Structural member with core bar

Abstract

A structural member with a core bar which reduces manufacturing costs, enables easy construction of various curved building structures such as a dome-shaped building structure or an arch-shaped building structure without a truss structure or a formwork. The structural member includes: at least one elastic core bar formed in a bar shape; and an outer body or an outer cover into which the at least one core bar is inserted. The core bar is formed at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material. The outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.

What is claimed is: 
     
         1 . A structural member comprising:
 at least one elastic core bar formed in a bar shape; and   an outer body or an outer cover into which the at least one core bar is inserted,   wherein the core bar is formed of at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material, and   wherein the outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.   
     
     
         2 . The structural member of  claim 1 , wherein the core bar is formed as a composite bamboo bar, and
 wherein the composite bamboo bar is formed by bonding a plurality of bamboo strips into a single body or pressure-molding bamboo which has been split and then crushed.   
     
     
         3 . The structural member of  claim 1 , wherein the outer body or the outer cover is provided with an insertion hole into which the core bar inserted to be supported, and is formed in a pipe type or a profile type having at least one T-slot. 
     
     
         4 . The structural member of  claim 1 , wherein the outer body is formed in a guide pile type which includes a main body into which the core bar is inserted and an accessory portion provided on the main body, and
 wherein the accessory portion includes at least one guide wing and/or at least one T-slot which are formed to continuously extend in a longitudinal direction on at least one outer surface of the main body.   
     
     
         5 . The structural member of  claim 4 , wherein the accessory portion is provided on each of two parallel surfaces of the main body and includes a T-slot, first and second guide wings positioned at opposite sides with reference to the T-slot, an end of an insulation material being inserted between the first and second guide wings, and a third guide wing positioned to be spaced apart from the second guide wing and to form an air layer between the second guide wing and the third guide wing, and
 wherein the first guide wing and the third guide wing are formed on outer edges such that an exterior material or an interior material of a building wall may be fixed thereto.   
     
     
         6 . The structural member of  claim 1 , wherein the outer body is formed with at least one protrusion and/or at least one rib, which extend in a longitudinal direction, on an inner wall of the insertion hole into which the core bar is inserted to be supported so as to allow the core bar to be easily inserted and held. 
     
     
         7 . The structural member of  claim 1 , wherein the outer body or outer cover is fastened to the core bar by at least one anchoring unit. 
     
     
         8 . The structural member of  claim 1 , wherein the outer body or the outer cover is formed with at least one partition wall which divides an internal space. 
     
     
         9 . A structural member comprising:
 An elastic core bar formed in a bar shape; and   an outer cover or a coating film formed on an outer surface of the at least one core bar,   wherein the core bar is formed at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material, and   wherein the outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.   
     
     
         10 . The structural member of  claim 9 , wherein the outer cover or the coating film is formed through any one of a method of passing the core par through a molten liquid of a predetermined material and curing the molten liquid, a coating method, a method of fusing a tubular covering material, and a wrapping method. 
     
     
         11 . A tubular structure comprising:
 a center core bar arranged centrally and positioned in a longitudinal direction;   a plurality of core bars arranged around the center core bar and formed in an elastic bar shape; and   an outer body or an outer cover into which the center core bar and the plurality of core bars,   wherein the center core is formed of at least one of a metallic material, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material,   wherein the plurality of core bars are formed of at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material, and   wherein the outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.