Composite concrete column and construction method using the same

Abstract

A composite concrete column comprising: upper and lower concrete column portions extending in the lengthwise direction and having an exposed portion between the upper and lower concrete column portions; and an H-beam connected between the upper and lower concrete column portions to be exposed at the exposed portion; and wherein the H-beam has a plurality of holes through which reinforcement bars for slab pass.

What is claimed is: 
     
         1 . A construction method comprising the following steps of:
 installing composite concrete columns including upper and lower concrete column portions extending in the lengthwise direction and having an exposed portion between the upper and lower concrete column portions, and an H-beam connected between the upper and lower concrete column portions to be exposed at the exposed portion and having first holes formed on the upper and lower portions of flanges and second holes formed on the upper and lower portions of a web;   connecting ends of crossbeams to the H-beam at the exposed portion of the composite concrete columns;   installing reinforcement bars for slab to pass through at least one of the first holes and the second holes of the H-beam along the crossbeam;   installing reinforcement bars for slab so that the ends of the reinforcement bars pass through at least one of the first holes and the second holes of the H-beam along the crossbeam to be fixed thereto;   installing molds on the composite concrete columns and the crossbeams; and   putting concrete on the molds and curing the same.   
     
     
         2 . The construction method according to  claim 1 , further comprising the steps of:
 fixing the ends of upper reinforcement bars and lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the upper and lower portions of the flanges respectively by a predetermined length, to be then fixed to the flanges;   installing upper reinforcement bars of the composite concrete crossbeam connected to the web of the H-beam to pass through the second holes formed on the upper portion of the web to extend lengthwise;   fixing the ends of lower reinforcement bars of one composite concrete crossbeam connected to the web to pass through the second holes formed on the lower portion of the web by a predetermined length to be then fixed to the web; and   bending the end of lower reinforcement bars of the other composite concrete crossbeam connected to the web not to interfere with the web.   
     
     
         3 . The construction method according to  claim 2 , wherein the ends of the upper reinforcement bars and the lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam are fixed to the flanges by welding or fixing members,
 and wherein the ends of the lower reinforcement bars of the one composite concrete crossbeam connected to the web are fixed to the web by welding or fixing members.   
     
     
         4 . The construction method according to  claim 1 , further comprising the steps of:
 fixing the ends of upper reinforcement bars and lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the upper and lower portions of the flanges respectively by a predetermined length, to be then fixed to the flanges;   installing upper reinforcement bars of the composite concrete crossbeam connected to the web of the H-beam to pass through the second holes formed on the upper portion of the web to extend lengthwise; and   bending the end of lower reinforcement bars of the composite concrete crossbeam connected to the web not to interfere with the web.   
     
     
         5 . The construction method according to  claim 4 , wherein the ends of the upper reinforcement bars and the lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam are fixed to the flanges by welding or fixing members. 
     
     
         6 . The construction method according to  claim 1 , further comprising the steps of:
 installing upper reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the upper portion of the flanges;   fixing the ends of lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the lower portion of the flanges by a predetermined length, to be then fixed to the flanges;   installing upper reinforcement bars of the composite concrete crossbeam connected to the web of the H-beam to pass through the second holes formed on the upper portion of the web to extend lengthwise;   fixing the ends of lower reinforcement bars of one composite concrete crossbeam connected to the web to pass through the second holes formed on the lower portion of the web by a predetermined length to be then fixed to the web; and   bending the end of lower reinforcement bars of the other composite concrete crossbeam connected to the web not to interfere with the web.   
     
     
         7 . The construction method according to  claim 6 , wherein the ends of the lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam are fixed to the flanges by welding or fixing members,
 and wherein the ends of the lower reinforcement bars of the one composite concrete crossbeam connected to the web are fixed to the web by welding or fixing members.   
     
     
         8 . The construction method according to  claim 1 , further comprising the steps of:
 installing upper reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the upper portion of the flanges;   fixing the ends of lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam to pass through the first holes formed on the lower portion of the flanges by a predetermined length, to be then fixed to the flanges;   installing upper reinforcement bars of the composite concrete crossbeam connected to the web of the H-beam to pass through the second holes formed on the upper portion of the web to extend lengthwise;   bending the ends of lower reinforcement bars of one composite concrete crossbeam connected to the web not to interfere with the web.   
     
     
         9 . The construction method according to  claim 8 , wherein the ends of the lower reinforcement bars of the composite concrete crossbeams connected to the flanges of the H-beam are fixed to the flanges by welding or fixing members.