| 摘要 |
The present invention relates to a footbridge with improved constructability and safety. More specifically, the footbridge comprises: a supporting structure which includes main girders coupled to an outer part of a concrete structure on a bridge and a slope by anchor bolts at regular intervals, sub-girders installed on upper surfaces of the main girders, a rail formed in a longitudinal direction of the bridge, and auxiliary supports installed on a lower surface part between the sub-girders on both sides to improve stability and walkability of a floor plate; a support reinforcing structure which includes a plurality of square pipes installed on upper surfaces of the sub-girders in the longitudinal direction of the bridge at regular intervals, protection handrails connectively installed on outer edge parts of the sub-girders, and a reinforcing strut unit installed on a side surface of the concrete structure and a lower end surface of the sub-girder with a slope so as to prevent deflection of a structure by absorbing impact; a floor part which includes floor plates installed on top surfaces of the square pipes to enable pedestrians or bicycles to come and go, and fixing clips to be fixed to grooves of both sides of the floor plates; and a frame whose upper part is curved toward the bridge with certain curvature, and which is installed on another end of the sub-girder. In this regard, the footbridge further comprises an alarm system for restricting deflection, which is installed on a lower surface of the bottom plate to further strengthen safety. |
