THE COMPOSITE GIRDER WITH VARIOUS PATTERN AS WEB MEMBERS

The present invention relates to the development of a composite girder which comprises web members made of steel, a concrete lower chord member, and a concrete upper bottom plate. In an existing composite truss girder having the concrete lower chord member, the problems of the generation of a large...

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description The present invention relates to the development of a composite girder which comprises web members made of steel, a concrete lower chord member, and a concrete upper bottom plate. In an existing composite truss girder having the concrete lower chord member, the problems of the generation of a large local sectional force inside a node section and partition installation in a central point exist, wherein the generation of the sectional force inside the node section is due to the use of a rigid joint node. The purpose of the present invention is to develop a composite girder bridge in which the web members have various patterns instead of an existing triangular truss structure, and the structural type of a main girder is converted from the truss structure into a beam structure according to a main construction step, wherein the patterns are capable of smoothly transmitting forces between members. The composite girder according to the present invention for the purpose comprises: a framework made of the steel and performing a structural behavior similar to the structural behavior of a truss; the concrete lower chord member totally surrounding the lower steel of the framework; a concrete web member filled in the part of the web space of the framework; and a concrete bottom plate coupled to the upper chord member of the framework. The composite girder according to the present invention has advantageous properties properly utilized according to the constructional conditions and constructional steps, wherein the advantageous properties are from the truss structure, the beam structure, the steel, and concrete.
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In an existing composite truss girder having the concrete lower chord member, the problems of the generation of a large local sectional force inside a node section and partition installation in a central point exist, wherein the generation of the sectional force inside the node section is due to the use of a rigid joint node. The purpose of the present invention is to develop a composite girder bridge in which the web members have various patterns instead of an existing triangular truss structure, and the structural type of a main girder is converted from the truss structure into a beam structure according to a main construction step, wherein the patterns are capable of smoothly transmitting forces between members. The composite girder according to the present invention for the purpose comprises: a framework made of the steel and performing a structural behavior similar to the structural behavior of a truss; the concrete lower chord member totally surrounding the lower steel of the framework; a concrete web member filled in the part of the web space of the framework; and a concrete bottom plate coupled to the upper chord member of the framework. 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subjects ASSEMBLY OF BRIDGES
CONSTRUCTION OF BRIDGES
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
FIXED CONSTRUCTIONS
OR VIADUCTS
title THE COMPOSITE GIRDER WITH VARIOUS PATTERN AS WEB MEMBERS
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