Modular steel bridge

Abstract

A modular steel bridge is configured by combining at least two steel girder segments, and it includes a bearing block installed to be connected to an upper flange of a connection end of each steel girder segment and a web, and a hinge assembly installed to be attachable to the lower flange of each connection end and hinge-connecting the connection ends.

1 . A modular steel bridge configured by connecting at least two steel girder segments, comprising:
 a bearing block installed to be connected to an upper flange of a connection end of each steel girder segment and a web; and   a hinge assembly, installed to be attachable to a lower flange of the connection end, for hinge-combining the connection end.   
   
   
       2 . The modular steel bridge of  claim 1 , wherein
 the hinge assembly includes:   a connecting plate installed to be connected to the lower flange of the connection end by using bolts and nuts; and   a combining member fixedly installed at the connecting plate and complementarily hinge-combined by a hinge pivot.   
   
   
       3 . The modular steel bridge of  claim 2 , wherein
 the lower flange of the connection end and the connecting plate are formed with a plurality of bolt holes.   
   
   
       4 . The modular steel bridge of  claim 2 , wherein
 the combining member includes:   a first hinge plate being fixedly installed at one connecting plate and having a pair of combining holes to which the hinge pivot is combined; and   a second hinge plate being fixedly installed at another connecting plate, having a combining hole to which the hinge pivot is combined, and being combined with the first hinge plate in a concavo-convex manner.   
   
   
       5 . The modular steel bridge of  claim 2 , wherein
 the hinge pivot is formed with pin holes into which hinge pins are inserted at each end thereof.   
   
   
       6 . The modular steel bridge of  claim 2 , wherein
 the connecting plate is installed to be connected to the bottom part of the lower flange, and the combining member is installed to be fixed to the bottom part of the connecting plate.   
   
   
       7 . A modular steel bridge configured by connecting at least two steel girder segments, comprising:
 a bearing block installed at a connection end of each steel girder segment;   a hinge assembly installed at the connection end; and   a reinforcing unit being installed to be connected to each connection end and dividing the tensile force applied to the hinge assembly.   
   
   
       8 . The modular steel bridge of  claim 7 , wherein
 the bottom part of the web of the connection end is cut to a predetermined height, and the hinge assembly is installed to be fixed at the cutting part of the web and the top part of the lower flange.   
   
   
       9 . The modular steel bridge of  claim 8 , wherein
 the hinge assembly includes:   a first hinge plate installed to be fixed at the cutting part of the web of the connection end of one steel girder segment and the top part of the lower flange, and having a pair of combining holes to which a hinge pivot is combined; and   a second hinge plate installed to be fixed at the cutting part of the web of the connection end of another steel girder segment and the top part of the lower flange, having a combining hole to which the hinge pivot is combined, and being combined with the first hinge plate in a concavo-convex manner.   
   
   
       10 . The modular steel bridge of  claim 9 , wherein
 the hinge pivot is formed with pin holes into which hinge pins are inserted at each end.   
   
   
       11 . The modular steel bridge of  claim 9 , wherein
 the first hinge plate and the second hinge plate include a combining unit to which the hinge pivot is combined.   
   
   
       12 . The modular steel bridge of  claim 11 , wherein
 the combining unit protrudes outside the connection end and is extended between the lower flanges.   
   
   
       13 . The modular steel bridge of  claim 7 , wherein:
 the reinforcing unit includes a steel rod installed to be connected to the lower flange of each connection end.   
   
   
       14 . The modular steel bridge of  claim 13 , wherein the reinforcing unit includes:
 a fixing member being installed at the lower flange of each connection end and supporting respective ends of the steel rod; and   a nut combined to each end of the steel rod.   
   
   
       15 . The modular steel bridge of  claim 7 , wherein
 the reinforcing unit includes a steel plate installed to be connected to the lower flange of each connection end.   
   
   
       16 . The modular steel bridge of  claim 15 , wherein
 the reinforcing unit includes a connecting member being installed at each lower flange and supporting the steel plate.   
   
   
       17 . The modular steel bridge of  claim 16 , wherein
 the steel plate is installed to be connected to each connecting member by using bolts and nuts.   
   
   
       18 . The modular steel bridge of  claim 16 , wherein
 the steel plate is installed to be welded and fixed to each connecting member.   
   
   
       19 . The modular steel bridge of  claim 7 , wherein
 the bearing block is fixedly installed to the upper flange of each connection end and web.   
   
   
       20 . The modular steel bridge of  claim 1 , wherein
 the connection ends of the steel girder segments are arranged with a gap therebetween, and the bearing blocks are installed to be contacted with each other.   
   
   
       21 . The modular steel bridge of  claim 1 , wherein
 the bearing blocks are installed to protrude into a gap space between the connection ends.   
   
   
       22 . The modular steel bridge of  claim 1 , wherein, regarding the steel girder segments,
 the upper flange of each connection end is cut to a predetermined length, and the top part of the web of each connection end is cut to a predetermined height.   
   
   
       23 . The modular steel bridge of  claim 1 , wherein
 each bearing block is formed to be thicker than the upper flange, and is welded and fixed at the cutting parts of the upper flange and the web.   
   
   
       24 . The modular steel bridge of  claim 1 , wherein the steel girder segment is an I-type girder. 
   
   
       25 . The modular steel bridge of  claim 1 , wherein the steel girder segment is a box girder. 
   
   
       26 . The modular steel bridge of  claim 1 , wherein the steel girder segment is a  -type girder.