Temporary bridge having a software girder and method of constructing the temporary bridge

摘要

The present invention relates to a temporary structure and its construction method so that it is possible to reduce the amount of use and cost of steel materials of a girder used in temporary structures such as temporary bridges and bypass roads that work in a state where the load of a working device such as a crane is unbalanced. As related to this, since the crane moving in the temporary structure for the construction, repair, and reinforcement of the bridge works in a state where the load is unbalanced in the direction of the bridge, the maximum bending moment (M) occurs on one side in the direction of the bridge of the temporary structure. The temporary structure is reinforced by installing a SW girder on one side of the concentrated bridge direction. At this time, the temporary structure installs girders at regular intervals to support the load in the lower part, and the SW girder is installed between the outermost main girder on one side where the load is concentrated and the adjacent main girder, but the distance between the outermost main girder and the SW girder (L1) ), the distance (L2) between the adjacent main girder and the SW girder is provided with a SW girder that is not equal, and one side support wheel 22 on which the load of the crane 20 is biased is the SW girder 300 and the adjacent main girder 100) is a technical field related to a temporary structure having a SW girder located between them and a construction method of the temporary structure.