Rigid connection structure between upper precast concrete column and lower precast concrete column and rigid connection structure of precast concrete beam using the same

Abstract

Provided is a rigid connection structure including: a lower PC column having column concrete, a lower column plate disposed on top of the column concrete, and a plurality of lower column reinforcing bars buriedly arranged vertically in the interior of the column concrete and having upper ends penetrated into the lower column plate in such a manner as to be exposed to the outside; and an upper PC column having column concrete, an upper column plate disposed on top of the column concrete, and a plurality of upper column reinforcing bars buriedly arranged vertically in the interior of the column concrete and having lower ends penetrated into the upper column plate in such a manner as to be exposed to the outside.

1 . A rigid connection structure between an upper precast concrete column and a lower precast concrete column, comprising:
 a lower column plate disposed on an end of the lower precast concrete column,   a plurality of lower column reinforcing bars in an interior of the lower precast concrete column and having ends penetrating through the lower column plate to be outside of the lower precast concrete column;   an upper column plate disposed on an end of the upper precast concrete column,   a plurality of upper column reinforcing bars in an interior of the upper precast concrete column and having ends penetrating through the upper column plate to be outside of the upper precast concrete column, and   a box out comprising ends of the upper column reinforcing bars and in which the upper precast concrete column does not contact the upper column plate and the upper column reinforcing bars and the lower column reinforcing bars are connected to each other.   
     
     
         2 . The rigid connection structure according to  claim 1 , wherein the ends of the upper column reinforcing bars are coupled to upper ends of one touch couplers, and the ends of the lower column reinforcing bars are coupled to lower ends of the one touch couplers, so that the upper column reinforcing bars and the lower column reinforcing bars are connected to each other. 
     
     
         3 . The rigid connection structure according to  claim 2 , further comprising support chips between the lower column plate and an underside of the upper column plate. 
     
     
         4 . A rigid connection structure of a precast concrete beam, comprising:
 the rigid connection structure between the upper precast concrete column and the lower precast concrete column as defined in  claim 1 ;   a beam plate disposed on a side of the precast concrete beam;   a plurality of beam reinforcing bars in an interior of the precast concrete beam and each having one end connected to the beam plate;   beam upper reinforcing bars arranged horizontally above the precast concrete beam; and   slab concrete on the beam upper reinforcing bars, the beam upper reinforcing bars being buried in the slab concrete,   wherein the beam plate is coupled to a side of the lower precast concrete column, each beam upper reinforcing bar passes through the box out, and one end of each beam upper reinforcing bar is coupled to a side of the upper precast concrete column.   
     
     
         5 . The rigid connection structure according to  claim 1 , wherein the lower column plate has a protruding portion extending from a side surface of the lower column plate and the upper column plate has a protruding portion extending from a side surface of the upper column plate, and the protruding portion of the lower column plate is coupled to the protruding portion of the upper column plate by means of bolts and nuts. 
     
     
         6 . The rigid connection structure according to  claim 1 , wherein the lower column plate has internal bolts protruding from a top of the lower column plate, the internal bolts penetrate through the upper column plate, and the internal bolts are fastened in the box out. 
     
     
         7 . A rigid connection structure between an upper precast concrete column and a lower precast concrete column, comprising:
 a lower column plate disposed on an end of the lower precast concrete column,   a plurality of lower column reinforcing bars in an interior of the lower precast concrete column and having ends penetrating through the lower column to be outside of the lower precast concrete column;   an upper column plate disposed on an end of the upper precast concrete column,   a plurality of upper column reinforcing bars in an interior of the upper precast concrete column and having ends penetrating through the upper column plate to be outside of the upper precast concrete column, and   a box out comprising ends of the upper column reinforcing bars,   wherein sides of the upper column plate are shorter than sides of the lower column plate, the upper column plate and the lower column plate are coupled to each other by means of internal bolts, and the upper column reinforcing bars and the lower column reinforcing bars are connected to each other in the box out.   
     
     
         8 . The rigid connection structure according to  claim 7 , wherein the ends of the upper column reinforcing bars are coupled to upper ends of one touch couplers, and the ends of the lower column reinforcing bars are coupled to lower ends of the one touch couplers, so that the upper column reinforcing bars and the lower column reinforcing bars are connected to each other. 
     
     
         9 . The rigid connection structure according to  claim 7 , further comprising support chips between the lower column plate and an underside of the upper column plate.