Reinforcing bar anchorage

Abstract

A reinforcing bar anchorage 1 in accordance with the present invention includes a sleeve 2 having an ellipsoidal cross-sectional shape, an anchoring member 3 , and a wedge member 6 . The anchoring member 3 includes a steel plate 5 having a substantially circular plate-like body and a connection rod 4 provided upright on the steel plate. The connection rod 4 is formed from a straight steel rod having a circular cross-section. The sleeve 2 is configured such that the connection rod 4 and the reinforcing bar 11 can be inserted thereinto while the connection rod 4 and the reinforcing bar 11 can be parallel to each other so as to overlap each other by a predetermined length. Wedge insertion holes 9, 9 are formed in the sleeve 2 between the reinforcing bar 11 and the connection rod 4 so as to be opposed to each other. A wedge member 6 is designed to be inserted into the wedge insertion holes 9, 9 for press-fitting.

1 . A reinforcing bar anchorage comprising:
 an anchoring member including an anchoring portion and a connection rod extending from said anchoring portion;   a sleeve which has an elliptical cross-sectional shape and allows said connection rod and a reinforcing bar to be connected to said connection rod to be inserted thereinto such that the connection rod and the reinforcing bar are arranged so as to overlap each other by a predetermined length, the sleeve having wall portions including a pair of opposing flat wall portions; and   a wedge member which is to be inserted into wedge insertion holes formed in the respective opposing flat wall portions of said sleeve, and which is to be press-fitted between said connection rod and said reinforcing bar.   
   
   
       2 . The reinforcing bar anchorage according to  claim 1 , wherein said anchoring portion is formed as a plate-like body, and a reinforcing bar insertion opening for allowing said reinforcing bar to pass therethrough is formed in said plate-like body. 
   
   
       3 . The reinforcing bar anchorage according to  claim 1 , wherein said anchoring portion is formed as an annular-shaped body, and said reinforcing bar is allowed to pass through a space surrounded by said annular-shaped body. 
   
   
       4 . The reinforcing bar anchorage according to  claim 1 , wherein: said connection rod includes two connection rod bodies parallel to each other; said sleeve is configured to allow said reinforcing bar and said two connection rod bodies to be inserted thereinto with said reinforcing bar sandwiched between said two connection rod bodies; and two pairs of said wedge insertion holes are provided at respective positions each of which is located between said reinforcing bar and one of said connection rod bodies and which are substantially symmetric with respect to an axis of said reinforcing bar. 
   
   
       5 . A reinforcing bar anchorage comprising:
 an anchoring member including a sleeve having an ellipsoidal cross-sectional shape, said anchoring member having wall portions including a pair of opposing flat wall portions;   an anchoring member-securing rod which is to be inserted, together with a reinforcing bar to which said anchoring member is to be secured, into said anchoring member such that the anchoring member-securing rod and the reinforcing bar are arranged so as to overlap each other by a predetermined length; and   a wedge member which is to be inserted into wedge insertion holes formed in the respective opposing flat wall portions of said anchoring member, and which is to be press-fitted between said anchoring member-securing rod and said reinforcing bar.   
   
   
       6 . The reinforcing bar anchorage according to  claim 5 , wherein a flange-like protrusion is provided on a periphery of said sleeve. 
   
   
       7 . The reinforcing bar anchorage according to  claim 5 , wherein: said anchoring member-securing rod includes two securing rod bodies; said anchoring member is configured to allow said reinforcing bar and said two securing rod bodies to be inserted thereinto with said reinforcing bar sandwiched between said two securing rod bodies; and two pairs of said wedge insertion holes are provided at respective positions each of which is located between said reinforcing bar and one of said securing rod bodies and which are substantially symmetric with respect to an axis of said reinforcing bar. 
   
   
       8 . A reinforcing bar anchorage comprising:
 an anchoring member including an anchoring portion and a series connection rod extending from said anchoring portion;   a sleeve having an ellipsoidal cross-sectional shape, said sleeve having wall portions including a pair of opposing flat wall portions;   an anchoring member-securing rod which is to be inserted into said sleeve together with said series connection rod and a reinforcing bar to which said anchoring member is to be secured, said anchoring member-securing rod being arranged to be disposed on one side of said series connection rod and said reinforcing bar with said series connection rod and said reinforcing bar aligned on a straight line; and   a wedge member which is to be inserted into wedge insertion holes formed in the respective opposing flat wall portions of said sleeve, and which is to be press-fitted between said anchoring member-securing rod and said series connection rod and between said anchoring member-securing rod and said reinforcing bar.   
   
   
       9 . The reinforcing bar anchorage according to  claim 8 , wherein said anchoring member-securing rod comprises two rods provided on both sides of said reinforcing bar and said series connection rod so as to sandwich said reinforcing bar and said series connection rod therebetween. 
   
   
       10 . The reinforcing bar anchorage according to  claim 8 , wherein said anchoring portion is formed as a plate-like body, and a rod insertion opening for allowing said anchoring member-securing rod to pass therethrough is formed in said plate-like body. 
   
   
       11 . The reinforcing bar anchorage according to  claim 9 , wherein said anchoring portion is formed as a plate-like body, and a rod insertion opening for allowing said anchoring member-securing rod to pass therethrough is formed in said plate-like body.