Construction method of steel composition girder bridge

A construction method of a steel composite girder bridge, the method comprising:

• installing steel girders on piers and forming shearing connectors continuously on the steel girders at intervals of a predetermined distance;
• installing stagings and a first form for casting deck concrete in the steel girders;
• installing non-composite members in an upper flange of the steel girders to form each non-composite section of supporting points and installing a second form around each of the shearing connectors, wherein the second form forms a shearing pocket;
• arranging sheath pipes in the supporting points and forming supporting point decks by casting and curing concrete;
• applying pre-stress to each section of the supporting point decks through the sheath pipes and performing a grouting process;
• forming span decks adjacent to the supporting point decks by casting and curing concrete in each span between the piers;
• filling the shearing pockets with non-shrinkage mortar;
• and
• forming a road after dismantling the stagings and the first and second forms, and forming protection walls.