Concrete Filled Steel Tubular Arch Bridge Cable Hoisting Construction Of Pre-camber Setting Research

The large-span CFST arch bridge is widely applied due to its elegant appearance and economical span with the rapid developmen of bridge construction in our country in resent years. Its camber of construction has great affection at construction safety, the final bridge line-type and use safety along with longer span. The criterions of roads and bridges haven't set down any of CFST arch bridge now; its designs are more consulted the criterions of bridges design or the criterions of others' industries. So this paper sets up actual bridge model by MIDAS, studies the camber of construction of CFST arch bridge hereinafter.1: Study some construction methods and construction controlling technology, go deep into the cable erection method for its widely used in the constructions of CFST arch bridge.2: Study some affecting factors of arch axis in its constructing and using of CFST arch bridge, and find out the primary factors.3: Passing set up actual bridge model of CFST arch bridge, calculates vertical displacement of the arch rib by the infecting of the primary factors, and compasses the numerical values and their proportions occupied in the sum, and gets the effecting degrees of the factors.4: Aim at that the arch rib of CFST arch bridge occurs error when folded, and its arch metamorphoses by the affection of many factors, putting forward that it is needed to account the length of the arch rib.5: Analyze the countermarching analysis and the advancing analysis in cable hoisting method of the arch rib of CFST arch bridge, and apply the advancing analysis in the CFST arch bridge, to validate the correctness of the initialization of vertical displacement.