grouted rebar dowel splice by which first and second rebars to be embedded within adjacent concrete sections are coupled to one another to hold the concrete sections together and resist tension and compression forces that are typically encountered during an earthquake. The rebar splice includes a hollow cylindrical splice body. One end of the hollow splice body is flattened, and a reinforcing sleeve is pressed into surrounding engagement with the flattened first end. The first rebar is received through axially aligned holes formed in the flattened first end and the reinforcing sleeve. A coiled compression spring is engulfed by a solidifier (e.g., an epoxy or a grout) at the hollow interior of the splice body. The second rebar is received through an opening at the opposite end of the splice body to be surrounded by and coaxially aligned with the coiled compression spring. The hole through the flattened first end of the splice body has a longitudinal axis which is perpendicularly aligned with the longitudinal axis of the opening at the first end of the splice body such that the first and second rebars extend in different directions.

1 . A rebar splice for coupling a first rebar to be embedded within a first section of concrete to a second rebar to be embedded within a second section of concrete, said rebar splice including a splice body and said splice body having first and opposite ends with respective openings formed therethrough for receiving said first and second rebars, said first and second openings having longitudinal axes that are aligned perpendicular relative to one another.  
   
   
       2 . The rebar splice recited in  claim 1 , wherein said splice body has a hollow interior and the first end of said splice body is flattened, the first opening being formed in said flattened first end to receive the first rebar therethrough.  
   
   
       3 . The rebar splice recited in  claim 2 , also including a sleeve surrounding the flattened first end of said splice body and having an opening formed therethrough, the openings formed through said sleeve and said flattened first end being axially aligned to receive the first rebar therethrough.  
   
   
       4 . The rebar splice recited in  claim 2 , wherein the second rebar is received at the hollow interior of said splice body.  
   
   
       5 . The rebar splice recited in  claim 4 , also including a compression spring located at the hollow interior of said splice body.  
   
   
       6 . The rebar splice recited in  claim 5 , wherein said compression spring is a coiled wire surrounding the second rebar at the interior of said hollow splice body, such that said coiled wire and the second rebar are arranged in spaced coaxial alignment.  
   
   
       7 . The rebar splice recited in  claim 6 , wherein the hollow interior of said splice body is filled with a solidifier, said compression spring and the second rebar being surrounded by said solidifier and encased therewithin when said solidifier hardens.  
   
   
       8 . The rebar splice recited in  claim 7 , wherein said solidifier is an epoxy.  
   
   
       9 . The rebar splice recited in  claim 7 , wherein said solidifier is a grout.  
   
   
       10 . The rebar splice recited in  claim 7 , also including a plate extending across the opposite end of said splice body and having an opening formed therethrough to communicate with the hollow interior of said splice body, the second rebar being received at the hollow interior of said splice body by way of the opening through said plate.  
   
   
       11 . The rebar splice recited in  claim 10 , wherein said plate extending across the opposite end of said splice body has a set of holes formed therein for receip therethrough of respective fasteners.  
   
   
       12 . The rebar splice recited in  claim 1 , wherein said splice body is a hollow cylinder that is manufactured from steel.  
   
   
       13 . A rebar splice for coupling a first rebar to be embedded within a first section of concrete to a second rebar to be embedded within a second section of concrete, said rebar splice including a cylindrical splice body having first and opposite ends and a hollow interior, the first end of said splice body being flattened and having an opening formed therethrough, said rebar splice also including a reinforcing sleeve surrounding said flattened first end and having an opening formed therethrough which is axially aligned with the opening formed through said flattened first end so as to receive the first rebar, and the opposite end of said splice body having an opening through which the second rebar extends for receipt at the hollow interior of said splice body, such that the first and second rebars extend in different directions through the respective openings formed in said first and opposite ends of said splice body.  
   
   
       14 . The rebar splice recited in  claim 13 , also including a shear pin extending through each of the first flattened end of said splice body and the reinforcing sleeve to retain said reinforcing sleeve in surrounding engagement with said first end.  
   
   
       15 . The rebar splice recited in  claim 13 , also including a coiled wire surrounding the second rebar at the hollow interior of said splice body, said hollow interior being filled with a solidifier such that said coiled wire and the second rebar are surrounded by said solidifier and encased therewithin when said solidifier hardens.